Damage evaluation and measurement via correlation techniques
|
|
- Poppy Freeman
- 5 years ago
- Views:
Transcription
1 Damage evaluation and measurement via correlation techniques (Schadensbewertung und Messung mit Korrelationstechniken) François HILD & Eikology team
2 2 Damage / Fracture Challenges Need for reliable kinematic fields Robust and validated models Outline Evaluation of damage via DIC and DVC Design of discriminating experiments (e.g., concrete) Summary and perspectives
3 3 Damage / Fracture Challenges Need for reliable kinematic fields Robust and validated models Outline Evaluation of damage via DIC and DVC Design of discriminating experiments (e.g., concrete) Summary and perspectives
4 4 Digital Image Correlation Measurement of optical flow I0( x) I t ( x u( x)) Local approach u I ( x) I ( x u) 2 c 0 t ZOI ( I0 t 0 t u ZOI I )( u) I ( x) I ( x ) 2 Fluid mechanics : PIV [Barker et al., 1977 ; Grousson et al., 1977 ; Dudderar and Simpkins, 1977] Solid mechanics : DIC [Kanade et al., 1981 ; Burt et al., 1982 ; Sutton et al., 1983]
5 5 Local Approach u y (µm) Cloud of points
6 6 Standard Practice in Commercial Codes
7 7 Global Approach Measurement of optical flow I0( x) I t ( x u( x)) Global approach (FE bases*) u x N (x) m a i i ROI a I 0( x) ( x um( x)) 2 c I t i 2 *[Besnard et al., 2006, Exp. Mech. 46 pp ]
8 8 Local Approach u y (µm) Cloud of points
9 9 Global Approach u y (µm) Dense and continuous field [Leclerc et al., 2009, in LNCS 5496 pp ]
10 10 Mechanical Regularization Gray level conservation 2 a I ( x) ( x u ( x)) Internal equilibrium 2 EQ t t a a K K a Boundary regularization 2 t t a a L L 2 tot 0 m c I t EP a a a w a w a c ROI EQ EQ EP 2 EP [Réthoré et al., 2009, Europ. J. Comput. Mech. 18 pp ] [Tomičević et al., 2013, J. Strain Anal. 48 pp ]
11 11 New Length Scale(s) Choice: plane wave for v(x) = v 0 e ik x 2 c ( v) k EG ( v) k and EP ( v) k Weights w reg proportional to 4 reg 4 log(2 tot ) Regularization DVC Cross-over scale reg log( k )
12 12 Global Approach u y (µm) Dense and continuous field [Leclerc et al., 2009, in LNCS 5496 pp ]
13 13 Reguralized Approach (mechanical filter) u y (µm) Dense, continuous and filtered field
14 14 Cracks?
15 15 Reguralized Approach (w/ Crack) u y (µm) ( x) I0( x) ( x u ( x)) I t m
16 16 Reguralized Approach (w/ Crack) u y (µm) ( x) I0( x) ( x u ( x)) I t m
17 17 Mechanical Regularization w/ Damage Gray level conservation Internal equilibrium with 2 tot a I ( x) ( x u ( x)) m 2 c 0 I t ROI ~ ~ t a a K K a 2 EQ ~ [ K e ] [ K e ](1 D a a w a w a c EQ e t ) EQ D e D EP 2 1 exp EP e 1 0 m *[HF et al., 2015, Int. J. Fracture 191(1-2) pp ]
18 18 Reguralized Approach (w/ Crack) u y (µm)
19 19 Reguralized Approach w/ Damage u y (µm)
20 20 Reguralized Approach w/ Damage u y (µm)
21 21 Reguralized Approach w/ Damage 1
22 22 Cracks in 3D?
23 23 X-Ray Imaging 3 rd generation synchrotron facilities Lab tomograph
24 24 X-Ray Computed Tomography X-Ray tube Sample Detector Rotating stage Radiographs 3D rendering after 1000 projections reconstruction
25 25 Digital Volume Correlation Local approach* I I )( u) I ( x) I ( x ) ( 0 t 0 t u ZOI Global approach** a I 0( x) ( x um( x)) 2 c I t ROI Regularized approach*** 2 tot a a w a w a c EQ EQ EP EP 2 ***[Bay et al., 1999, Exp. Mech. 39(3) pp ] ***[Roux et al., 2008 Compos. Part A 39(8) ] ***[Leclerc et al., 2011, Exp. Mech. 51(4) pp ]
26 26 3-Point Flexural Test on Plaster 1 voxel 25 µm
27 27 3-Point Flexural Test on Plaster Crack visualization?
28 28 3-Point Flexural Test on Plaster Maximum principal strains? Elastic strains?
