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Ramping initial stress in Membrane elements

Submitted by ashwin_blj on

Hi,

I am doing an explicit analysis, i am trying to model a woven fabric structure. I have to pre-stress the fabric so i have used this option. 



*AMPLITUDE, NAME=name

*SECTION CONTROLS, RAMP INITIAL STRESS=name



Details from INP file



*Membrane Section, controls = SC, elset=FABRIC, material=FABRIC

0.5,



*AMPLITUDE, NAME = RampStress, DEFINITION = Smooth Step,time=total time

0.0, 0.0, 0.0025, 1.0, 1.0, 1.0



*SECTION CONTROLS,NAME=SC, RAMP INITIAL STRESS=RampStress

5.13



But stresses were not developing in the structure.

Any kind of help is much appreciated 

Thanks & Regards

Ashwin