动光弹实验中的主应力分离方法

Separation of Principal Stress in Dynamic Photoelastic Experiment

动态光弹性是研究应力波传播的一个有效工具 ,已广泛地应用于工程实际 ,在对动光弹实验资料进行分析时 ,如何得到应力场的定量结果 ,即对主应力进行分离 ,是需要解决的关键问题之一。综述了目前动光弹主应力分离的各种方法和研究现状 ,并提出了与弹性理论相结合的主应力分离法 ,不仅使主应力的分离得到简化 。

Dynamic photoelasticity is an effective tool for stress wave propagation study,and is widely applied in engineering practice. Separation of principal stress is the key and difficult point of data analysis. In this paper, many solutions to this problem are introduced, and the method combined with elastic mechanics is particularly emphasized. Some analysis results on concrete examples are obtained.