vtkPointLoad

Section: Visualization Toolkit Imaging Classes

Usage

vtkPointLoad is a source object that computes stress tensors on a volume. The tensors are computed from the application of a point load on a semi-infinite domain. (The analytical results are adapted from Saada - see text.) It also is possible to compute effective stress scalars if desired. This object serves as a specialized data generator for some of the examples in the text.

To create an instance of class vtkPointLoad, simply invoke its constructor as follows

  obj = vtkPointLoad

Methods

The class vtkPointLoad has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, obj is an instance of the vtkPointLoad class.

string = obj.GetClassName ()
int = obj.IsA (string name)
vtkPointLoad = obj.NewInstance ()
vtkPointLoad = obj.SafeDownCast (vtkObject o)
obj.SetLoadValue (double ) - Set/Get value of applied load.
double = obj.GetLoadValue () - Set/Get value of applied load.
obj.SetSampleDimensions (int i, int j, int k) - Specify the dimensions of the volume. A stress tensor will be computed for each point in the volume.
obj.SetSampleDimensions (int dim[3]) - Specify the dimensions of the volume. A stress tensor will be computed for each point in the volume.
int = obj. GetSampleDimensions () - Specify the dimensions of the volume. A stress tensor will be computed for each point in the volume.
obj.SetModelBounds (double , double , double , double , double , double ) - Specify the region in space over which the tensors are computed. The point load is assumed to be applied at top center of the volume.
obj.SetModelBounds (double a[6]) - Specify the region in space over which the tensors are computed. The point load is assumed to be applied at top center of the volume.
double = obj. GetModelBounds () - Specify the region in space over which the tensors are computed. The point load is assumed to be applied at top center of the volume.
obj.SetPoissonsRatio (double ) - Set/Get Poisson's ratio.
double = obj.GetPoissonsRatio () - Set/Get Poisson's ratio.
obj.SetComputeEffectiveStress (int ) - Turn on/off computation of effective stress scalar. These methods do nothing. The effective stress is always computed.
int = obj.GetComputeEffectiveStress () - Turn on/off computation of effective stress scalar. These methods do nothing. The effective stress is always computed.
obj.ComputeEffectiveStressOn () - Turn on/off computation of effective stress scalar. These methods do nothing. The effective stress is always computed.
obj.ComputeEffectiveStressOff () - Turn on/off computation of effective stress scalar. These methods do nothing. The effective stress is always computed.