Creep object

The Creep object defines a creep law.

This page discusses:

Access

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

Creep(...)

This method creates a Creep object.

Path

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

Required arguments

table

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

Optional arguments

law

A SymbolicConstant specifying the strain-hardening law. Possible values are STRAIN, TIME, HYPERBOLIC_SINE, USER, ANAND, DARVEAUX,DOUBLE_POWER, POWER_LAW, and TIME_POWER_LAW. The default value is STRAIN.

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.

time
A SymbolicConstant specifying the time interval for relevant laws. Possible values are CREEP and TOTAL. The default value is TOTAL.

Table data

If law=STRAIN or law=TIME, the table data specify the following:

  • A.

  • n.

  • m.

  • 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 law=HYPERBOLIC_SINE, the table data specify the following:

  • A.

  • B.

  • n.

  • △⁢H, if the data depend on temperature.

  • R.

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

  • Value of the second field variable.

  • Etc.

If law=ANAND, the table data specify the following:

  • s 1 .

  • Q R .

  • A .

  • ξ .

  • m .

  • A 0 .

  • S ^ .

  • n .

  • a .

  • S 2 .

  • S 3 .

  • A 1 .

  • A 2 .

  • A 3 .

  • A 4 .

If law=DARVEAUX, the table data specify the following:

  • C s s .

  • Q R .

  • α .

  • n .

  • ϵ T .

  • B .

If law=DOUBLE_POWER, the table data specify the following:

  • A 1 .

  • B 1 .

  • C 1 .

  • A 2 .

  • B 2 .

  • C 2 .

  • σ 0 .

If law=POWER_LAW or law=TIME_POWER_LAW, the table data specify the following:

  • q 0 .

  • n .

  • m .

  • ⁢ ε 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.

Return value

A Creep object.

Exceptions

RangeError.

setValues(...)

This method modifies the Creep object.

Required arguments

None.

Optional arguments

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

Return value

None.

Exceptions

RangeError.

Members

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

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

ornl

An Ornl object.

potential

A Potential object.

Corresponding analysis keywords