一种高阶非线性钢筋混凝土平板单元

在文献［１］高阶钢筋混凝土膜元的基础上，提出了一种具有１４个节点的高阶钢筋混凝土平板单元．钢筋混凝土材料模型仍采用Ｖｅｃｃｈｉｏ的抹平旋转裂缝模型，几何非线性仍采用所谓总体Ｌａｇｒａｎｇｅ列式法，非线性方程采用割线刚度位移增量迭代法．数值算例表明本文的方法是可靠的，高阶平板单元虽然列式复杂，但与低阶元相比，其计算量要少且精度要高

A HIGHER ORDER NONLINEAR FEM FOR RC PLATES

Based on the high order nonlinear membrane elements presented in Reference , the formulation of a higher order rectangular 14 noded RC Plate element is proposed for the analysis of RC panel walls. The nodal DOF of the element presented are assumed to be in plane displacements u, v; transverse deflection w and cross section rotations ψ x, ψ y , and their derivatives (with respect to x ). Of the element displacements consequently are 3rd order Hermite polynomial in the x direction and ...