ContactStd object

The ContactStd object defines the contact domain and associated properties during contact in an Abaqus/Standard analysis.

The ContactStd object is derived from the Interaction object.

This page discusses:

Access
ContactStd(...)
ContactStd(...)
Members
Corresponding analysis keywords

Access

import interaction
mdb.models[name].interactions[name]

ContactStd(...)

This method creates a ContactStd object.

Path

mdb.models[name].ContactStd

Required arguments

name: A String specifying the repository key.
createStepName: A String specifying the name of the step in which this contact interaction is created.

Optional arguments

useAllstar: A Boolean specifying whether the contacting surface pairs consist of all exterior faces in the model.
globalSmoothing: A Boolean specifying whether surface smoothing (geometric correction) is automatically applied to all eligible surfaces. The default value is ON.
includedPairs: A RegionPairs object specifying the domain pairs included in contact.
excludedPairs: A RegionPairs object specifying the domain pairs excluded from contact.
contactPropertyAssignments: A ContactPropertyAssignment object specifying the contact property assignments in the contact domain.
surfaceThicknessAssignments: A SurfaceThicknessAssignment object specifying the surface thickness assignments in the contact domain.
surfaceOffsetAssignments: A SurfaceOffsetAssignment object specifying the surface offset fraction assignments in the contact domain.
surfaceFeatureAssignments: A SurfaceFeatureAssignment object specifying the surface feature angle assignments in the contact domain.
surfaceBeamSmoothingAssignments: A SurfaceBeamSmoothingAssignment object specifying the surface beam smoothing assignments in the contact domain.
surfaceVertexCriteriaAssignments: A SurfaceVertexCriteriaAssignment object specifying the surface vertex criteria assignments in the contact domain.
mainSecondaryAssignments: A MainSecondaryAssignment object specifying the main-secondary assignments in the contact domain.
initializationAssignments: An InitializationAssignment object specifying the contact initialization assignments in the contact domain.
stabilizationAssignments: A StabilizationAssignment object specifying the contact stabilization assignments in the contact domain.
smoothingAssignments: A SmoothingAssignment object specifying the surface smoothing assignments in the contact domain.
slidingTransitionAssignments: A SlidingTransitionAssignment object specifying the sliding transition assignments in the contact domain.
slidingFormulationAssignments: A SlidingFormulationAssignment object specifying the sliding formulation assignments in the contact domain.

Return value

A ContactStd object.

Exceptions

None.

ContactStd(...)

This method creates a ContactStd object.

Path

mdb.models[name].ContactStd

Required arguments

name: A String specifying the repository key.
createStepName: A String specifying the name of the step in which this contact interaction is created.

Optional arguments

globalSmoothing

A Boolean specifying whether surface smoothing (geometric correction) is automatically applied to all eligible surfaces. The default value is ON.

surfaceBeamSmoothingAssignments

A sequence of tuples specifying the surface beam smoothing assignments. Each tuple contains two entries:

A region object specifying the surface to which the smoothing is assigned.
A Float specifying the surface smoothing value to be used for the surface.

surfaceVertexCriteriaAssignments

A sequence of tuples specifying the surface vertex criteria assignments. Each tuple contains two entries:

A region or a material object or the SymbolicConstant GLOBAL specifying the surface to which the vertex criteria is assigned.
A Float or a SymbolicConstant specifying the vertex criteria value to be used for the surface. Possible values of the SymbolicConstant are ALL_VERTICES or NO_VERTICES.

slidingFormulationAssignments

A sequence of tuples specifying the sliding formulation assignments. Each tuple contains two entries:

A region object or the SymbolicConstant GLOBAL specifying the surface to which the sliding formulation attribute is assigned.
A SymbolicConstant specifying the overriding the smoothness value to be used for the first surface. Possible values of the SymbolicConstant are NONE and SMALL_SLIDING.

useAllstar

A Boolean specifying whether the contacting surface pairs consist of all exterior faces in the model.

includedPairs

A sequence of pairs of Region objects or SymbolicConstants that specifies the surface pairs in contact. Possible values of the SymbolicConstants are ALLSTAR and SELF. This argument is valid only when useAllstar=OFF.

excludedPairs

A sequence of pairs of Region objects or SymbolicConstants that specifies the surface pairs excluded from contact. Possible values of the SymbolicConstants are ALLSTAR and SELF.

contactPropertyAssignments

A sequence of tuples specifying the properties assigned to each surface pair. Each tuple contains three entries:

A Region object or the SymbolicConstant GLOBAL.
A Region object or the SymbolicConstant SELF.
A String specifying an InteractionProperty object associated with this pair of regions.

surfaceFeatureAssignments

A sequence of tuples specifying the surface feature angle assignments in the contact domain. Each tuple contains two entries:

A region object or the SymbolicConstant GLOBAL specifying the surface to which the surface feature angle is assigned.
A Float or a SymbolicConstant specifying the overriding feature angle value to be used in the contact definition. Possible values of the SymbolicConstant are PERIMETER or NONE.

surfaceThicknessAssignments

A sequence of tuples specifying the surface thickness assignments in the contact domain. Each tuple contains three entries:

A region object or the SymbolicConstant GLOBAL specifying the surface to which the surface thickness is assigned.
A Float or a SymbolicConstant specifying the overriding thickness value to be used in the contact definition. The SymbolicConstant ORIGINAL may be specified instead of a floating point value.
A Float specifying a scale factor that multiplies the thickness value specified in the second entry.

surfaceOffsetAssignments

A sequence of tuples specifying the surface offset fraction assignments in the contact domain. Each tuple contains two entries:

A region object or the SymbolicConstant GLOBAL specifying the surface to which the surface offset fraction is assigned.
A Float or a SymbolicConstant specifying the offset fraction value to be used in the contact definition. Possible values of the SymbolicConstant are ORIGINAL, SPOS, or SNEG.

mainSecondaryAssignments

A sequence of tuples specifying main-secondary assignments in the contact domain. Each tuple contains three entries:

A region object or the SymbolicConstant GLOBAL specifying the first surface that defines the main-secondary assignment.
A region object specifying the second surface in the main-secondary assignment definition.
A SymbolicConstant specifying the status of the first surface. Possible values are MAIN, SECONDARY, and BALANCED.

initializationAssignments

A sequence of tuples specifying the contact initialization data assigned to each surface pair. Each tuple contains three entries:

A Region object or the SymbolicConstant GLOBAL.
A Region object or the SymbolicConstant SELF.
A String specifying a StdInitialization object associated with this pair of regions.

stabilizationAssignments

A sequence of tuples specifying the contact stabilization assigned to each surface pair. Each tuple contains three entries:

A Region object or the SymbolicConstant GLOBAL.
A Region object or the SymbolicConstant SELF.
A String specifying a StdStabilization object associated with this pair of regions.

smoothingAssignments

A sequence of tuples specifying the surface smoothing assignments in the contact domain. Each tuple contains two entries:

A region object specifying the surface to which the smoothing option is assigned.
A SymbolicConstant specifying the smoothing option to be used in the contact definition. Possible values of the SymbolicConstant are NONE, REVOLUTION, SPHERICAL, or TOROIDAL.

slidingTransitionAssignments

A sequence of tuples specifying sliding transition assignments in the contact domain. Each tuple contains three entries:

A region object or the SymbolicConstant GLOBAL specifying the first surface that defines the sliding transition assignment.
A region object specifying the second surface in the sliding transition assignment definition.
A SymbolicConstant specifying the smoothness value. Possible values are ELEMENT_ORDER_SMOOTHING, LINEAR_SMOOTHING, and QUADRATIC_SMOOTHING.

Return value

A ContactStd object.

Exceptions

None.

Members

The ContactStd object can have the following members:

name: A String specifying the repository key.
globalSmoothing: A Boolean specifying whether surface smoothing (geometric correction) is automatically applied to all eligible surfaces. The default value is ON.
includedPairs: A RegionPairs object specifying the domain pairs included in contact.
excludedPairs: A RegionPairs object specifying the domain pairs excluded from contact.
contactPropertyAssignments: A ContactPropertyAssignment object specifying the contact property assignments in the contact domain.
surfaceThicknessAssignments: A SurfaceThicknessAssignment object specifying the surface thickness assignments in the contact domain.
surfaceOffsetAssignments: A SurfaceOffsetAssignment object specifying the surface offset fraction assignments in the contact domain.
mainSecondaryAssignments: A MainSecondaryAssignment object specifying the main-secondary assignments in the contact domain.
initializationAssignments: An InitializationAssignment object specifying the contact initialization assignments in the contact domain.
stabilizationAssignments: A StabilizationAssignment object specifying the contact stabilization assignments in the contact domain.
smoothingAssignments: A SmoothingAssignment object specifying the surface smoothing assignments in the contact domain.
surfaceFeatureAssignments: A SurfaceFeatureAssignment object specifying the surface feature angle assignments in the contact domain.
slidingTransitionAssignments: A SlidingTransitionAssignment object specifying the sliding transition assignments in the contact domain.
assignEdgeToEdgeformulation: A Boolean specifying whether to assign the edge-to-edge formulation. The default value is False.
edgeToEdgeFormulation: A symbolic constant specifying edge-to-edge formulation. The default value is NO.

Corresponding analysis keywords

CONTACT