29 30 Quantified Cracking 8voxels m b 60 voxels
30 31 Quantified Cracking 8voxels m b 60 voxels
31 34 Quantified Cracking 8voxels m 4 b 60 voxels w/ damage
32 36 Multiple Cracking? 1 voxel 50 µm l = 12 voxels l m = l b = 30 voxels [Bouterf, 2014, PhD thesis, ENS Cachan]
33 37 Multiple Cracking 1 voxel 50 µm l = 12 voxels l m = l b = 30 voxels COD (voxel) [Bouterf, 2014, PhD thesis, ENS Cachan]
34 38 Interim Summary 2D & 3D imaging: very powerful (qualitative) tool! DIC and DVC: quantitative tools Damage quantification in brittle materials
35 39 3D imaging: big data 4D extensions DVC: Outlook big and fast calculations multiscale analyses robust when localization or damage set in Quantitative assessments of damage Model identification and validation
36 40 Smart Testing with DIC Loaded sample or structure Measurement Quantity of interest: Displacement, crack tip, SIF Experiment Boundary conditions Model Hexapod kinematics Crack path: manual control (interactive procedure) real time (hybrid procedure)
37 41 Hexapod
38 42 YES NO convergence DIC-Controlled Hexapod DOF com L V computation PID L Veq 20Hz I-DIC GPUs Cam(1) solver Cam(i) Cam(n) [Le Flohic et al., 2014, Exp. Mech. 54(5) ]
39 43 DIC All Over The Place U shaped BC RBM Plates z y x
40 D Simulations Driven by Measured BCs [Carpiuc et al., 2017, Cem. Concr. Res. 100 pp ]
41 45 P (kn) P s (kn) Macroscopic Validation? Longitudinal Response Transverse Response d (mm) Experimental test Damage model d s (mm) Experimental test Damage model
42 46 Nonlocal Damage Model
43 47 Cracking Pattern Back Face Front Face Couloir
44 U [mm] R [rad] Interactive Test X comm X LVDT Y comm Y LVDT Y DIC Loading steps: Time [s] x x Z comm Z LVDT Z DIC Rx comm Rx LVDT 0. Elastic load-unload 1. Rotation & shear + 2. Shear 3. Rotation 4. Shear + 5. Rotation 6. Shear 7. Traction z y Rx DIC Ry comm z y Ry LVDT Rz comm 5 Rz LVDT Time [s] x 10 4 [Carpiuc et al., 2017, Eng. Fract. Mech. 176 pp. 1-22] z y 3
45 49 Fy [kn] Shear force [kn] Rotation + Shear Time [s] x 10 4
46 50 Fy [kn] Shear force [kn] Shear Time [s] x 10 4
47 51 Fy [kn] Shear force [kn] Rotation Time [s] x 10 4
48 52 Fy [kn] Shear force [kn] Shear Time [s] x 10 4
49 53 Fy [kn] Shear force [kn] Rotation Time [s] x 10 4
50 54 Fy [kn] Shear force [kn] Shear Time [s] x 10 4
51 55 Shear Fy force [kn] [kn] Tension Time [s] x 10 4
52 56 Hybrid Test Control - LEFM u z u x Desired crack path K I /K II u z =1 u y =1 Geometry update Bifurcation angle Crack tip Sensitivity matrix Inverse problem U Z /U Y Williams fields Measurement Mechanical loading
53 57 Hybrid Test
54 58 Virtual Hybrid Test* *[Jailin et al., 2017, J. Mech. Phys. Solids 102 pp ]
55 59 Virtual Hybrid Test
56 60 Hybrid Test z y U Z [px] IDIC 0.55 [px] Crack tip detection IDIC: Williams [1957] fields (LEFM) [Roux et al., 2006] for straight cracks [Réthoré, 2015] for curved cracks [Carpiuc, 2015, PhD thesis ENS Cachan]
57 61 Hybrid Test U Z [px]
58 62 Hybrid Test
59 63 Summary Evaluation of damage in brittle materials via DIC and DVC Design of discriminating experiments (e.g., concrete) DIC benchmark DIC-driven tests optimized tests
60 64 Vielen Dank für Ihre Aufmerksamkeit!
Tomographic reconstruction: the challenge of dark information. S. Roux
Tomographic reconstruction: the challenge of dark information S. Roux Meeting on Tomography and Applications, Politecnico di Milano, 20-22 April, 2015 Tomography A mature technique, providing an outstanding
More information"Drawing with a crack in concrete": a hybrid test to control mixed-mode crack propagation
"Drawing with a crack in concrete": a hybrid test to control mixed-mode crack propagation Résumé: A. Carpiuc a-b, L. Zheng a, K. Kazymyrenko a, H. Leclerc b, M. Poncelet b, F. Hild b, M. Bottoni a a. Laboratoire
More informationSimulation of Discrete-source Damage Growth in Aircraft Structures: A 3D Finite Element Modeling Approach
Simulation of Discrete-source Damage Growth in Aircraft Structures: A 3D Finite Element Modeling Approach A.D. Spear 1, J.D. Hochhalter 1, A.R. Ingraffea 1, E.H. Glaessgen 2 1 Cornell Fracture Group, Cornell
More informationAdvanced Image Reconstruction Methods for Photoacoustic Tomography
Advanced Image Reconstruction Methods for Photoacoustic Tomography Mark A. Anastasio, Kun Wang, and Robert Schoonover Department of Biomedical Engineering Washington University in St. Louis 1 Outline Photoacoustic/thermoacoustic
More informationReinforced concrete beam under static load: simulation of an experimental test
Reinforced concrete beam under static load: simulation of an experimental test analys: nonlin physic. constr: suppor. elemen: bar cl12i cl3cm compos cq16m interf pstres reinfo struct. load: deform weight.
