GeneralStiffnessSection object

The GeneralStiffnessSection object defines the properties of a shell section via the stiffness matrix.

The GeneralStiffnessSection object is derived from the ShellSection object.

This page discusses:

Access

import section
mdb.models[name].sections[name]
import odbSection
session.odbs[name].sections[name]

GeneralStiffnessSection(...)

This method creates a GeneralStiffnessSection object.

Path

mdb.models[name].GeneralStiffnessSection
session.odbs[name].GeneralStiffnessSection

Required arguments

name

A String specifying the repository key.

stiffnessMatrix

A sequence of Floats specifying the stiffness matrix for the section in the order D11, D12, D22, D13, D23, D33, ...., D66. Twenty-one entries must be given.

Optional arguments

referenceTemperature

None or a Float specifying the reference temperature for thermal expansion. The default value is None.

applyThermalStress

A Boolean specifying whether or not the section stiffness varies with thermal stresses. The default value is OFF.

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.

poissonDefinition

A SymbolicConstant specifying whether to use the default value for the Poisson's ratio. Possible values are:

  • DEFAULT, specifying that the default value for the Poisson's ratio is 0.5 in an Abaqus/Standard analysis and is obtained from the material definition in an Abaqus/Explicit analysis.

  • VALUE, specifying that the Poisson's ratio used in the analysis is the value provided in poisson.

The default value is DEFAULT.

poisson

A Float specifying the Poisson's ratio. Possible values are −1.0 ≤ poisson ≤ 0.5. This argument is valid only when poissonDefinition=VALUE. The default value is 0.5.

useDensity

A Boolean specifying whether or not to use the value of density. The default value is OFF.

density

A Float specifying the value of density to apply to this section. The default value is 0.0.

thermalStresses

A sequence of Floats specifying the generalized stress values caused by a unit temperature rise. Six entries must be given if the value of applyThermalStress is set to True. The default value is ("").

scalingData

A sequence of sequences of Floats specifying the scaling factors for given temperatures and/or field data. Each row should contain (Y, alpha, T, F1,...,Fn). The default value is an empty sequence.

Return value

A GeneralStiffnessSection object.

Exceptions

None.

setValues(...)

This method modifies the GeneralStiffnessSection object.

Required arguments

None.

Optional arguments

The optional arguments to setValues are the same as the arguments to the GeneralStiffnessSection method, except for the name argument.

Return value

None.

Exceptions

None.

Members

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

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

rebarLayers

A RebarLayers object specifying reinforcement properties.

transverseShear

A TransverseShearShell object specifying the transverse shear stiffness properties.