【摘要】 运动副间隙不可避免的存在于机械系统中,且随着摩擦磨损其尺寸不断变大,导致系统运动学和动力学性能的渐变恶化。基于三维建模软件SolidWorks和虚拟仿真软件ADAMS,建立含运动副间隙的平面机构模型,进行动力学仿真。并且考虑运动副处的摩擦磨损,对ADAMS仿真数据进行后处理,通过Matlab离线计算运动副磨损量,得到时变的运动副间隙尺寸。将磨损后的运动副尺寸更新到ADAMS模型仿真,进而得到机构运动精度的渐变过程。结果表明,运动副磨损区域非均匀分布,机构运动精度及动态性能随运行时间逐渐恶化。更多还原

【Abstract】 Joint clearances are unavoidable in real mechanical systems,and they will become larger because of the friction and wear,leading to the kinemics and dynamics of the system become worse gradually. Based on the 3D modeling software Solid Works and the virtual simulation software ADAMS,a planar mechanism with joint clearance is built,and dynamic simulations are done. Further more,the friction and wear of the joint are taken into consideration,the wear depth is calculated by the Matlab offline using the data obtained from ADAMS,the time-varying joint clearances are then obtained. In return,the updated joint clearances are imported into the ADAMS model,thus the changes of the moving accuracy of the mechanism are observed. The results show that,the wearing regions of the clearance joint are nonuniformly distributed,the moving accuracy and dynamic performance of the mechanism are gradually worse with the time.更多还原