More informationDeformation of granular texture media studied by X-ray CT & 3D DIC at the continuous and microstructure scales
Deformation of granular texture media studied by X-ray CT & 3D DIC at the continuous and microstructure scales N. Lenoir, S.A. Hall, J. Desrues, G. Viggiani and P. Bésuelle (Laboratoire 3S-R) Michel Bornert
More informationCode_Aster Titre : SSNP168 - Endommagement d'éprouvettes béton de typ[...] Responsable : KAZYMYRENKO Cyril
Titre SSNP168 - Endommagement d'éprouvettes béton de typ[...] Responsable KAZYMYRENKO Cyril Date 13/10/2016 Page 1/28 Clé V6.03.168 SSNP168 - Damage of test-tubes concrete of the type Nooru-Mohamed Summary
More informationAccepted Manuscript. I. Eshraghi, M.R. Yadegari Dehnavi, N. Soltani
Accepted Manuscript Effect of Subset Parameters Selection on the Estimation of Mode-I Stress Intensity Factor in a Cracked PMMA Specimen using Digital Image Correlation I. Eshraghi, M.R. Yadegari Dehnavi,
More informationScientific Manual FEM-Design 17.0
Scientific Manual FEM-Design 17. 1.4.6 Calculations considering diaphragms All of the available calculation in FEM-Design can be performed with diaphragms or without diaphragms if the diaphragms were defined
More informationFailure of Notched Laminates Under Out-of- Plane Bending. Phase VI Technical Review John Parmigiani Oregon State University
Failure of Notched Laminates Under Out-of- Plane Bending. Phase VI 2013 Technical Review John Parmigiani Oregon State University Failure of Notched Laminates Under Out-of-Plane Bending, all phases Motivation
More informationTutorial 1: Welded Frame - Problem Description
Tutorial 1: Welded Frame - Problem Description Introduction In this first tutorial, we will analyse a simple frame: firstly as a welded frame, and secondly as a pin jointed truss. In each case, we will
More informationModeling Strategies for Dynamic Finite Element Cask Analyses
Session A Package Analysis: Structural Analysis - Modeling Modeling Strategies for Dynamic Finite Element Cask Analyses Uwe Zencker, Günter Wieser, Linan Qiao, Christian Protz BAM Federal Institute for
More informationVCUPDATE, A NUMERICAL TOOL FOR FINITE ELEMENT MODEL UPDATING
VCUPDATE, A NUMERICAL TOOL FOR FINITE ELEMENT MODEL UPDATING Andrea Mordini VCE Vienna Consulting Engineers, Helmut Wenzel VCE Vienna Consulting Engineers, Austria Austria mordini@vce.at Abstract Due to
More informationModeling Skills Stress Analysis J.E. Akin, Rice University, Mech 417
Introduction Modeling Skills Stress Analysis J.E. Akin, Rice University, Mech 417 Most finite element analysis tasks involve utilizing commercial software, for which you do not have the source code. Thus,
More informationTHREE-DIMENSIONAL MAPPING OF FATIGUE CRACK POSITION VIA A NOVEL X-RAY PHASE CONTRAST APPROACH
Copyright JCPDS - International Centre for Diffraction Data 2003, Advances in X-ray Analysis, Volume 46. 314 THREE-DIMENSIONAL MAPPING OF FATIGUE CRACK POSITION VIA A NOVEL X-RAY PHASE CONTRAST APPROACH
More informationDeeply Virtual Compton Scattering at Jefferson Lab
Deeply Virtual Compton Scattering at Jefferson Lab June 16-17, 2016 Frederic Georges (PhD student) PhD Supervisor: Carlos Muñoz Camacho Institut de Physique Nucléaire d Orsay CNRS-IN2P3 Université Paris-Sud,
More informationDigital Volume Correlation for Materials Characterization
19 th World Conference on Non-Destructive Testing 2016 Digital Volume Correlation for Materials Characterization Enrico QUINTANA, Phillip REU, Edward JIMENEZ, Kyle THOMPSON, Sharlotte KRAMER Sandia National
More information2D Digital Image Correlation in strain analysis by Edge Detection And its Optimisation
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP) Volume 4, Issue 2, Ver. III (Mar-Apr. 214), PP 184 e-issn: 2319 42, p-issn No. : 2319 4197 2D Digital Image Correlation in strain analysis by Edge
More informationANSYS Tutorial Version 6
ANSYS Tutorial Version 6 Fracture Analysis Consultants, Inc www.fracanalysis.com Revised: November 2011 Table of Contents: 1.0 Introduction... 4 2.0 Tutorial 1: Crack Insertion and Growth in a Cube...
