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Computational modeling of material aging effects

Question asked by Igor Isayev on Jun 21, 2010
Latest reply on Jun 24, 2010 by Anthony Botting

Recently I've been asked about a possibility to predict the aging effect for simple bolt joint. There are some dissimilar material used in the joint like copper alloy 182 for a bolt  and carbon steel for a nut. I'm pretty sure that there will be some deformation on the copper part due to applied torque and additional vibration loads during the life cycle. So, initial snapshot for the stress or deformation will be different in a week, or in month, or even in years. If this is very important joint in assembly , is there any way to simulate the material / joint aging effects in SW simulation ? Or is there  3-rd party CAE software to deal with such effects ?