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为明确焊接承载构件疲劳和脆性断裂的安全性 ,必须经过一定的计算 .计算机的广泛应用使得这种计算过程得以频繁、快速、可靠的实现 .焊接承载构件工作在特定的温度和动态载荷环境中 ,会发生脆性断裂 ,估测断裂力学中主要参数断裂韧度的模型由三种 ,其中最重要的是 Irwin模型 ,在应用这个模型进行焊接承载构件的脆性断裂计算时 ,需要作一些统计学方面的假设 .并对最难获得的参数应力集中因子的采用了三种方法进行估测 ;相关系数法、加权函数法和解析法
In order to clarify the safety of the fatigue and brittle fracture of the welded load-bearing member, some calculations must be made.With the wide application of the computer, the calculation process can be realized frequently, quickly and reliably.The welding load-bearing component works in a specific temperature and dynamic load environment , Brittle fracture occurs, there are three models to estimate the fracture toughness of the main parameters in fracture mechanics. The most important one is the Irwin model. When applying this model to calculate the brittle fracture of welded load bearing members, some statistical aspects are needed The assumption of the most difficult to obtain the parameters of stress concentration factor using three methods to estimate; correlation coefficient method, the weighted function method and analytical method