注塑件残余应力的载荷测量法

摘要/Abstract

摘要： 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.

关键词: 注塑件, 残余应力, 有限元法, 载荷测量法

Abstract: Abstract： 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.

Key words: Key words： injectionmolded part, residual stress, finite element method, loading measurement method

中图分类号:

TQ 347.3

刘红1，蒋兰芳2，陈先立1. 注塑件残余应力的载荷测量法[J]. 上海交通大学学报（自然版）, 2016, 50(02): 241-245.

LIU Hong1,JIANG Lanfang2,CHEN Xianli1. Loading Measurement Method for Residual Stresses of InjectionMolded Part [J]. Journal of Shanghai Jiaotong University, 2016, 50(02): 241-245.

参考文献

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