3.1.5.24. Elastic Multi-Linear Material

This command constructs a multi-linear elastic uniaxial material defined by strain-stress points.

uniaxialMaterial ElasticMultiLinear $matTag <$eta> -strain $strainPoints -stress $stressPoints

Argument	Type	Description
$matTag	integer	unique material tag
$eta	float	optional damping tangent
-strain	string	flag followed by strain points (at least two)
$strainPoints	list float	strain values
-stress	string	flag followed by stress points (at least two)
$stressPoints	list float	stress values corresponding to the strain points

The material is path-independent: unloading and reloading follow the same multi-linear stress-strain curve.

Fig. 3.1.5.9 ElasticMultiLinear material stress-strain behavior.

Example

1. Tcl Code

uniaxialMaterial ElasticMultiLinear 1 -strain 0.0 0.01 0.02 -stress 0.0 30.0 35.0

2. Python Code

ops.uniaxialMaterial('ElasticMultiLinear', 1, '-strain', 0.0, 0.01, 0.02, '-stress', 0.0, 30.0, 35.0)

Code Developed by: Andreas Schellenberg