船体矩形板边界局部屈服下的弯曲

本文应用广义变分原理和广义伽辽金法求解船体板架中四周刚性固定而边界产生局部屈服的矩形薄板弯曲问题．文中把局部屈服区边界视为有极限弯矩作用的铰支边界．由于边界屈服状态比较复杂，文中引入了“相当塑性铰线”概念，从而把问题归结为混合边界问题求解，并把弹塑性问题转化为弹性问题处理．文中提出了具体计算方法，计算结果与文献［1］作了比较，对处理实际工程问题具有一定的实用价值．

BENDING OF CLAMPED RECTANGULAR PLATE WITH EDGES LOCALLY YIELDED

Based on generalized variation principle and generalized Galerkin's method, the bending of clamped rectangular plate with edges partially yielded is discussed. The yielded edges are considered as hinged edges with limit moment. The concept of u equally plastic hinge line" is proposed which results in solving the problem with mixed boundary, and transforming elasto-plastic problem into elastic one. The calculation results show that the method proposed in the paper is better than that by other investigators.