More informationTHE EFFECT OF THE FREE SURFACE ON THE SINGULAR STRESS FIELD AT THE FATIGUE CRACK FRONT
Journal of MECHANICAL ENGINEERING Strojnícky časopis, VOL 67 (2017), NO 2, 69-76 THE EFFECT OF THE FREE SURFACE ON THE SINGULAR STRESS FIELD AT THE FATIGUE CRACK FRONT OPLT Tomáš 1,2, POKORNÝ Pavel 2,
More informationRevision of the SolidWorks Variable Pressure Simulation Tutorial J.E. Akin, Rice University, Mechanical Engineering. Introduction
Revision of the SolidWorks Variable Pressure Simulation Tutorial J.E. Akin, Rice University, Mechanical Engineering Introduction A SolidWorks simulation tutorial is just intended to illustrate where to
More informationAssessment of concrete fracture parameters using Wedge. Splitting Test and Mark Tracking method
Assessment of concrete fracture parameters using Wedge Splitting Test and Mark Tracking method Amine JAMAAOUI, Univ. Limoges, GEMH, EA 378, F-9300 EGLETONS, amine.jamaaoui@etu.unilim.fr Alexandre GANGNANT,
More informationDepth-Layer-Based Patient Motion Compensation for the Overlay of 3D Volumes onto X-Ray Sequences
Depth-Layer-Based Patient Motion Compensation for the Overlay of 3D Volumes onto X-Ray Sequences Jian Wang 1,2, Anja Borsdorf 2, Joachim Hornegger 1,3 1 Pattern Recognition Lab, Friedrich-Alexander-Universität
More informationTABLE OF CONTENTS SECTION 2 BACKGROUND AND LITERATURE REVIEW... 3 SECTION 3 WAVE REFLECTION AND TRANSMISSION IN RODS Introduction...
TABLE OF CONTENTS SECTION 1 INTRODUCTION... 1 1.1 Introduction... 1 1.2 Objectives... 1 1.3 Report organization... 2 SECTION 2 BACKGROUND AND LITERATURE REVIEW... 3 2.1 Introduction... 3 2.2 Wave propagation
More informationINSTRUCTIONAL PLAN L( 3 ) T ( ) P ( ) Instruction Plan Details: DELHI COLLEGE OF TECHNOLOGY & MANAGEMENT(DCTM), PALWAL
DELHI COLLEGE OF TECHNOLOGY & MANAGEMENT(DCTM), PALWAL INSTRUCTIONAL PLAN RECORD NO.: QF/ACD/009 Revision No.: 00 Name of Faculty: Course Title: Theory of elasticity L( 3 ) T ( ) P ( ) Department: Mechanical
More informationKrzysztof Dabrowiecki, Probe2000 Inc Southwest Test Conference, San Diego, CA June 08, 2004
Structural stability of shelf probe cards Krzysztof Dabrowiecki, Probe2000 Inc Southwest Test Conference, San Diego, CA June 08, 2004 Presentation Outline Introduction Objectives Multi die applications
More informationThree-Dimensional Static and Dynamic Stress Intensity Factor Computations Using ANSYS
Three-Dimensional Static and Dynamic Stress Intensity Factor Computations Using ANSYS X. M. Jia Chongqing Communications Research & Design Institute, Chongqing China F. Dai Q. Z. Wang Department of Civil
More informationixcube 4-10 Brief introduction for membrane and cable systems.
ixcube 4-10 Brief introduction for membrane and cable systems. ixcube is the evolution of 20 years of R&D in the field of membrane structures so it takes a while to understand the basic features. You must
More informationCharacterization of damage mechanisms in glass fibre reinforced polymers using X-ray computed tomography
11th European Conference on Non-Destructive Testing (ECNDT 2014), October 6-10, 2014, Prague, Czech Republic More Info at Open Access Database www.ndt.net/?id=16410 Characterization of damage mechanisms
More informationElfini Solver Verification
Page 1 Elfini Solver Verification Preface Using this Guide Where to Find More Information Conventions What's new User Tasks Static Analysis Cylindrical Roof Under its Own Weight Morley's Problem Twisted
More informationUsing 3D Digital Image Correlation (3D-DIC) to Measure CTOD in a Semi-Elliptical Surface Crack
Proceedings Using 3D Digital Image Correlation (3D-DIC) to Measure CTOD in a Semi-Elliptical Surface Crack Kaveh Samadian *, Stijn Hertelé * and Wim De Waele * Department of Electrical Energy, Metals,
More informationIntroduction to Finite Element Analysis using ANSYS
Introduction to Finite Element Analysis using ANSYS Sasi Kumar Tippabhotla PhD Candidate Xtreme Photovoltaics (XPV) Lab EPD, SUTD Disclaimer: The material and simulations (using Ansys student version)
More informationTechnology), Beijing, , China;
1 st International Conference on Composite Materials Xi an, 0-5 th August 017 FULL 3D INTERIOR DEFORMATION OF A COMPOSITE BEAM WITH PREPARED SLOT UNDER 3-POINT BENDING USING DIGITAL VOLUMETRIC SPECKLE
More informationModule 1: Introduction to Finite Element Analysis. Lecture 4: Steps in Finite Element Analysis
25 Module 1: Introduction to Finite Element Analysis Lecture 4: Steps in Finite Element Analysis 1.4.1 Loading Conditions There are multiple loading conditions which may be applied to a system. The load
More informationThree dimensional experimental and. numerical multiscale analysis of a fatigue. crack
Three dimensional experimental and numerical multiscale analysis of a fatigue crack Johann Rannou, a Nathalie Limodin, b Julien Réthoré, a Anthony Gravouil, a Wolfgang Ludwig, b,c Marie-Christine Baïetto-Dubourg,
More informationImpact of Complex System Behavior on Seismic Assessment of RC Bridges
Impact of Complex System Behavior on Seismic Assessment of RC Bridges Amr S. Elnashai Department of Civil and Environmental Engineering Based on the PhD Work of Thomas Frankie, Advised by Kuchma, Spencer
More informationFLOW VISUALISATION OF POLYMER MELT CONTRACTION FLOWS FOR VALIDATION OF NUMERICAL SIMULATIONS
FLOW VISUALISATION OF POLYMER MELT CONTRACTION FLOWS FOR VALIDATION OF NUMERICAL SIMULATIONS R Spares, T Gough, M T Martyn, P Olley and P D Coates IRC in Polymer Science & Technology, Mechanical & Medical
More informationNon-Linear Analysis of Base Plates in Automated Storage Systems
Non-Linear Analysis of Base Plates in Automated Storage Systems Ph.D. Juan José del Coz Díaz, Fco. Suarez Domínguez, Paulino J.Garcia Nieto University of Oviedo. Construction and Applied Mathematics Area.
