2010
Conference article  Closed Access

Thermo-mechanical analysis of 3-d multilayer structures for power electronic devices

Bagnoli P. E., Girardi M., Padovani C., Pagni A., Pasquinelli G.

Finite element method  Electronic devices  Multilayer structures  Physical Sciences and Engineering  Thermomechanical analysis 

An integrated simulation tool for multilayer stepped pyramidal structures, able to calculate the temperature distributions and thermal stresses at the interfaces between the layers and based on a semi-analytical mathematical strategy is presented. The core of the thermal solver is the analytical simulator DJOSER for power electronic devices. DJOSER is then integrated with a mechanical solver based on the finite element method. A new element is proposed whose geometry is defined by its mean surface and thickness, just like in a plate, and whose mechanical behaviour is fully three-dimensional, in the sense that the deformability in the direction orthogonal to the mean surface is taken into account. The dedicated finite element code developed for solving the equilibrium problem of structures made up of two or more superimposed plates subjected to thermal loads is applied to some two-layer samples made of silicon and copper. The comparisons with the results of standard finite element analyses using a large number of brick elements are presented and discussed. © 2010 IEEE.

Source: Third International Conference on Thermal Issues in Emerging Technologies - Theory and Applications, pp. 69–75, Cairo, Egitto, 19-22 December 2010

Publisher: IEEE, New York, USA


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BibTeX entry
@inproceedings{oai:it.cnr:prodotti:92047,
	title = {Thermo-mechanical analysis of 3-d multilayer structures for power electronic devices},
	author = {Bagnoli P.  E. and Girardi M. and Padovani C. and Pagni A. and Pasquinelli G.},
	publisher = {IEEE, New York, USA},
	doi = {10.1109/theta.2010.5766381},
	booktitle = {Third International Conference on Thermal Issues in Emerging Technologies - Theory and Applications, pp. 69–75, Cairo, Egitto, 19-22 December 2010},
	year = {2010}
}