摘要
根据能量泛函变分原理,推导开口薄壁杆件在杆端压力P和沿杆轴向均匀分布压力q共同作用下的控制方程,并采用伽辽金法求解,研究开口薄壁截面悬臂压杆的稳定问题,计算荷载P和ql不同比例情况下的临界荷载和P-ql临界荷载包络线。
The governing equation of compressive bars with thin-walled open section under the end pressure P and the uniform pressure q along the axis of the bar was derived according to energy functional variational principle,and a solution was obtained by Galerkin method. This paper presents the stability of cantilevered compressive bars with thin-walled open section,and the critical loads of P and ql with various scales and the envolope curve for P - ql critical load were calculated.
出处
《钢结构》
2014年第7期1-4,共4页
Steel Construction
基金
国家自然科学基金资助项目(50978058)
全国优秀博士学位论文作者专项资金资助项目(200954)
广东省自然科学基金资助项目(S2011010005037)
关键词
开口薄壁截面
压杆
临界荷载
包络线
thin-walled open section
compressive bar
critical load
envolope curve
