LS-DYNA Stress Output
LS-DYNA Stress Output
(OP)
Hi,
are the stresses output by LS-DYNA for example via a fringe plot or a graph by ASCII Element output engineering stresses or true stresses?
The stresses are always described as "effective stress" but I'm not sure wether they are engineeringe stress or true stress
Many thanks in advance!
Best regards,
Leibi
are the stresses output by LS-DYNA for example via a fringe plot or a graph by ASCII Element output engineering stresses or true stresses?
The stresses are always described as "effective stress" but I'm not sure wether they are engineeringe stress or true stress
Many thanks in advance!
Best regards,
Leibi





RE: LS-DYNA Stress Output
In some material models you have to input engineering stress-strain curves instead of true stress-strain curve. For the most part its true stress/strain.
RE: LS-DYNA Stress Output
I did some calculations.
The strain ouput by ELOUT via ASCII is engineering strain.
I calculated the engineering strain based on the node displacement and the calculated strain fits perfect to the curve plotted by ELOUT.
For the strainrate output LS-DYNA calculates the true strain and derives the strain rate from the true strain, so the plotted strain rate can be used directly since based on the true strain.
The stress output via ELOUT is true stress, I verified that.
Thanks!!!
Regards,
Leibi