hi arif, von mises stress is one which gives a generalised stress distribution on a surface which satisfy certain criteria called von mises conditions which defines some failure criterion. if for example you are trying to get the stress distribution on the surface of a substrate then you go for normal x and y stresses option(in hypermesh). i hope this helps. plz let me kno what kind of application u need stresses for. best regards, Rakesh Babu Graduate Research assistant Wayne state university. Arif.Hossain@asu.edu wrote: Hi everybody, Can anybody tell me what is von mises stress is. When doing ansys simulation, people see von mises stress to observe the stress in the material. But does exactly mean by von mises stress. Thanks, Arif _______________________________________________ MEMS-talk@memsnet.org mailing list: to unsubscribe or change your list options, visit http://mail.mems-exchange.org/mailman/listinfo/mems-talk Hosted by the MEMS Exchange, providers of MEMS processing services. Visit us at http://www.memsnet.org/ --------------------------------- Do you Yahoo!? Free Pop-Up Blocker - Get it now