In materials that undergo extremely large deformations, such as soft foams, an element may become so distorted that the volume…
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Element coordinate system and invariant node numbering: Shell elements stress update calculations in LS-DYNA are done in a local element…
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Following is a description of the *MAT_TRIP material model for TRIP-steel. For a description of the keyword card format please…
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The material models most likely to be applicable to polymers and which include treatment of damage and/or failure are: *MAT_081 (*MAT_PLASTICITY_WITH_DAMAGE)…
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Below, a table of history variables of certain material models available in LS-DYNA is given. One must set NEIPH and/or…
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First of all, you may check that your experimental data from a uniaxial tension test is expressed in terms of…
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You may find examples and a tutorial at http://www.dynaexamples.com Eulerian fluids such as air or water are generally modeled using *MAT_NULL and…
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A. Transverse shear strain in composites By default, shells in LS-DYNA make the assumption of uniform transverse shear strain. This…
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In LS_DYNA V971, solid formulations ELFORM 19/20 and material models *MAT_138, *MAT_184, *MAT_185, *MAT_186 (*MAT_COHESIVE_MIXED_MODE, *MAT_COHESIVE_ELASTIC, *MAT_COHESIVE_TH, *MAT_COHESIVE_GENERAL) correspond to cohesive elements, whereby *MAT_138 is not available until LS-DYNA V971 R3. The…
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