摘要
利用形状记忆合金的超弹性和滞回耗能特性,研制一种兼具自复位、高耗能及放大功能于一体的形状记忆合金复合黏滞阻尼器(Hybrid Shape Memory Alloy Viscous Dampers,简称HSMAVD),并通过试验研究形状记忆合金复合黏滞阻尼器在循环荷载作用下的力学性能;同时,基于改进的Graesser&Cozzarelli模型和普通粘滞阻尼器力学模型,建立了形状记忆合金复合黏滞阻尼器的恢复力模型,并对其力学性能进行了仿真分析。研究结果表明:形状记忆合金与粘滞阻尼器复合后具有良好的协同工作能力,可有效发挥形状记忆合金的超弹性和粘滞阻尼器的速度相关特性,使其具有稳定的滞回性能和良好的耗能能力;仿真结果与试验结果吻合较好,验证了文中提出的恢复力模型的正确性,对形状记忆合金复合黏滞阻尼器的研发具有参考价值。
Through superelasticity hybrid shape memory alloy viscous and hysteretic energy dissipation properties of shape memory alloy, an innovative damper （HSMAVD） which possesses large energy dissipation, displacement am- plifying function and re-centering capabilities, is proposed. Cyclic tension-compression behavior of the hybrid shape memory alloy viscous damper has been tested. Based on the improved Graesser ＆ Cozzarelli constitutive equation and mechanical model of viscous damper, the restoring force model of hybrid shape memory alloys viscous damper is established, which are utilized to simulate the cyclic performance of the hybrid shape memory alloys vis- cous damper. The results show that shape memory alloy and viscous liquid in the compositive damper have a good ability to work together and can effectively make use of the super-elastic of the shape memory alloy and velocity-de- pendent of viscous damper. The HSMSVD has both stable hysteretic behavior and well energy dissipation capacity. The numerical results agree well with the experimental data, showing the validity of the proposed restoring model of the hybrid shape memory alloys viscous damper. The correctness of the proposed restoring force model is verified. There is a reference value for the similar damper design.
出处
《地震工程与工程振动》
CSCD
北大核心
2016年第6期72-78,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金面上项目(51678480)
陕西省教育厅专项科研项目(14JK1420)
西安建筑科技大学西部建筑科技重点实验室项目(K01343)
陕西省自然科学基础研究基金青年人才项目(2012JQ7018)~~
关键词
形状记忆合金
黏滞阻尼器
位移放大功能
仿真分析
恢复力模型
shape memory alloy
viscous damper
displacement amplifying function
simulation
restoring forcemodel
