midas FEA V320 Table of Contents

Transcription

1 midas FEA V320 New Feature 01 CFD Moving Mesh Pre Process 01 File Open > File Preview 02 Extract Surface 03 Frame to Solid > Import 04 Tetra Auto mesh generation 05 Mesh options 06 Auto mesh Solid Function options 07 Protrude Mesh > Element Edge 2D Mesh 08 Seeding definition 09 Mass Center > Node 10 Nonlinear Point spring 11 Tapered Beam > Section Template Post Process 01 Quarter Mirror Mode 02 Combination/Envelop Results 03 Reaction Result Summations 04 Reinforcement Post Mesh Set 05 Heat of Hydration Result Bug Fix List Table of Contents

2 New Feature (1) CFD Moving Mesh Time Step 200 Time Step 600 Time Step 400 FEA now supports ALE(Arbitrary Lagrangian-Eulerian) technique using FSI(Fluid-Structure Interaction) analysis Stiffness (per unit span) considering the stiffness and mass matrix can also consider both modal and structural damping. Predict fluid and structural interaction behavior. Compute fluttering coefficients by performing buffeting and fluttering analysis. 1/23

3 Pre Process File open (1) File Preview Window & Status Bar Number of Nodes and Elements for Current Model A new preview window displays information about the model pertaining to the number of elements, nodes, and available results. This 현재모델의 new feature 요소와allows 절점수를 users 바로to 표현해 quickly 주는 recognize 기능지원 files that have been completed or in progress. 2/23 2

4 Pre Process - Geometry (2) Extract Surface Extract Surface Surface Automesh Easy to use function to extract surfaces from solids. This is a convenient feature which allows users to generate shell elements on top of solid elements. 3/23 3

5 Pre Process - Geometry (3) Enhanced Frame to Solid Midas/Civil Geometry Solid Automesh Enhanced Frame to Solid engine to import frame sections from Midas/Civil into FEA as geometry solids. This enhancement allows easy import of tapered cross sections. 4/23 4

6 Pre Process Mesh (1) (4) Performance & GUI Simplify GUI Simplify GUI Up to 50% increase in Tetra Automesh generation. Separate Advanced option button includes Mesh Window and options. Increase in meshing speeds can reduce modeling time. Separate meshing window allows users to easily navigate and select options. 5/23 5

7 Pre Process Mesh (2) (5) Meshing Previous Align Edge Align Edge seed near inner loop option. Improve element mesh and result accuracy for objects with void sections. 6/23 6

8 Pre Process Mesh (3) (6) Add Options in Automesh Solid Function After automeshing, execute remeshing to attain high mesh quality. Even if some parts fail to mesh, try to execute mesh for all parts. If the geometry shape is feasible for mapped mesh, try to execute it. Remesh and Map mesh options integrated into auto-mesh function. These options can reduce the number of elements generated, increase analysis speeds by generating higher mesh quality and improve overall accuracy of results. 7/23 7

9 Pre Process Mesh (4) (7) Prutrude mesh (Extrude, Revolve, Sweep, Project, Offset, Fill) Uniform and non-uniform options can now control element s length and division. Option to generate 2D elements directly from Element Edge. Provide detail meshing tools for higher and more control over mesh generation. Geometry edges and also element edges can be extruded to generate 2D elements. 8/23 8

10 Pre Process Mesh (5) (8) Seeding & Measure Default seeds showing numbers Add Mass and Weight Seeds adopting even number option Seeding Option includes Even Number of Seeds. Measure Elements includes measure of Mass and Weight for 2D and 3D elements. Conveniently generate mapped mesh elements by considering even number of seeds. Easily obtain information about the mass and weight for 2D and 3D elements. 9/23 9

11 Pre Process Mesh (6) (9) Create Node Creating node at mass center New option to define nodes based on the center of mass summation. Easily impose concentrated loads or model rigid links at the Mass Center. 10/23 10

12 Pre Process Analysis>Property (10) Nonlinear Point Spring Describe nonlinear point spring behavior using nonlinear elastic type. Capture various type of nonlinear behavior using Point Spring. 11/23 11

13 Pre Process Analysis>Property (11) Tapered Beam: Section Template Tapered Beam with Section Template From Tapered Beam, input characteristics include Section-i and Section-j cross section Easy input and visual representation considering cross characteristics. 12/23 12

14 Post Process Mirror Plane (1) Quarter Mirror Mode in Post Processor 1/4 of a model can now be mirrored to display full model and corresponding results. The mirror option saves time by allowing users to present symmetric or full model with corresponding results from quarter of a model. 13/23 13

