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目前对EQ6100发动机连杆采用电测法、光弹性试验法、有限元计算法进行静应力分析。为了研究一种新的测试方法,即在不制做昂贵的实物模具之前,先用简易木模浇铸出环氧树脂模型,再采用电测法进行表面应力分析,运用相似理论,可对试验结果进行对比分析。这样,只要设计的连杆单值条件与环氧树脂模型的单值条件满足几何相似、动力相似等相似条件,就可以对设计的连杆进行较准确的应力分析。因此用环氧树脂模型代替实物进行模型试验研究,具有显著的实用价值。
At present, the EQ6100 engine connecting rod adopts the electrical measurement method, the photoelasticity test method and the finite element method to carry on the static stress analysis. In order to study a new test method, that is, without making expensive physical mold, first with simple wood mold epoxy resin mold casting, and then using electrical measurement method for surface stress analysis, the use of similar theory, the test results For comparative analysis. In this way, as long as the single connecting rod condition and the single-valued condition of the epoxy resin model meet similar conditions such as geometric similarity and dynamic similarity, more accurate stress analysis can be performed on the designed connecting rod. Therefore, the epoxy resin model instead of in-kind model test research, has significant practical value.