研磨
可靠性(半导体)
蒙特卡罗方法
刚度
材料科学
机械加工
一阶可靠性方法
灵敏度(控制系统)
控制理论(社会学)
结构工程
计算机科学
工程类
数学
统计
复合材料
功率(物理)
控制(管理)
量子力学
电子工程
人工智能
冶金
物理
作者
Wei Feng,Peng Qin,Le Cao,Cong Sun,Wei Li,Xiaofeng Cao
标识
DOI:10.1016/j.jmapro.2023.08.012
摘要
Cylindrical grinding is commonly used as the final process of machining, but its quality and efficiency are often limited by chatter phenomenon. Many research show that the result from conventional chatter analysis by using the deterministic parameters is not consistent with the practical working condition and the chatter reliability prediction in high speed cylindrical grinding with uncertain parameters is studied in this paper. The dynamic model of the cylindrical grinding system is established, and uncertain parameters such as mass, stiffness and damping coefficient are introduced, and the stability lobe diagrams with uncertain parameters were obtained. The reliability model of the grinding system was established, and the reliability was solved by using the Monte Carlo simulation method, the improved first-order second-moment method and the second-order second-moment method, respectively. Then, the chatter-free reliability of the system was predicted by using the reliability lobe diagram. The accuracy of the grinding reliability prediction results is verified by the experiment results. Furthermore, the Monte Carlo sensitivity analysis method is used to study the influence of random parameters on the grinding system, and the results show that the variation of modal mass has the greatest influence on the reliability of the grinding system.
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