Next: *ELEMENT Up: Input deck format Previous: *DYNAMIC Contents

##
*ELASTIC

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:

| (12)

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:

- *ELASTIC
- Enter the TYPE parameter and its value, if needed

Following line for TYPE=ISO:

- Young's modulus.
- Poisson's ratio.
- Temperature.

Repeat this line if needed to define complete temperature dependence.

Following lines, in a pair, for TYPE=ORTHO: First line of pair:

- .
- .
- .
- .
- .
- .
- .
- .

Second line of pair:

- .
- Temperature.

Repeat this pair if needed to define complete temperature dependence.

Following lines, in sets of 3, for TYPE=ANISO: First line of set:

- .
- .
- .
- .
- .
- .
- .
- .

Second line of set:

- .
- .
- .
- .
- .
- .
- .
- .

Third line of set:

- .
- .
- .
- .
- .
- Temperature.

Repeat this set if needed to define complete temperature dependence.

    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.

Next: *ELEMENT Up: Input deck format Previous: *DYNAMIC Contents