The Linear Elastic Material node adds the equations for a linear elastic truss element, and an interface for defining the elastic material properties.

By adding the following subnodes to the Linear Elastic Material node you can incorporate many other effects:

Define the linear elastic material properties. These settings are the same as described under Linear Elastic Material for the beam interface.

In this section there is always one check box. Either Geometrically linear formulation or Include geometric nonlinearity is shown.

If a study step is geometrically nonlinear, the default behavior is to use a large strain formulation for all boundaries or edges. There are however some cases when you would still want to use a small strain formulation in a part of the structure. In those cases, select the Geometrically linear formulation check box. When selected, a small strain formulation is always used, independently of the setting in the study step. The default value is that the check box is cleared, except when opening a model created in a version prior to 4.3.

Select the Calculate dissipated energy check box as needed to compute the energy dissipated by Plasticity.

Physics tab with Truss selected: