Models of martensitic transformation in shape-memory alloys
Models of shape-memory alloys are associated with a continuum-mechanical description of the stored energy (having a multi-well character giving rise to microstructures) and of the dissipated energy (giving rise to hysteresis in stress/strain response). The multi-well stored energy is related to austenite and particular martensitic variants. The dissipation potential has a homogeneous degree-1 term, corresponding to (possibly rate-independent) activated processes. The configuration can be described either conventionally in terms of mere displacements or by displacements combined with special gradient Young measures to reflect better a multiscale character of the problem. Basic mathematical and numerical analysis accompany both sort of models. Isothermal computational 3D simulations with NiMnGa or CuAlNi single crystals were done by such models. Anisothermal extension are possible in the former class of models. Selected preprints are available at http://www.karlin.mff.cuni.cz/～roubicek/multimat.htm
Tom(a)(s) Roub(i)(c)ek
Mathematical Institute, Charles University, Sokolovsk(a) 83, CZ-186 75 Praha 8, Czech Republic; Institute of Information Theory and Automation, Academy of Sciences,Pod vod(a)renskou v(e)(z)(i) 4, CZ-182 08 Praha 8, Czech Republic
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1584-1591
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）