Keyword type: model definition, material
This option is used to define the elastic properties of a material. There is one optional parameter TYPE. Default is TYPE=ISO, other values are TYPE=ORTHO for orthotropic materials and TYPE=ANISO for anisotropic materials. All constants may be temperature dependent.
For orthotropic and fully anisotropic materials, the coefficients satisfy the equation:
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where is the second Piola-Kirchhoff stress and
is the Lagrange deformation tensor. For linear calculations, these reduce to the generic stress and strain tensors.
First line:
Following line for TYPE=ISO:
Following lines, in a pair, for TYPE=ORTHO: First line of pair:
Following lines, in sets of 3, for TYPE=ANISO: First line of set:
Example: *ELASTIC,TYPE=ORTHO 500000.,157200.,400000.,157200.,157200.,300000.,126200.,126200., 126200.,294.
defines an orthotropic material for temperature T=294. Since the definition includes values for only one temperature, they are valid for all temperatures.
Example files: aniso, beampo1.