含柔性连杆的曲柄滑块机构动力学分析与实验研究

Dynamic Analysis and Experimental Study on Crank Slider Mechanism with Flexible Connecting Rod

为了研究柔性连杆、带有固体润滑涂层MoS_2的铰链接触副对含间隙铰链机构的动力学特性的影响规律,以曲柄滑块机构为研究对象,使用Adams软件进行数值仿真分析,研究了柔性连杆材料、铰链间隙、铰链接触副材料和铰链接触副表面固体润滑涂层对曲柄滑块机构动力学特性的影响。通过搭建与数值仿真参数一致的含间隙铰链的曲柄滑块试验台,试验验证了柔性大的连杆、较小的间隙值、接触刚度较小的接触副材料能够减小机构的振动,带有涂层的铰链能够有效减小接触面的磨损量。试验结果和数值仿真结果较为一致,能够有效的反应各种工况对含间隙机构的影响规律,为固体润滑涂层在航天领域中含间隙铰链接触副展开机构的减振抗冲击研究提供理论基础和试验依据。

In order to study the influence of the flexible connecting rod and hinge contact pair with solid lubrication coating MoS 2 on the dynamic characteristics of the hinge mechanism with clearance,the crank slider mechanism was taken as the research object,and Adams software was used for numerical simulation analysis.The influences of the flexible connecting rod material,hinge clearance,hinge contact pair material and solid lubrication coating on the surface of hinge contact pair on the dynamic characteristics of crank slider mechanism were studied.By setting up a crank slide test bench with clearance hinge,which is consistent with the numerical simulation parameters,the test proves that the vibration of the mechanism can be reduced by the flexible connecting rod,the smaller clearance value and the contact pair material with smaller contact stiffness,and the coated hinge can effectively reduce the wear of the contact surface.The experimental results are consistent with the numerical simulation results,which can effectively reflect the influence rule of the various working conditions on the mechanism with clearance,and provide theoretical basis and experimental basis for studying the solid lubrication coating in the aerospace field on the damping and impact resistance of the mechanism with clearance hinge contact pair.