*MATNL

Data format:

One line with 4 parameters:

IMAT ITEN TREF SLOPE

Status :

Optional

Purpose :

To add tension dependancy on non-linear bending behavior law with hysteresis effect. The sliding moment is then function of tension : \(M_{sliding}=M_{sliding}^{init}\)+SLOPE*(Tension-TREF)

Restrictions :

A material property with non-linear bending behavior law with hysteresis effect must be previously defined with *MAT, specifically parameters CRITCURV, THETA and C

Details :

Parameter	Description
IMAT	Identification number of the material (previously defined with *MAT)
ITEN	=1: the sliding moment variation is computed as SLOPE(Tension-TREF) =2: the sliding moment variation is computed as SLOPE(Tension+PiAi-PeAe-TREF) where Pi, Pe are respectively the internal and external pressure and Ai, Ae respectively the internal and external area where pressure is applied
TEN	Reference tension (N)
SG	Slope of the moment variation N.m/N