Afternoon Folks,

I am doing to FEA analysis on rolled steel W-Shapes (also known as I-beams) in axial compression. I am wondering if there is a simple way to include residual stresses in the cross section. I thought about trying to emulate the stresses using some sort of temperature gradients, but my feeling is there must be an easier way.

I've includeda picture to illustrate the stresses that are created by hot rolling, for those who may not be familiar with hot-rolled structural shapes.

Thanks very much.

-Andrew

I suppose you could try adding some loads to impart the residual stress distribution though that may not be all that simple. The way it is typically done is to conduct a manufacturing simulation to obtain the distribution in an NL analysis and use that as the start in a subsequent analysis step. Another option maybe to use the pressure vessel study: do an analysis that produces the residual stress and another with the service loads and use the pressure vessel study to combine the results with one of the available methods.