welding residual stress ansys tutorial

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hi Some one give me example of finding residual stress in welding ..in ANys ..i did thermo mechanical welding ...but its representing stress field ...and i wanna know stresses are induced in the part even after the load iis removed some one give me an example ...of any process simulation ....of finding residual stress ..I only use Anys APDL ...Ansy workbench is fine too ,..please be elaborate ..or proceedin steps to find residual after doin thermo mech model