More informationApplication of a FEA Model for Conformability Calculation of Tip Seal in Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2008 Application of a FEA Model for Conformability Calculation of Tip Seal in Compressor
More informationIntroduction to the Finite Element Method (3)
Introduction to the Finite Element Method (3) Petr Kabele Czech Technical University in Prague Faculty of Civil Engineering Czech Republic petr.kabele@fsv.cvut.cz people.fsv.cvut.cz/~pkabele 1 Outline
More informationEngineering Effects of Boundary Conditions (Fixtures and Temperatures) J.E. Akin, Rice University, Mechanical Engineering
Engineering Effects of Boundary Conditions (Fixtures and Temperatures) J.E. Akin, Rice University, Mechanical Engineering Here SolidWorks stress simulation tutorials will be re-visited to show how they
More informationCHAPTER 4. Numerical Models. descriptions of the boundary conditions, element types, validation, and the force
CHAPTER 4 Numerical Models This chapter presents the development of numerical models for sandwich beams/plates subjected to four-point bending and the hydromat test system. Detailed descriptions of the
More informationThe Electrochemical Innovation Lab X-ray Suite: from macro- to nano-ct
The Electrochemical Innovation Lab X-ray Suite: from macro- to nano-ct Dr. Francesco Iacoviello, Toby Neville & the Electrochemical Innovation Lab f.iacoviello@ucl.ac.uk MANIFEST - 2017 November 10 th,
More informationFRANC3D / OSM Tutorial Slides
FRANC3D / OSM Tutorial Slides October, 2003 Cornell Fracture Group Tutorial Example Hands-on-training learn how to use OSM to build simple models learn how to do uncracked stress analysis using FRANC3D
More informationDESCRIPTION OF THE LABORATORY RESEARCH FACILITY:
DESCRIPTION OF THE LAORATORY RESEARCH FACILITY: Introduction Drexel researchers have designed and built a laboratory (Figure 1) in order to support several ongoing field research projects and to facilitate
More informationBackground. Outline. Radiographic Tomosynthesis: Image Quality and Artifacts Reduction 1 / GE /
Radiographic Tomosynthesis: Image Quality and Artifacts Reduction Baojun Li, Ph.D Department of Radiology Boston University Medical Center 2012 AAPM Annual Meeting Background Linear Trajectory Tomosynthesis
More informationGuidelines for proper use of Plate elements
Guidelines for proper use of Plate elements In structural analysis using finite element method, the analysis model is created by dividing the entire structure into finite elements. This procedure is known
More informationRELIABILITY OF THE FEM CALCULATIONS OF THE FRACTURE MECHANICS PARAMETERS
International Conference on Economic Engineering and Manufacturing Systems Braşov, 26 27 November 2009 RELIABILITY OF THE FEM CALCULATIONS OF THE FRACTURE MECHANICS PARAMETERS Galina TODOROVA, Valentin
More informationMode-I parameter identification for an interface model describing damage in adhesive joints
Mode-I parameter identification for an interface model describing damage in adhesive joints Adalgisa Zirpoli 1, Roberto Fedele 1, Nunziante Valoroso 2 1 Dipartimento di Ingegneria Strutturale, Politecnico
More informationEquipment Site Description
Equipment Site Description The primary objective of this project is to create a facility in which a full-scale subassembly can be subjected to complex loading and imposed deformation states at multiple
More informationME 345: Modeling & Simulation. Introduction to Finite Element Method
ME 345: Modeling & Simulation Introduction to Finite Element Method Examples Aircraft 2D plate Crashworthiness 2 Human Heart Gears Structure Human Spine 3 F.T. Fisher, PhD Dissertation, 2002 Fluid Flow
More information(LSS Erlangen, Simon Bogner, Ulrich Rüde, Thomas Pohl, Nils Thürey in collaboration with many more
Parallel Free-Surface Extension of the Lattice-Boltzmann Method A Lattice-Boltzmann Approach for Simulation of Two-Phase Flows Stefan Donath (LSS Erlangen, stefan.donath@informatik.uni-erlangen.de) Simon
More information% StrainMaster Portable. Full Field Measurement and Characterization of Materials, Components and Structures
7.72974 % StrainMaster Portable Full Field Measurement and Characterization of Materials, Components and Structures Whole Surface Measurements StrainMaster systems are based around the technique known
More informationExample 24 Spring-back
Example 24 Spring-back Summary The spring-back simulation of sheet metal bent into a hat-shape is studied. The problem is one of the famous tests from the Numisheet 93. As spring-back is generally a quasi-static
More informationProjection savings in CT-based Digital Volume Correlation
Experimental Mechanics (Special issue on DIC) manuscript No. (will be inserted by the editor) Projection savings in CT-based Digital Volume Correlation Hugo Leclerc Stéphane Roux François Hild Received:
