CrushableFoam object

The CrushableFoam object specifies the crushable foam plasticity model.

The following topics are discussed:

Access

import material
mdb.models[name].materials[name].crushableFoam
import odbMaterial
session.odbs[name].materials[name].crushableFoam

CrushableFoam(...)

This method creates a CrushableFoam object.

Path

mdb.models[name].materials[name].CrushableFoam
session.odbs[name].materials[name].CrushableFoam

Required arguments

table

A sequence of sequences of Floats specifying the items described below.

Optional arguments

hardening

A SymbolicConstant specifying the type of hardening/softening definition. Possible values are VOLUMETRIC and ISOTROPIC. The default value is VOLUMETRIC.

temperatureDependency

A Boolean specifying whether the data depend on temperature. The default value is OFF.

dependencies

An Int specifying the number of field variable dependencies. The default value is 0.

Table data

If hardening=VOLUMETRIC, the table data specify the following:

  • Ratio, k, of initial yield stress in uniaxial compression, σc0, to initial yield stress in hydrostatic compression, pc0; 0.0 <k< 3.0.

  • Ratio, kt, of yield stress in hydrostatic tension, pt, to initial yield stress in hydrostatic compression, pc0. The default value is 1.0.

  • Temperature, if the data depend on temperature.

  • Value of the first field variable, if the data depend on field variables.

  • Value of the second field variable.

  • Etc.

If hardening=ISOTROPIC, the table data specify the following:

  • Ratio, k, of initial yield stress in uniaxial compression, σc0, to initial yield stress in hydrostatic compression, pc0; 0.0 ≤k≤ 3.0.

  • Plastic Poisson's ratio.νp; -1≤νp≤0.5.

  • Temperature, if the data depend on temperature.

  • Value of the first field variable, if the data depend on field variables.

  • Value of the second field variable.

  • Etc.

Return value

A CrushableFoam object.

Exceptions

RangeError.

setValues(...)

This method modifies the CrushableFoam object.

Required arguments

None.

Optional arguments

The optional arguments to setValues are the same as the arguments to the CrushableFoam method.

Return value

None.

Exceptions

RangeError.

Members

The CrushableFoam object has members with the same names and descriptions as the arguments to the CrushableFoam method.

In addition, the CrushableFoam object can have the following members:

crushableFoamHardening

A CrushableFoamHardening object.

rateDependent

A RateDependent object.

Corresponding analysis keywords