基于1,2-3高阶剪切变形理论的四边形层合板单元列式

Four-node quadrilateral element formation for laminated composite plates based on 1,2-3 higher-order shear deformation theory

基于整体-局部位移假设的1,2-3高阶理论,推导出了适合计算任意角铺设复合材料层合板位移及层间应力的四边形层合板单元列式。对任意几何形状的复合材料层合板力学计算问题,都可以利用三角形单元和四边形单元进行有效的有限元计算。这表明四边形层合板单元的建立,无论是在理论上还是在工程实践上都具有重要意义。

Based on the global-local displacement hypothesis 1,2-3 higher-order theory,a four-node quadrilateral element formation for laminated composite plates has been presented.It is more convenient to use triangular element and quadrilateral element to solve the calculating problems of laminated composite plate in arbitrary shape.So it has important significance not only in theoretical aspect but also in engineering aspect.