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一、前言在生产建设和工程实践中,不断提出应力分析的新课题。以往对工程上的新型结构和机械上的复杂部件,一般是简化成平面问题以求得理论或实验的近似解答,因而难以达到预期的目的和要求。随着科学技术的发展,作为实验应力分析主要手段之一的光弹性技术也日益成熟和完善。目前己得到广泛应用,它对于解决复杂的三维问题尤其有效,不仅能了解表面应力状态,而且可探求内部应力规律,为强度设计提供依据。
First, the preface In the production and construction and engineering practice, constantly put forward a new topic of stress analysis. In the past, new structures and mechanical complicated components in engineering generally simplify the problem of plane to obtain the approximate solution of theory or experiment, so it is difficult to achieve the desired goal and requirement. With the development of science and technology, as one of the main means of experimental stress analysis, photoelasticity technology is also increasingly mature and perfect. It has been widely used so far. It is especially effective for solving complicated three-dimensional problems. It can not only understand the surface stress state, but also explore the internal stress law and provide the basis for strength design.