An integrated finite element-based model is presented for the prediction of the steady-state thermomechanical behavior of the roll-strip system and of roll life in hot strip rolling. The model is comprised of basic finite-element models, which are incorporated into an iterative-solution procedure to deal with the interdependence between the thermomechanical behavior of the strip and that of the work roll, which arises from roll-strip contact, as well as with the interdependence between the thermal and mechanical behavior. Comparison is made between the predictions and the measurements to assess solution accuracy. Then, the effect of various process parameters on the detailed aspects of thermomechanical behavior of the work roll and on roll life is investigated via a series of process simulations.

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Power consumption and dissipation during electrical operation lead to a temperature rise in the package. Elevated temperature in the package structure induces thermo-mechanical stresses which may increase reliability risks. Robust and reliable package design for power systems requires comprehensive analysis of system electrical, thermal, and mechanical behavior. This paper presents a self-consistent approach for package reliability analysis with coupled electro-thermal and thermo-mechanical modeling using TCAD tools.

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