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本文介绍的杆-板单元结合法利用广义位移变换矩阵建立板壳单元与薄壁杆单元节点位移协调关系,可以处理任意复杂形状的薄壁杆系结构,并能得到接头部位板的局部弯曲应力。算例表明,该方法可用较少机时获得与板壳有限元计算相当的精度。
The rod-plate unit combination method introduced in this paper uses the generalized displacement transformation matrix to establish the coordination relationship between the displacements of plate-shell elements and thin-walled rods. It can handle the thin-walled rod structure with any complex shape, and can obtain the local bending stress of joints. . The example shows that the method can obtain the accuracy equivalent to the finite element calculation of the plate shell with less machine.