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Effect of Initial Imperfections on Ultimate Capacity of Plates with Arbitrary Boundaries
Author(s): 
Pages: 664-668
Year: Issue:  4
Journal: Chinese Journal of Applied Mechanics

Keyword:  极限承载力折减厚度法残余应力初始弯曲;
Abstract: 板钢结构承载力分析最终可化简为对一任意边界的矩形板在面内荷载作用下的极限承载力分析.从含初始弯曲的大挠度方程出发,以板厚度的折减量为摄动参数,将残余应力考虑成等效荷载,根据实用板与理想板的比较,得出板的厚度折减量和板的极限承载力方程.通过与非线性有限元方法和已有试验数据的验证分析,表明折减厚度法适用范围广、安全、精度高,可作为非线性有限元方法的补充,大大简化了结构极限承载力分析的复杂性.
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