基于最大拉应力的陶瓷刀具切削可靠性  

DAMAGE RELIABILITY OF CERAMIC CUTTING TOOLS BASED ON THE MAXIMUN TENSILE STRESS

作　　者：樊宁[1] 艾兴[2] 邓建新[2] 高子辉 

机构地区：[1]山东工业大学机械工程学院,济南250061 [2]山东工业大学,济南250061 [3]济南光明机器有限公司

出　　处：《陶瓷学报》2001年第1期17-22,共6页Journal of Ceramics

基　　金：国家自然科学基金资助项目(编号:59805012);山东省自然科学基金资助项目(编号:097F09115)

摘　　要：陶瓷刀具的切削可靠性在生产实际中具有重大意义。基于Ｗｅｉｂｕｌｌ可靠性理论，以最大拉应力准则为破损失效判据，本文给出了计算陶瓷刀具切削可靠性的两种方法──解析法和有限元法。计算实例证明，利用解析方法可以较为迅速的得到相应切削条件下的可靠度但精度稍差；有限元方法可以较为准确的计算刀具的可靠性。reliability of ceramic cutting tools is very important in manufacturing production. Based on the Weibull reliablity theories and taking the maximum tensile stress principle as damage criterion, two kinds of methods for calculating the cutting reliability are proposed here which are analytical method and finite element method respectively. It is proved by the calculation that the cutting reliability can be quickly acquired by analytical method, but the precision is not so perfect. So long as the model is properly established, the finite element method can compute the cutting reliability more accurately than the analytical method.

关 键 词：陶瓷刀具 可靠性 Weibull分布 

分 类 号：TQ174.5[化学工程—陶瓷工业]