一种新型引磁式磁流变阻尼器研究  

New magneto-inducible magnetorheological damper

作　　者：王成龙[1] 吴鲁杰 魏学谦 曾庆良[1] WANG Chenglong;WU Lujie;WEI Xueqian;ZENG Qingliang(School of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Jinan uniview Intelligent Technology Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590 [2]济南宇视智能科技有限公司,济南250014

出　　处：《振动与冲击》2024年第10期248-259,共12页Journal of Vibration and Shock

基　　金：国家自然科学基金(51974170),国家自然科学基金(52274132);山东省重点研发计划(重大科技创新工程)项目(2020CXGC011502)。

摘　　要：针对特定结构限制下磁流变阻尼器工作性能的优化问题,在传统磁流变阻尼器的基础上设计了一种新型引磁式磁流变阻尼器,建立了磁场与流场耦合动力学模型;以输出阻尼力和动态可调系数为优目标函数,基于多目标遗传算法对该型磁流变阻尼器内部活塞进行了优化;建立了多物理场耦合模型并进行了仿真和冲击试验。仿真结果表明:在相同外形尺寸条件下,新型磁流变阻尼器的有效阻尼通道长度为64 mm,相比普通磁流变阻尼器提高了60%;新型磁流变阻尼器的力学特性与动态可调性更加优越,当施加2.0 A电流、活塞运动速度为0.09 m/s时,新型磁流变阻尼器的输出阻尼力为55.9 kN,相比普通磁流变阻尼器(32.4 kN)提高了72.5%;施加不同大小电流时新型磁流变阻尼器的峰值压力与吸能容量均明显高于普通磁流变阻尼器。冲击试验结果表明:当施加2.0 A的电流、冲击速度为2.45 m/s时,相比普通磁流变阻尼器,其峰值压力达到11.64 MPa、峰值压力提高约41%。峰值压力试验结果与仿真结果对比表明:仿真结果和试验结果的趋势是一致的,其相对误差在0.1之内,表明了仿真模型的有效性。A new magneto-inducible magnetorheological(MR)damper was proposed on the basis of the conventional MR damper to solve the problem that the performance of the traditional MR damper was limited in certain size of structures,and the coupling dynamics model of the magnetic field and the flow field was established.Taking the damping force and the dynamic adjustable coefficient as the optimization objective functions,the structure size of internal piston of the new MR damper was optimized based on the multi-object genetics algorithm(MOGA).On this basis,a multi-physical fiold coupling model was established,and simulation and impact tests were carried out.The simulation results show that the length of the effective damping channel of the new MR damper is 64 mm,which is 60%longer than that of the ordinary MR damper.The mechanical properties and dynamic adaptability of the new MR damper are superior.When 2.0 A current is applied and the piston speed is 0.09 m/s,the damping force of the new MR damper is 55.9 kN,which is 72.5%higher than that of the ordinary MR damper(32.4 kN).The peak pressure and energy absorption capacity of the new MR damper are obviously higher than those of the ordinary one when different amounts of current are applied.The impact test results show that the peak pressure reaches 11.64 MPa,when 2.0 A current is applied and the impact velocity is 2.45 m/s,which is about 41%higher than that of the ordinary MR damper.The comparison between the peak pressure test results and the simulation results show that the trends of the simulation results and the test results are consistent,and the relative error is within 0.1,which indicates the effectiveness of the simulation model.

关 键 词：磁流变液 磁流变阻尼器 多物理场耦合 冲击试验 

分 类 号：TH137[机械工程—机械制造及自动化]