注塑件残余应力的载荷测量法  

Loading Measurement Method for Residual Stresses of Injection-Molded Part

作　　者：刘红[1] 蒋兰芳[2] 陈先立[1] 

机构地区：[1]浙江工业大学机械工程学院,杭州310014 [2]浙江工业大学之江学院,杭州310024

出　　处：《上海交通大学学报》2016年第2期241-245,250,共6页Journal of Shanghai Jiaotong University

基　　金：浙江省自然科学基金项目(LQ13A020003);中国博士后科学基金项目(2014M561786)资助

摘　　要：基于线性迭加原理提出了一种非破坏性的表面残余应力测量方法——载荷测量法,通过以一定的方式在注塑件上施加载荷来检测表面测点的应变,并计算出注塑件的加载应力和残余应力.结果表明:与工程上常用的钻孔法及剥层法相比,载荷测量法具有不破坏被测构件且检测成本较低的优点;在保证被测构件的受力状态处于弹性范围内的基础上,所提出的载荷测量法具有足够的检测精度.Based on the principle of linear superposition,a non-destructive measurement for residual stresses,i.e.the loading measurement method for residual stresses was proposed.In a certain way,it applies loads on the injection-molded part,measures the strain on the surface measuring points,and calculates the loading stresses and residual stresses on the measuring points of the injection-molded part.The results show that the loading measurement method has advantages over the hole drilling method and the layer removal method because it has a comparatively lower measuring cost,and it is precise when the loading state of the measured part is under the elastic range.

关 键 词：注塑件 残余应力 有限元法 载荷测量法 

分 类 号：TQ347.3[化学工程—化纤工业]