15 Post Process (2) Combination/Envelope Results New feature which can consider linear and moving loads as combinations with option to scale. Load combinations for both linear and envelope can be assigned with Max, Min, and Absolute. Users can now study behavior due to load combinations. Increase post processor result extraction by assigning specific Max, Min, and Absolute definitions. 14/23 14

16 Post Process (3) Summation for Reactions (4) Reinforcement Post mesh Set One post mesh set Created Distinguishes all pre mesh sets as individual post mesh sets (3) New function to calculate the summation of reactions. (4) Reinforcement tendon results are now displayed for each and every tendon mesh set. (3) Ability to ensure and verify results by inspecting the reaction forces. (4) Easy viewing of results for reinforcement tendon. 15/23 15

17 Post Process (5) Hydration Result in element Crack Ratio(Normal) Nodal Average Result Element Result Node & Stress Component results for Allowable Stress and Crack Ratio can be extracted from node to element level. (Nodal Average checked off for Element) Output results to the post processor at the element level. Averaged crack ratio and tensile strength at discontinuity Averaging. 16/23 16

18 Bug Fix List Pre/Post (1) 3D Dxf import engine - Misinterpretation and errors occurred when importing 1D lines from CAD 3D dxf files. File > import > Dxf 3D File > import > Advanced Geometry > DWG/DXF - Improved import 3D dxf engine. (2) Saving model files that contains Arbitrary load assignment - Arbitrary load assignments after saving and renaming model file produced different results prior to saving the model file under different name with the same arbitrary load. Analysis > Load > Arbitrary Load Rename - Modified arbitrary load assignment. 17/23 17

19 Bug Fix List Pre/Post (3) Error when interpreting shell to solid. - Misinterpretation of shell from small sized solid geometry. Geometry > Solid > Shell -> Solid - Small sized solid geometry can correctly interpret shell shapes. (4) Pre-Neutral Import Error - Error occurs when importing pre-neutral files. File > Import > Pre-Neutral (FEA) - Modified pre-neutral format to correctly register during import. 18/23 18

20 Bug Fix List Pre/Post (5) Error in Batch Analysis for model files containing reinforcements -Error occurs when performing batch analysis for models containing reinforcements requested input command. Analysis > Batch Analysis - Modified batch analysis for model files containing reinforcements. (6) Stress Linearization for Axisymmetric unable to consider step operations - Unable to introduce steps when performing stress Linearization for Axisymmetric models. Post > Stress Linearization for Axisymmetric - Modified Analysis Case to introduce steps when defined by user. 19/23 19

21 Bug Fix List Pre/Post (7) Error in graph out for Time History Analysis - Results displayed in output graph returns zero values for Time History Analysis. Post > Time History Analysis > Time History Graph -Results displayed in output graph register correctly for Time History Analysis. (8) Erroneous results extracted from Coordinates & Mesh using Local Direction Force Sum - Incorrect results from Auto-mesh and Map-meshed elements when using Local Direction Force Sum. Post > Local Direction Force Sum - Modified Cutting Line in Local Direction Force Sum function. 20/23 20

22 Bug Fix List - Analysis (9) Error in Subspace and Lanczos Type when performing Eigenvalue analysis. - Errors found in subspace and Lanczos type. Analysis Case > Analysis Control > Eigenvector Type - Modified Eigenvalue analysis to register both subspace and Lanczos type. (10) Error in elastic link elements results in Time History/Eignenvalue analysis - When performing Time History/Eigenvalue analysis, elastic link elements exhibited non-linear behavior. - Modified iterative method to govern only linear behavior for elastic link elements. 21/23 21

23 Bug Fix List - Analysis (11) Error in Response Spectrum analysis when considering reinforcements. - Solver failed to perform analysis for response spectrum analysis that include reinforcement. Analysis > Analysis Case > Response Spectrum - Modified solver routine. (12) Erroneous Reinforcement behavior in Time History analysis - Reinforcements did not exhibit any changes in stiffness. Analysis > Analysis Case > Time History - Modified Time History and reinforcement functions to consider stiffness variation. 22/23 22

24 Bug Fix List - Analysis (13) User Defined Load Step error for load step factor - User Defined Load Step introducing load step factors other than value 1 registered incorrect load step factors in subsequent construction stages. Analysis > Analysis Case > Construction Stage - Load factors and forces transfer correctly over to subsequent stages. (14) Incorrect allowable stress calculations when user defined material is used in Heat of Hydration analysis - User defined material used in heat of hydration analysis did not update age values. Analysis > Analysis Case > Heat of Hydration - Age values correctly updated when user defined material is considered in heat of hydration analysis. 23/23 23