Agenda. 9:00 Welcome. 1:00 - Computing Utilities. 9:15 - Mechanical Demonstration. 1:30 - CFD Update. 3:00 Break 3:15 ANSYS Customization Toolkit

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1 Agenda 9:00 Welcome 1:00 - Computing Utilities Introductions What is new at CAEA 9:15 - Mechanical Demonstration CAD connection utilities (within the CAD API) Mechanical setup Rigid Bodies, Joints, contact, meshing Using the Mechanical model as a template. Submodeling (parametric mesh refinement) 10:30 - Break 10:45 - Result evaluation: What do I do with ihthis stress? Fatigue calculation Automating the process Direct Optimization RSO(robust design, DFSS) Fracture 12:00 Lunch HPC GPU RSM HPC Parametric Pack) 1:30 - CFD Update Design iteration/optimization using CFX Shape optimization using Fluent 1-way FSI 3:00 Break 3:15 ANSYS Customization Toolkit What is ACT? Examples (acoustics, wind load, DYNA drop test. 4:00 Engineering Knowledge Manager 4:15 ANSYS Composite Prep-PostPost 4:30 MAPDL 1

2 ANSYS Composite Prep/Post ANSYS v14.5 Update Seminar CAE Associates Inc. and ANSYS Inc. Proprietary 2013 CAE Associates Inc. and ANSYS Inc. All rights reserved.

3 ACP Background ANSYS Composite PrepPost (ACP) is an add-on module to existing structural solver licenses (Professional and above) dedicated to the modeling of layered composite structures. First introduced in v12 it has gone through many updates and now incorporates seamlessly with Workbench at v14.5 3

4 Typical ACP Usage A shell element model is developed in Mechanical Meshing shell geometry, applying loads and boundary conditions. Can be in ANSYS Mechanical or Mechanical APDL Define materials (Engineering Data, or APDL) Import the models in ANSYS Composite PrepPost Define Composite Fabrics: Fabric: a material and a thickness Laminate: an assembly of fabrics (with orientations) Sublaminates: an assembly of fabrics and laminates (with orientations) Define the element orientation (so as to properly orient materials) Define the ply sequence for groups of elements (usually corresponding to faces of the geometry) Solve the model - computed by the standard ANSYS solver, in batch mode. Post-process the results in ACP: deformations, thicknesses and failure criteria. 4

5 Incorporation into WB Architecture Starting with v14.0 ACP is incorporated directly into the WB architecture. Define composite material properties Import/Generate surface geometry Set-up composite material fabric definitions, element orientations, ply layup, etc Generate Shell Mesh 5

6 Composite Materials In Engineering Data, there is now a composite materials library. Show Libraries Material does not need to be assigned to bodies in Mechanical. Material assignment is done in ACP. All materials a in Engineering g Data are brought into ACP. 6

7 Starting ACP from WB Once shell mesh is generated and materials defined, ACP can be started by right click: Edit 7

8 Solving and Post-processing Once the model is setup in APC(Pre) it can be linked to whatever type of analyses you need to solve: Then connect ACP(Post) to the Solution of that analysis. 8

9 ACP Modeling Capabilities Multiple oriented element sets allow for multi-laminate build-up. 9

10 Parametric Modeling of Composites Since ACP is integrated into Workbench, the composite data from ACP will be updated with any parameter changes in WB. Example below shows parametric changes of doubler width shown in red. 10

11 Post-processing of Composite Results Efficient post-processing of composite-specific results quantities. New Sampling Element post-processing. Plot worst case failure criteria over all layers. Pick element and see stress/strain t and dfailure through hthe thickness 11

12 Post-processing of Composite Results Make thru-thickness stress plots and account for interlaminar normal stresses with shells. Traditional shell approaches can not account for interlaminar normal stress (shown in blue curve) ANSYS Composite PrepPost can predict these base on the work of Roos, Kress, & Ermanni Critical Stresses in Bend Thru Thickness ILS & ILN Stress Plots Solids Thru Thickness ILS & ILN Stress Plots Shells 12

13 Post-processing of Composite Results Sandwich Construction Post-processing. Wrinkling Local buckling of a face sheet under compression Failure indicator available using shell modeling of sandwich Core Failure Local failure of core in shear or tensile loading Failure indicator available using shell modeling of sandwich 13

14 Advanced ACP Capabilities Fiber orientation prediction and modification. Use internal ACP draping simulation to compute orientation changes due to geometry curvature, develop flat pattern. Interface with Vistagy s s FiberSim. Modify the fiber orientation to something that is actually observed on the manufacturing floor through alignment with local rosettes. 14

15 Advanced ACP Capabilities 3D Solid Modeling: If a composite part is thick and bulky a shell mesh may not be sufficient to predict accurate results. One of ACP(Pre) strengths is that the 2D shell mesh can be extruded into a 3D solid model. CAD support: STEP and IGES geometries can be imported to define thick cores or use as guides for 3D extrusions. R14 Improved solid model extrusion, transitioning, and drop-off capabilities 15

16 Advanced ACP Capabilities Even more Map composite thickness and angles through table look-up. Build complex assemblies including contact. Customize layups using scripts and tables (Filament winding) Multiple solid models can be combined through links to MAPDL. 2-Way FSI with composites 16

17 ACP v14.5 Enhancements Workbench now has the capability to operate directly on the extruded solid model from ACP in Mechanical. 17

18 ACP v14.5 Enhancements In addition, multiple Mechanical models can now be combined in Workbench, so the composite solid can be combined with the metal solid. Composite Shell Model Composite Solid Model Combined Model Metal Solid Model 18

19 ACP v14.5 Enhancements New functionality to publish parameters in ACP Pre and Post for the use within the Workbench parameter manager. Ply thickness, ply angle, number of layers, etc Boolean parameters: Layer Active /inactive 19

20 ACP Demo CAE Associates Inc. and ANSYS Inc. Proprietary 2013 CAE Associates Inc. and ANSYS Inc. All rights reserved.