TangentialBehavior object

The TangentialBehavior object specifies tangential behavior for a connector friction behavior option.

This page discusses:

Access

import section
mdb.models[name].sections[name].behaviorOptions[i].tangentialBehavior
import odbSection
session.odbs[name].sections[name].behaviorOptions[i]\
.tangentialBehavior

TangentialBehavior(...)

This method creates a TangentialBehavior object.

Path

mdb.models[name].sections[name].behaviorOptions[i].TangentialBehavior
session.odbs[name].sections[name].behaviorOptions[i]\
.TangentialBehavior

Required arguments

None.

Optional arguments

formulation

A SymbolicConstant specifying the friction coefficient formulation. Possible values are PENALTY and EXPONENTIAL_DECAY. The default value is PENALTY.

slipRateDependency

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

pressureDependency

A Boolean specifying whether the data depend on contact pressure. 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 variables for the data. The default value is 0.

exponentialDecayDefinition

A SymbolicConstant specifying the exponential decay definition for the data. Possible values are COEFFICIENTS and TEST_DATA. The default value is COEFFICIENTS.

shearStressLimit

None or a Float specifying no upper limit or the friction coefficient shear stress limit. The default value is None.

maximumElasticSlip

A SymbolicConstant specifying the method for modifying the allowable elastic slip. Possible values are FRACTION and ABSOLUTE_DISTANCE. The default value is FRACTION.

This argument applies only to Abaqus/Standard analyses.

fraction

A Float specifying the ratio of the allowable maximum elastic slip to a characteristic model dimension. The default value is 10–4.

This argument applies only to Abaqus/Standard analyses.

absoluteDistance

None or a Float specifying the absolute magnitude of the allowable elastic slip. The default value is None.

This argument applies only to Abaqus/Standard analyses.

table

A sequence of sequences of Floats specifying the tangential properties. Items in the table data are described below. The default value is an empty sequence.

Table data

If formulation=PENALTY, the table data specify the following:

  • Friction coefficient in the slip direction, μ.

  • Slip rate, if the data depend on slip rate.

  • Contact pressure, if the data depend on contact pressure.

  • 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 formulation=EXPONENTIAL_DECAY and exponentialDecayDefinition=COEFFICIENTS, the table data specify the following:

  • Static friction coefficient, μs.

  • Kinetic friction coefficient, μk.

  • Decay coefficient, dc.

If formulation=EXPONENTIAL_DECAY and exponentialDecayDefinition=TEST_DATA, the table data specify the following:

  • Static coefficient of friction.

  • Dynamic friction coefficient measured at the reference slip rate, γ˙2.

  • Reference slip rate, γ˙2, used to measure the dynamic friction coefficient.

  • Kinetic friction coefficient, μ∞. This value corresponds to the asymptotic value of the friction coefficient at infinite slip rate, γ˙∞.

Return value

A TangentialBehavior object.

Exceptions

None.

setValues(...)

This method modifies the TangentialBehavior object.

Required arguments

None.

Optional arguments

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

Return value

None.

Exceptions

None.

Members

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

Corresponding analysis keywords