论文部分内容阅读
根据两球体单峰同时受法向、切向载荷时微滑切向应力的分布以及MB模型,给出了界面的总切向接触静弹性条件刚度、总条件法向载荷的解析解。将切向接触静弹性条件刚度的解析解嵌入到有限元软件中,获得了整机的理论模态。以一款八四七厂华中工学院XHK5140型自动换刀计算机数控立式镗铣床上的结合部为研究对象,通过实验对解析解进行了定量验证。研究结果表明:在理论振型与实验振型一致的条件下,界面模型的相对误差在-19.2%~16.8%之间。
According to the distribution of the microstrip shear stress and the MB model under both the normal direction of the single peak of the spheroid and the tangential load, the analytical solutions of the total tangential contact static elastic stiffness and the normal load under the total conditions are given. The analytic solution of tangential contact static elastic stiffness is embedded into the finite element software and the theoretical modal of the whole machine is obtained. With a section 847 Huazhong Institute of Technology XHK5140 automatic tool change CNC vertical boring and milling machine as the research object, the experimental quantitative analysis of the solution was verified. The results show that the relative error of the interface model is between -19.2% and 16.8% under the condition that the theoretical vibration mode and the experimental mode are the same.