ANSYS Explicit Dynamics-Explicit Dynamics:Meshing

•Uniform element size (in finest zoned regions)

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–Smallest element size controls the time step used to advance the solution in time

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–Explicit analyses compute dynamic stress waves that propagate throughout the entire mesh

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•Element size controlled by the user throughout the mesh

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–Not automatically dependent on geometry

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•Implicit analyses usually have static region of stress concentration where mesh is refined (strongly dependent on geometry)

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•In explicit analyses, the location of regions of high stress constantly change as stress waves propagate through the mesh

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–Mesh refinement is usually used to improve efficiency

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•Mesh transitions should be smooth for maximum accuracy

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•Hex-dominant meshing preferred

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–More efficient

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Sometimes more accurate for slower transients

•Right-click Mesh in the Outline Tree to:

– Insert

•Method

•Sizing

•Contact Sizing

•Refinement

•Mapped Face Meshing

•Match Control

•Pinch

•Inflation

–Update

–Generate Mesh

– Preview Surface Mesh

– Show Sweepable Bodies

–Preview Inflation

– Clean

– Rename

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