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AN ANALYTIC SOLUTION FOR POST-BUCKLING OF TUBULARS SUBJECTED TO AXIAL AND TORSIONAL LOADING IN HORIZONTAL CIRCULAR CYLINDERS
Author(s): 
Pages: 238-242
Year: Issue:  2
Journal: Acta Mechanica Sinica

Keyword:  管柱 压扭组合 屈曲 后屈曲 螺旋屈曲;
Abstract: 首先建立了考虑自重、受水平圆管约束的管柱在压担组合作用下的屈曲方程:此方程为四阶强非线性常微分方程,难以直接精确求解;通过管柱的正弦屈由分析,找到了方程中的小参数;利用小参数摄动法求解了强非线性屈曲方程,得到了管柱螺旋屈曲后的实际屈曲构形解析解,由此可进一步得到管柱发生螺旋屈曲的临界载荷;所得解析结果与数值计算结果及本文结果退化后与文献中的相关结果比较都有良好的一致性.
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