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目前有很多关于反复荷载作用下细长墙板所出现的疲劳裂纹的报告。裂纹可能最初是由焊接、腐蚀或错误使用造成的。板边裂纹一般会发展到靠近翼缘、加劲肋和其他边界构件。这些裂纹会导致薄壁墙板的承载能力下降。本文主要研究具有板边裂纹的剪力墙板的屈曲和后屈曲性能。假定裂纹与边界平行或者呈常态分布。通过有限元线性和非线性分析,确定裂纹和板的各种几何与力学特性的影响(如裂纹的长度和位置,边界条件,表面比和板材的长细比,材料的泊松比和弹性模量)。结果显示:当张力场区域内产生裂纹时,结构构件的性能会发生退化。
There are a lot of reports on fatigue cracks in slender wall panels under repeated loading. Cracks may have initially been caused by welding, corrosion, or misuse. Flank cracks generally develop close to the flanges, stiffeners and other boundary elements. These cracks lead to the reduction of the carrying capacity of the thin wall panels. In this paper, the buckling and post-buckling behavior of shear wall panels with plate edge cracks are mainly studied. It is assumed that the crack is parallel or normal to the boundary. Through the finite element analysis of linear and nonlinear, to determine the crack and the various geometric and mechanical properties of the plate (such as the length and location of the crack, the boundary conditions, the surface ratio and the slenderness ratio, Poisson ratio and elastic modulus the amount). The results show that the properties of structural members degrade when cracks develop in the tension field.