More informationCHAPTER-10 DYNAMIC SIMULATION USING LS-DYNA
DYNAMIC SIMULATION USING LS-DYNA CHAPTER-10 10.1 Introduction In the past few decades, the Finite Element Method (FEM) has been developed into a key indispensable technology in the modeling and simulation
More informationFEM (MSC.Nastran SOL600) and Multibody (MSC.Adams flexible contact) solutions: an application example in helicopter rotor analysis
FEM (MSC.Nastran SOL6) and Multibody (MSC.Adams flexible contact) solutions: an application example in helicopter rotor analysis Daniele Catelani MSC. Software - EMEA Aerospace Consultant Francesca Bianchi
More informationaxis, and wavelength tuning is achieved by translating the grating along a scan direction parallel to the x
Exponential-Grating Monochromator Kenneth C. Johnson, October 0, 08 Abstract A monochromator optical design is described, which comprises a grazing-incidence reflection and two grazing-incidence mirrors,
More informationCorrecting INS Drift in Terrain Surface Measurements. Heather Chemistruck Ph.D. Student Mechanical Engineering Vehicle Terrain Performance Lab
Correcting INS Drift in Terrain Surface Measurements Ph.D. Student Mechanical Engineering Vehicle Terrain Performance Lab October 25, 2010 Outline Laboratory Overview Vehicle Terrain Measurement System
More informationFINITE ELEMENT EVALUATION OF THE MECHANICAL BEHAVIOUR OF A DETAILED FOOT/FOOTWEAR MODEL
Proceedings of the 6th International Conference on Mechanics and Materials in Design, Editors: J.F. Silva Gomes & S.A. Meguid, P.Delgada/Azores, 26-3 July 215 PAPER REF: 5479 FINITE ELEMENT EVALUATION
More informationDETECTION AND QUANTIFICATION OF CRACKS IN PRESSURE VESSELS USING ESPI AND FEA MODELLS
DETECTION AND QUANTIFICATION OF CRACKS IN PRESSURE VESSELS USING ESPI AND FEA MODELLS J GRYZAGORIDIS, DM FINDEIS, JR MYLES Department of Mechanical Engineering University of Cape Town Abstract Non destructive
More informationIdentification of Crack in a Cantilever Beam using Improved PSO Algorithm
IJIRST International Journal for Innovative Research in Science & Technology Volume 1 Issue 11 April 2015 ISSN (online): 2349-6010 Identification of Crack in a Cantilever Beam using Improved PSO Algorithm
More informationSolid and shell elements
Solid and shell elements Theodore Sussman, Ph.D. ADINA R&D, Inc, 2016 1 Overview 2D and 3D solid elements Types of elements Effects of element distortions Incompatible modes elements u/p elements for incompressible
More informationA SIMPLE PATH-INDEPENDENT INTEGRAL FOR CALCULATING MIXED-MODE STRESS INTENSITY FACTORS
Fatigue Fracf. Engng Mater. Strucl. Vol. 15, No. 10, pp. 1041-1049, 1992 Printed in Great Britain 8756-758X/92 $5.00 + 0.00 Fatigue of Engineering Materials Ltd A SIMPLE PATH-INDEPENDENT INTEGRAL FOR ALULATING
More informationComputational Physics with X-rays: Optimizing and Parallelizing Ptychography Reconstruction and 3D X-ray Diffraction Visualization
Computational Physics with X-rays: Optimizing and Parallelizing Ptychography Reconstruction and 3D X-ray Diffraction Visualization Thomas L. Falch, Anne C. Elster (advisor), Jostein B. Fløystad (PhD student,
More informationLast Time? Inverse Kinematics. Today. Keyframing. Physically-Based Animation. Procedural Animation
Last Time? Inverse Kinematics Navier-Stokes Equations Conservation of Momentum & Mass Incompressible Flow Today How do we animate? Keyframing Procedural Animation Physically-Based Animation Forward and
More informationGeometrical Optics INTRODUCTION. Wave Fronts and Rays
Geometrical Optics INTRODUCTION In this experiment, the optical characteristics of mirrors, lenses, and prisms will be studied based on using the following physics definitions and relationships plus simple
More informationTHE digital image correlation (DIC) method obtains
A new digital image correlation algorithm for whole-field displacement measurement C. SU and L. ANAND Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 39, USA Abstract
More informationTAU mesh deformation. Thomas Gerhold
TAU mesh deformation Thomas Gerhold The parallel mesh deformation of the DLR TAU-Code Introduction Mesh deformation method & Parallelization Results & Applications Conclusion & Outlook Introduction CFD
More informationCharacteristic Aspects of SPH Solutions
Characteristic Aspects of SPH Solutions for Free Surface Problems: Source and Possible Treatment of High Frequency Numerical Oscillations of Local Loads. A. Colagrossi*, D. Le Touzé & G.Colicchio* *INSEAN
More informationANALYSIS AND OPTIMIZATION OF FLYWHEEL
Int. J. Mech. Eng. & Rob. Res. 2012 Sushama G Bawane et al., 2012 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 1, No. 2, July 2012 2012 IJMERR. All Rights Reserved ANALYSIS AND OPTIMIZATION OF FLYWHEEL
