摘要
针对磁流变阻尼器在实际使用中由于尺寸限制而无法输出足够阻尼力的问题,设计一种综合多种工作模式的新型磁流变阻尼器。首先进行阻尼器的结构设计,对阻尼器的工作模式进行介绍,并对所选用的磁流变液剪切屈服强度与磁感应强度曲线进行拟合。然后,利用Ansys Maxwell电磁仿真软件在不同工作模式下分别通入不同电流,来获得磁力线分布图以及磁感应强度分布图,来验证结构设计的合理性。最后,推导出基于剪切阀式工作模式下以及剪切挤压模式下的力学模型,并进行动力学仿真计算出阻尼器在不同模式下输出阻尼力大小。仿真结果表明:该磁流变阻尼器能达到设计的目的,随着电流的增加,液流通道内磁感应强度平均值可达到磁流变液最大屈服强度所对应的磁感应强度,可以很好的保证阻尼器的出力,设计的磁流变阻尼器结构设计合理,出力性能较好,可以在尺寸受限制但需要较大出力的场景上有着很好的应用。同时,该结构的工作模式较多可为此结构类型的磁流变阻尼器力学模型的建立提供参考。
A new kind of magnetic rheological damper is designed due to the size limitation.First,the structure of the damper design,the damper working mode is introduced,and the selected magnetic rheological fluid shear yield strength and magnetic induction strength curve fit,then,using Ansys Maxwell electromagnetic simulation software in different working mode into different current,to obtain the magnetic line distribution diagram and magnetic induction strength distribution diagram,to verify the rationality of the structure design.Finally,the mechanical model based on the shear valve operation mode and the shear extrusion mode is deduced to calculate the output damping force in different modes.The simulation results show that the MR damper can achieve the purpose of design.With the increase of the current,the average value of the maximum MR yield intensity can ensure the output of the damper,reasonable structure design,good output performance,and good application in scenarios with limited size but large output.
作者
郭富宝
刘彦辉
钟伟健
Guo Fubao;Liu Yanhui;Zhong Weijian(Earthquake Engineering Research&Test Center(EERTC),Guangzhou University,Guangzhou 510006,China;Key Laboratory of Earthquake Resistance and Absorption Engineering&Structure Safety of the Ministry of Education,Guangzhou University,Guangzhou 510006,China;Xi’an University of Architecture and Technology,Xi’an 710055,China)
出处
《土木工程学报》
EI
CSCD
北大核心
2022年第S01期132-138,共7页
China Civil Engineering Journal
基金
广东省自然科学基金(2021A1515010586)
国家重点研发计划重点专项(2016YFE0127600)
