摘要
基于一阶剪切变形层板理论，提出了一种适用于双悬臂梁试样能量释放率计算的可动边界变分方法解，分层前缘各点的能量释放率为剪力和挠度偏导数之乘积。该方法有较高的计算效率。通过与二维和三维有限元方法的计算比较，验证了本方法的正确性。
Using a first order deformable plate theory and variation methods with moving boundary,a new method for calculating the energy release rate distribution of the double cantilever beam (DCB) specimens is presented.The energy release rate at every point along the DCB crack front is given by the product of the tranverse shear force and the deflection derivation. The method is time saving. The distribution of energy release rate predicted by three dimensional finite element analyses of DCB specimens verified the accuracy of the method presented.
出处
《南京航空航天大学学报》
CAS
CSCD
1996年第3期371-375,共5页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
板
变分法
能量释放率
双悬臂梁
plates
variational methods
delamination
energy release rate
double cantilever beam
moving boundary
