A 3D model of the cyclic thermomechanical behavior of shape memory alloys |
| |
Authors: | Wael Zaki |
| |
Institution: | Unité de Mécanique, École Nationale Supérieure de Techniques Avancées, 91761 Palaiseau, France |
| |
Abstract: | The model in the first part of this paper is extended to account for SMA behavior under cyclic loading. To this end, three new state variables are introduced: internal stress B, residual strain ?r and cumulated martensite volume fraction ze. Several parameters of the extended model depend on ze, making them evolve with cyclic phase change. Cyclic SMA effects including training and two-way shape memory are accounted for and several numerical simulations are provided and validated in the case of cyclic superelasticity. |
| |
Keywords: | Cyclic loading Training Two-way shape memory Residual strain Internal stress |
本文献已被 ScienceDirect 等数据库收录! |
|