*MAT_S04 (SPRING_NONLINEAR_ELASTIC)

LS-DYNA Input Interface KeywordDefines a nonlinear elastic spring material.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*MAT_S04 or *MAT_SPRING_NONLINEAR_ELASTIC
mat_ID	LCL	LCR

Definition

Field	Contents	SI Unit Example
mat_ID	Material identifier. (Integer)
LCL	Curve identifier for force versus displacement or moment versus rotation. (Integer)	$\left[\frac{\text{N}}{\text{m}}\right]$ or $\left[\frac{\text{N}•\text{m}}{\text{rad}}\right]$
LCR	Curve identifier for the scale factor of force versus elongation velocity or moment versus rotational velocity. (Real)

Comments

1. This keyword maps to /MAT/LAW108 (SPR_GENE).
2. The option “_TITLE” can be added to the end of this keyword. When “_TITLE” is included, an extra 80 characters long line is added after the keyword input line which allows an entity title to be defined.