More informationFINITE ELEMENT SIMULATION OF ELASTIC AND QUASI STATIC CRACK PROPAGATION UNDER MIXED MODE LOADING CONDITIONS
1 Military Technical College Kobry El-Kobbah, Cairo, Egypt. 17 th International Conference on Applied Mechanics and Mechanical Engineering. FINITE ELEMENT SIMULATION OF ELASTIC AND QUASI STATIC CRACK PROPAGATION
More informationPhysics 4C Chabot College Scott Hildreth
Physics 4C Chabot College Scott Hildreth Snell s Law with Microwave Optics Experiment Goals: Experimentally verify Snell s Law holds for microwaves. Lab Safety Note! Although the microwaves in this experiment
More informationIntroduction to FEM Modeling
Total Analysis Solution for Multi-disciplinary Optimum Design Apoorv Sharma midas NFX CAE Consultant 1 1. Introduction 2. Element Types 3. Sample Exercise: 1D Modeling 4. Meshing Tools 5. Loads and Boundary
More informationA Multiple Constraint Approach for Finite Element Analysis of Moment Frames with Radius-cut RBS Connections
A Multiple Constraint Approach for Finite Element Analysis of Moment Frames with Radius-cut RBS Connections Dawit Hailu +, Adil Zekaria ++, Samuel Kinde +++ ABSTRACT After the 1994 Northridge earthquake
More informationFailure of Notched Laminates Under Out-of-Plane Bending Phase VII
Failure of Notched Laminates Under Out-of-Plane Bending Phase VII Fall 2014 Meeting Mitchell Daniels, Levi Suryan, & John P. Parmigiani, Oregon State University Motivation and Key Issues Failure of Notched
More informationOn Fig. 7.1, draw a ray diagram to show the formation of this image.
1- A small object is placed 30 cm from the centre of a convex lens of focal length 60 cm An enlarged image is observed from the other side of the lens (a) On Fig 71, draw a ray diagram to show the formation
More informationOdysseas Skartsis ENGN2340. Project LEFM Convergence Study 12/11/13
Odysseas Skartsis ENGN2340 Project LEFM Convergence Study 2//3 Thanks to Tianyang Zhang, Davide Grazioli, and Ruike Zhao for their helpful tips on using ABAQUS. Structure of this report Main body: Appendix:
More informationA rubber O-ring is pressed between two frictionless plates as shown: 12 mm mm
Problem description A rubber O-ring is pressed between two frictionless plates as shown: Prescribed displacement C L 12 mm 48.65 mm A two-dimensional axisymmetric analysis is appropriate here. Data points
More information3. Check by Eurocode 3 a Steel Truss
TF 3. Check by Eurocode 3 a Steel Truss Applicable CivilFEM Product: All CivilFEM Products Level of Difficulty: Moderate Interactive Time Required: 40 minutes Discipline: Structural Steel Analysis Type:
More informationApplication of Digital Image Correlation to Material Parameter Identification
12 th World Congress on Structural and Multidisciplinary Optimisation 05 th - 09 th, June 2017, Braunschweig, Germany Application of Digital Image Correlation to Material Parameter Identification Nielen
More informationComputational Geometry Algorithms for Animation of a Segmented Space Reflector Telescope
Computational Geometry Algorithms for Animation of a Segmented Space Reflector Telescope YULU CHEN, CHARLES W. LIU, JANE DONG, HELEN BOUSSALIS, KHOSROW RAD, CHARALAMBOS POULLIS Electrical and Computer
More informationCRACK TIP GROWTH MEASUREMENT USING DIGITAL IMAGE CORRELATION
CRACK TIP GROWTH MEASUREMENT USING DIGITAL IMAGE CORRELATION P.L. Reu, B.R. Rogillio and G.W. Wellman Sandia National Laboratories P.O. Box 8, Albuquerque, NM 8718-7 plreu@sandia.gov ABSTRACT We present
More informationCollapse Analyses on Spirally Welded Tapered Tubes using EC3 Generated Imperfections
Proceedings of the Annual Stability Conference Structural Stability Research Council Orlando, Florida, April 12-15, 2016 Collapse Analyses on Spirally Welded Tapered Tubes using EC3 Generated Imperfections
More informationBeams. Lesson Objectives:
Beams Lesson Objectives: 1) Derive the member local stiffness values for two-dimensional beam members. 2) Assemble the local stiffness matrix into global coordinates. 3) Assemble the structural stiffness
More informationOptimal Design of Remote Center Compliance Devices of Rotational Symmetry
Optimal Design of Remote Center Compliance Devices of Rotational Symmetry Yang Liu and Michael Yu Wang * Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin,
More informationCITY AND GUILDS 9210 UNIT 135 MECHANICS OF SOLIDS Level 6 TUTORIAL 15 - FINITE ELEMENT ANALYSIS - PART 1
Outcome 1 The learner can: CITY AND GUILDS 9210 UNIT 135 MECHANICS OF SOLIDS Level 6 TUTORIAL 15 - FINITE ELEMENT ANALYSIS - PART 1 Calculate stresses, strain and deflections in a range of components under
More informationRevised Sheet Metal Simulation, J.E. Akin, Rice University
Revised Sheet Metal Simulation, J.E. Akin, Rice University A SolidWorks simulation tutorial is just intended to illustrate where to find various icons that you would need in a real engineering analysis.
