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采用有限元法对板在轴压作用下的破坏性能进行了分析。在板的轴向破坏中,部分硬化参数由两个主要因素控制:材料的极限应力和板边缘的极限平面内侧向变形。然后,基于有效宽度理论和有效板理论,对两类破坏形式推导出一个简化的破坏条件,并且通过与各种材料和几何特性下的数值分析结果进行对比验证了这个破坏条件的有效性。此外,基于本文所提议的破坏条件提出了一个预测极限应力的方法。
The failure performance of the plate under axial compression was analyzed by finite element method. In the axial failure of the plate, some of the hardening parameters are governed by two major factors: the ultimate stress of the material and the lateral deformation in the ultimate plane of the plate edge. Then, based on the effective width theory and the effective plate theory, a simplified failure condition is deduced for both types of damage, and the effectiveness of this failure condition is verified by comparing with the numerical results of various materials and geometrical characteristics. In addition, a method of predicting ultimate stress is proposed based on the damage conditions proposed in this paper.