摘要
基于形状记忆合金热效应下的形状记忆特性和磁流变液的流变特性,介绍了形状记忆合金控制的磁流变液无级传动的工作原理;建立了能控制励磁线圈电流大小的形状记忆合金温控开关输出行程与温度、结构参数、材料参数、工作载荷等参数之间的关系式;基于Herschel-Bulkley模型描述了磁流变液剪切应力随外加磁场变化的本构方程;建立了磁流变液无级传动的传递转矩与磁场参数、材料参数、尺寸参数和运动参数之间的关系式。研究结果表明:形状记忆合金温控开关的输出行程随温度的变化而变化,磁流变液无级传动的传递转矩随外加磁场的增大而增大,输出转速能根据来自散热器气流温度的高低实现连续调整。
Based on the shape memory effect of shape memory alloy under thermal effect and the rheological behavior of magnetorheological fluid,the relationships of the shape memory alloy temperature detect switch＇ s output displacement with the temperature, the geometric parameters, the material parameters and the operating load was established. The shape memory alloy temperature detect switch was used to control the current that induced magnetic field. The Herschel-Bulkley model was used to describe the constitutive characteristics of magnetorheological fluid subjected to an applied magnetic field to derive the relationships of the magnetorheological fluid transmission torque with the magnetic field parameters, the magnetorheological fluid material parameters, the size parameters and the motion parameters. The results indicate that the output displacement of the shape memory alloy temperature detect switch can change rapidly with the temperature. The torque transmitted by magnetorheo- logical fluid goes up rapidly with the increase of the applied magnetic field strength and the output angular velocity can be adjusted continuously by the air temperature from radiator.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第5期599-603,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51175532)
重庆市科委自然科学基金资助项目(2011BA4028)
关键词
形状记忆合金
磁流变液
温控开关
无级传动
shape memory alloy
magnetorheological fluid
temperature detect switch
stepless transmission
