摘要
针对磁流变液在高温下性能下降的缺点,提出了圆锥式磁流变与形状记忆合金复合传动方法。基于Bingham模型,描述了磁流变液的流变特性;基于形状记忆合金的热效应特性,分析了温度对形状记忆合金弹簧输出力的影响;建立了圆锥式磁流变与形状记忆合金复合传动传递转矩方程,揭示了其传动机理。研究结果表明,圆锥式磁流变传动随锥角的增大,其传递转矩减小;在保证磁场强度和传动半径相同的情况下,圆锥式磁流变比圆盘磁流变传递的转矩更大;在高温下,形状记忆合金弹簧驱动的滑块所产生的摩擦转矩可以弥补磁流变液性能下降,保证传动装置的传动性能稳定性。
In view of the disadvantage of magnetorheological fluid(MRF) performance degradation at high temperature, a conical MRF and shape memory alloy(SMA) hybrid transmission method is proposed. Based on the Bingham model, the rheological properties of MRF are described, and based on the thermal effect of shape memory alloy, the influence of temperature shape memory alloy spring output force is analyzed. The transfer torque equation of conical magnetorheological and SMA composite drive is established, and its driving mechanism is revealed. The results show that the transmission torque of conical magnetorheological drive decreases with the increase of conical angle. The torque transmitted by conical magnetorheological method is larger than that by disc magnetorheological method under the same magnetic field strength and transmission radius. The friction torque produced by the slider driven by SMA spring at high temperature can compensate for the deterioration of MRF performance and ensure the stable transmission performance of the transmission device.
作者
王西
黄金
谢勇
Wang Xi;Huang Jin;Xie Yong(College of Mechanical Engineering,Chongqing University of Technology,Chongqing 400054,China)
出处
《机械传动》
北大核心
2019年第8期36-40,共5页
Journal of Mechanical Transmission
基金
国家自然科学基金(51875068)
