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一、问题的分类与求解的方法受到静力与动力载荷作用的结构的性态,依赖于一系列随机性质的因素,这些因素按照其来源可以分成二类.结构本身的几何或物理参量属于第一类:自理想几何形状的随机偏离、实现边界条件的方式的散乱、构料弹性与强度性质的散乱等等.表征结构在使用或试验时载荷和其他“外部”条件的随机参量属于第二类.在结构力学中应用统计方法是与可靠性(Надёжностъ)理论的发展紧密联系着.结构力学的研究对象是探求在结构中发生的应力与变形,可是工程计算并不停留在确定应力与变形,工程计算的结果应该是解决这样的问题:在规定使用期间,结构能否足够可靠地工作.归根到底,只是为了作出关于结构可靠性的判断
First, the problem of the classification and solution of the method by the static and dynamic load structure of the behavior, depends on a series of random factors, these factors according to their sources can be divided into two categories. Structure of the geometric or physical parameters belonging to the first One class: Random deviation from ideal geometric shapes, Scattering of the way to achieve boundary conditions, Scattering of elasticity and strength properties of structures, etc. Characterization of the load and other “external” conditions of the structure during use or testing The second category. The application of statistical methods in structural mechanics is closely linked to the development of reliability (Надёжностъ) theory. The object of structural mechanics is to search for stresses and deformations that occur in structures, but engineering calculations do not stop at determining stress. With regard to deformation, the result of engineering calculations should be to solve the problem: during the specified period of use, the structure can work reliably enough. In the final analysis, it is just to make a judgment on the reliability of the structure.