Plate finite element modeling of laminated plates
Plate finite element modeling of laminated plates
复制标题
层合板的板有限元建模
DOI：
10.1016/0045-7949(94)90267-4
复制
发表时间：
1994
影响因子：
4.7
通讯作者：
C. K. Gim
中科院分区：
文献类型：
--
作者：
C. K. Gim
基于层合理论开发了平面有限元，其中包括横向剪切变形的影响。在对层压板的二维分层建模时，未分层区域由单层板单元建模，而分层区域由界面包含分层的两层板单元建模。为了确保分层裂纹尖端变形与合力和力矩平衡的兼容性，开发了多点约束算法并将其纳入有限元代码中。此外，虚拟裂纹闭合技术已被修改并实施到代码中，以便可以使用板单元计算应变能释放率。
A plane finite element is developed based on a lamination theory which includes the effect of transverse shear deformation. In modeling 2-D delaminations in laminated plates, the undelaminated region is modeled by a single layer of plate elements while the delaminated region is modeled by two layers of plate elements whose interface contains the delamination. To ensure the compatibility of deformation and equilibrium of resultant forces and moments at the delamination crack tip, a multipoint constraint algorithm has been developed and incorporated into the finite element code. In addition, the virtual crack closure technique has been modified and implemented into the code so that the strain energy release rate could be computed using the plate elements.