More informationSlope Stability of Open Pit Mine in 2D & 3D
Slope Stability of Open Pit Mine in D & D MIDASoft Inc. Angel Francisco Martinez Civil Engineer Email : a.martinez@midasit.com Integrated Solver Optimized for the next generation64-bit platform Finite
More informationAugmented Reality II - Camera Calibration - Gudrun Klinker May 11, 2004
Augmented Reality II - Camera Calibration - Gudrun Klinker May, 24 Literature Richard Hartley and Andrew Zisserman, Multiple View Geometry in Computer Vision, Cambridge University Press, 2. (Section 5,
More informationEvaluation of Credibility and Limitations of the Non- Rigid Registration of Micro-CT Images as a Tool for Local Strain Analysis
Evaluation of Credibility and Limitations of the Non- Rigid Registration of Micro-CT Images as a Tool for Local Strain Analysis G. Pyka 1, E. Van de Casteele 1, M. Depypere 2, G. Kerckhofs 1,3, J. Schrooten
More informationLast Time? Animation, Motion Capture, & Inverse Kinematics. Today. Keyframing. Physically-Based Animation. Procedural Animation
Last Time? Animation, Motion Capture, & Inverse Kinematics Navier-Stokes Equations Conservation of Momentum & Mass Incompressible Flow Today How do we animate? Keyframing Procedural Animation Physically-Based
More informationAppendix-B. (WoodFrameSolver Analysis Results and Comparison with SAP 2000)
Appendix-B ( Analysis Results and Comparison with SAP 2000) This Appendix presents some example models used in testing and verification. All the results and figures are obtained from the verification manual
More informationApplication of Finite Volume Method for Structural Analysis
Application of Finite Volume Method for Structural Analysis Saeed-Reza Sabbagh-Yazdi and Milad Bayatlou Associate Professor, Civil Engineering Department of KNToosi University of Technology, PostGraduate
More informationEULER-TYPE ALGORITHM APPLIED TO LEVELING PROCESS ANALYSIS
Engineering MECHANICS, Vol. 21, 2014, No. 3, p. 185 191 185 EULER-TYPE ALGORITHM APPLIED TO LEVELING PROCESS ANALYSIS František Šebek*, Jindřich Petruška*, Tomáš Návrat* Presented paper is focused on description
More informationTransparent Object Shape Measurement Based on Deflectometry
Proceedings Transparent Object Shape Measurement Based on Deflectometry Zhichao Hao and Yuankun Liu * Opto-Electronics Department, Sichuan University, Chengdu 610065, China; 2016222055148@stu.scu.edu.cn
More information3D Finite Element Software for Cracks. Version 3.2. Benchmarks and Validation
3D Finite Element Software for Cracks Version 3.2 Benchmarks and Validation October 217 1965 57 th Court North, Suite 1 Boulder, CO 831 Main: (33) 415-1475 www.questintegrity.com http://www.questintegrity.com/software-products/feacrack
More informationNEW WAVE OF CAD SYSTEMS AND ITS APPLICATION IN DESIGN
Vol 4 No 3 NEW WAVE OF CAD SYSTEMS AND ITS APPLICATION IN DESIGN Ass Lecturer Mahmoud A Hassan Al-Qadisiyah University College of Engineering hasaaneng@yahoocom ABSTRACT This paper provides some lighting
More informationX-FEM based modelling of complex mixed mode fatigue crack propagation
X-FEM based modelling of complex mixed mode fatigue crack propagation Hans Minnebo 1, Simon André 2, Marc Duflot 1, Thomas Pardoen 2, Eric Wyart 1 1 Cenaero, Rue des Frères Wright 29, 6041 Gosselies, Belgium
More informationCombination of Markerless Surrogates for Motion Estimation in Radiation Therapy
Combination of Markerless Surrogates for Motion Estimation in Radiation Therapy CARS 2016 T. Geimer, M. Unberath, O. Taubmann, C. Bert, A. Maier June 24, 2016 Pattern Recognition Lab (CS 5) FAU Erlangen-Nu
More information