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本文在符拉索夫变形假定的基础上,把开口薄壁杆件的弹性有限元法推广到弹塑性领域。与折板壳有限元法比较表明,这一方法具有较高的计算精度和运算效率。
In this paper, based on the hypothesis of Vlasov’s deformation, the elastic finite element method of open thin-walled members is extended to the elasto-plastic field. Compared with the finite element method of the folded plate shell, this method has higher calculation accuracy and computational efficiency.