热效应下形状记忆合金驱动的磁流变液与滑块摩擦复合传动研究  

Study on the Combined Magnetorheological Fluid and Sliding Block Friction Drive Driven by Shape Memory Alloy Under Thermal Effect

作　　者：黄金 谢勇 王西 姚华 HUANG Jin;XIE Yong;WANG Xi;YAO Hua(College of Mechanical Engineering,Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学机械工程学院

出　　处：《重庆理工大学学报（自然科学）》2019年第12期61-67,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目“电磁热形状记忆合金与磁流变液楔挤自加压复合传动机理及应用研究”(51875068)

摘　　要：针对磁流变液在高温下传力性能下降的情况,提出了热效应下形状记忆合金驱动的磁流变液和滑块摩擦复合传动方法。基于Bingham模型,介绍了磁流变液的流变特性;基于形状记忆合金的热弹性特性,分析了温度对形状记忆合金弹簧驱动位移和输出力的影响。分析了热效应下磁流变液工作体积与温度的关系,建立了热效应下形状记忆合金弹驱动的磁流变液和滑块摩擦复合传动转矩方程,并揭示了其传动机理。研究结果表明:当温度升高时,磁流变液传递转矩能力下降,但总装置传递的转矩基本保持一致,从而保持了装置传动的稳定性。In this paper,aiming at the case where the force transfer performance of magnetorheological fluids decreases at high temperature,the magnetorheological fluid and slider friction composite transmission method driven by shape memory alloy under thermal effect are proposed.Based on Bingham model,the rheology of magnetorheological fluid is introduced.Based on the thermoelastic properties of shape memory alloys,the effects of temperature on the displacement and output force of shape memory alloy springs were analyzed.The relationship between the working volume and temperature of magnetorheological fluids under thermal effect was analyzed.The torque transmission equation of composite transmission of magneto-rheological fluid and slider friction driven by shape memory alloy bomb under thermal effect was established,and its transmission mechanism was revealed.The research results show that when the temperature rises,the magneto-rheological fluid transmission torque capacity decreases,but the torque transmitted by the total device keeps a similar level,thus maintaining the stability of the device transmission.

关 键 词：磁流变液 形状记忆合金 复合传递转矩 

分 类 号：O361.3[理学—流体力学]