PointMassInertia object

The PointMassInertia object defines point masses and point rotary inertia on a part or an assembly region.

The PointMassInertia object is derived from the Inertia object.

The following topics are discussed:

Access

import part
mdb.models[name].parts[name].engineeringFeatures.inertias[name]
import assembly
mdb.models[name].rootAssembly.engineeringFeatures.inertias[name]

PointMassInertia(...)

This method creates a PointMassInertia object.

Path

mdb.models[name].parts[name].engineeringFeatures.PointMassInertia
mdb.models[name].rootAssembly.engineeringFeatures.PointMassInertia

Required arguments

name

A String specifying the repository key.

region

A Region object specifying the region to which the mass or rotary inertia is applied.

Optional arguments

mass

A Float specifying the mass magnitude for isotropic mass. This parameter cannot be specified when anisotropic mass terms are specified. The default value is 0.0.

mass1

A Float specifying the mass in the 1-direction for anisotropic mass. This parameter cannot be specified when isotropic mass is also specified. The default value is 0.0.

mass2

A Float specifying the mass in the 2-direction for anisotropic mass. This parameter cannot be specified when isotropic mass is also specified. The default value is 0.0.

mass3

A Float specifying the mass in the 3-direction for anisotropic mass. This parameter cannot be specified when isotropic mass is also specified. The default value is 0.0.

i11

A Float specifying the rotary inertia about the local 1-axis, I11. The default value is 0.0.

i22

A Float specifying the rotary inertia about the local 2-axis, I22. The default value is 0.0.

i33

A Float specifying the rotary inertia about the local 3-axis, I33. The default value is 0.0.

i12

A Float specifying the product of inertia, I12. The default value is 0.0.

i13

A Float specifying the product of inertia, I13. The default value is 0.0.

i23

A Float specifying the product of inertia, I23. The default value is 0.0.

localCsys

None or a DatumCsys object specifying the local coordinate system for the anisotropic mass terms (when specified), and the rotary inertia (when specified). If localCsys=None, the anisotropic mass and rotary inertia data are defined in the global coordinate system. The default value is None.

alpha

A Float specifying the alpha damping magnitude. The default value is 0.0.

This argument applies only to Abaqus/Standard analyses.

composite

A Float specifying the composite damping magnitude. The default value is 0.0.

This argument applies only to Abaqus/Standard analyses.

Return value

A PointMassInertia object.

Exceptions

None.

setValues(...)

This method modifies the PointMassInertia object.

Required arguments

None.

Optional arguments

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

Return value

None.

Exceptions

None.

Members

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

In addition, the PointMassInertia object has the following member:

suppressed

A Boolean specifying whether the inertia is suppressed or not. The default value is OFF.

Corresponding analysis keywords