Study on dynamic characteristics of central rigid body-shape memory alloy layer laminated functionally graded beam
The dynamic characteristics of a central rigid body-shape memory alloy laminated functionally graded beam system in a wide range of in-plane motion were explored in this study.For the SMA layer,the constitutive model of polynomial shape memory alloy and the assumed functionally graded distribution of the laminated part were adopted,considering the nonlinear coupling of trans-verse deformation causing longitudinal deformation.The SMA laminated FGM beam system is discretized by the assumed mode method,and the high order rigid-flexible coupling model of the system was derived by the Class II Lagrange equation,writing soft-ware programs for dynamic simulation.The effect of temperature on the dynamic characteristics of shape memory alloy layers under different functional grade,and the influence of increasing the thickness of SMA layer at different temperatures were studied.The re-sults show that temperature and thickness of SMA layer have great influence on the dynamic characteristics of the system.
万方数据
维普
