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Material Curves

In most analysis no material curve needs to be defined, but for LS-DYNA analysis and for nonlinear springs material curves must be defined.

Definition​

Name

The name is only used as a convenient way of identifying a material (or spring) curve.

Type

The type defines the spring is translational or rotational.

Description

A table defining the force/displacement, moment/rotation, stress/strain relationship for a nonlinear material or spring.

Axis Value Type

This defines the dimension of the nonlinear spring curve and the available types are:

  • Force - Displacement: the spring is translational
  • Moment - Rotation: the spring is rotational

Data Table

The data table is used to define the data point on the material curve, it must be in ascending order. When the data table is used in analysis, if abscissa value is beyond the definition range, the ordinate value will be taken as zero, ordinate value beyond defined range is not allowed and it will not occur in the analysis.

Diagram

The diagram shows the curve of the nonlinear spring defined in the data table.