摘要
本文利用矩形截面在轴力和双向弯矩共同作用下极限状态相关作用曲面的精确解,借助坐标转换及叠加的方法,提出了一种适用于计算由多块狭长矩形组成的任意薄壁截面极限屈服面的方法。与现有方法比,该方法概念简明,编程简单。作为应用,本文计算了卷边槽形截面的极限屈服曲面。
This paper provides a unified approach for determining the limit yield surface forany thin-walled cross-sections under axial force and biaxial bending, using only the ex-act interaction relations for rectangular section under axiai force and biaxial bending,along with the concepts of transformation and superposition. Compared with thecurrently available method, the technique presented is conceptually simpler and easier inprogramming. As an application the paper calculated the limit yield surface of the lippedchannel section.
关键词
极限分析
薄壁截面
极限曲面
ultimate analysis
yield/ thin-walled section
