2023.1

2023.1

*MAT_S03 (SPRING_ELASTOPLASTIC)

LS-DYNA Input Interface KeywordDefines an elasto-plastic spring material.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
MAT_S03 or MAT_SPRING_ELASTOPLASTIC
`mat_ID`	`K`	`KT`	`FY`

Definition

Field	Contents	SI Unit Example
`mat_ID`	Material identifier. (Integer, maximum 10 digits)
`K`	Linear stiffness. (Real)	$[\frac{N}{m}]$
`KT`	Harderning stiffness. (Real)	$[\frac{N}{m}]$
`FY`	Yield force or moment. (Real)	$[N]$ or $[Nm]$

Comments

This keyword maps to /MAT/LAW108 (SPR_GENE).
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.