29.41 Diffusivity object

The Diffusivity object specifies mass diffusivity.

Access

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

This method creates a Diffusivity object.

Path

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

Required argument

table

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

Optional arguments

type

A SymbolicConstant specifying the type of diffusivity. Possible values are ISOTROPIC, ORTHOTROPIC, and ANISOTROPIC. The default value is ISOTROPIC.

law

A SymbolicConstant specifying the diffusion behavior. Possible values are GENERAL and FICK. The default value is GENERAL.

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 type=ISOTROPIC, the table data specify the following:

If type=ORTHOTROPIC, the table data specify the following:

If type=ANISOTROPIC, the table data specify the following:

Return value

A Diffusivity object.

Exceptions

RangeError.

This method modifies the Diffusivity object.

Required arguments

None.

Optional arguments

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

Return value

None

Exceptions

RangeError.

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

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

pressureEffect

A PressureEffect object.

soretEffect

A SoretEffect object.