考虑应变软化的圆薄板轴对称弯曲的极限荷载

本文以轴对称弯曲的圆薄板为例,详细讨论了考虑应变软化时确定极限荷载的方法,同时对极限状态的定义、中性面的确定、广义屈服准则成立的条件以及极限广义力的计算等问题进行了研究.算例表明传统的塑性极限分析方法用于应变软化材料夸大了材料的承载能力,将会产生不可忽视的误差.

Load-Carrying Capacity of Circular Thin Plate with Axis-Symmetric Bending by Considering Strain Softening

In this paper with axis-symmetric bending as an example, the load-carring capacity of circular thin plate taking into account of strain softening is discussed. Some problems such as the determination of limiting state, neutral layer and the general yield criterion, limiting generalized force, etc. are also studied. Numerical results of the example indicate that the traditional plastic limiting analysis method is not applicable to concrete-like strian softening materials.