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一、引言为解决工程结构的强度计算,需要进行应力分析。应力分析方法分为理论方法和实验方法两种。依靠理论方法,目前虽然由于结构矩阵分析方法和有限元素法的应用,解决了过去用传统的方法解决不了的问題,但不能完全解决复杂结构及另部件的强度计算问题,特别是应力集中问题。其次,用数值方法求得的解,需要通过实验验证才能定论。此外,由于工作环境及结构本身性状一般都带有随机性,因此,需要通过实验获得大量的统计资料作为分析的依据。所以,实验方法愈显得重要。应变计电测技术是用途最
I. INTRODUCTION To solve the engineering strength calculation, stress analysis is needed. Stress analysis method is divided into two theoretical methods and experimental methods. Relying on the theoretical method, although the problem solved by the traditional method can not be solved by using the method of structural matrix analysis and the finite element method at present, the problem of calculating the strength of the complicated structure and the other components can not be completely solved, especially the stress concentration problem. Second, the solution obtained by the numerical method needs to be verified through experiments. In addition, due to the random nature of the working environment and the traits of the structure itself, a large amount of statistical data needs to be obtained through experiment as the basis for analysis. Therefore, the experimental method is more important. Strain gauges are the most versatile