摘要
本文研究了将虚拟裂纹闭合法应用ANSYS有限元计算软件,计算组合材料的应变能释放率。在有限元计算中,为了减小后处理工作量,将弹簧单元施加在裂纹尖端。在实际的有限元计算中,COMBIN14单元被用来建立有限元模型,从而将求解过程和后处理过程联系起来,自动计算出能量释放率。随后,将该方法应用于计算组合材料的应变能释放率,进行数值模拟实验。通过分析比较数值计算结果和理论值,表明该数值分析方法所计算出的应变能释放率与理论值完全符合,该数值分析方法是一种高效,精确的数值分析方法。
Compulation of the strain energy release rate for composite material, based on the virtual close tech- nique, is studied. During the calculation in the finite element, in order to reduce the processing workload, the spring element is applied at the tip of the crack. In practical applications, with Combinl4 spring elements are being adopted to establish the finite element model, the solving process and post process are linked, so the the energy re- lease rate can be calculated quickly. Then, this technique is applied to calculate the strain energy release rate for composite material, and the technique is taken to do numerical simulation experiment. Comparing the numerical re- sults and theoretical values, it shows that the calculated values of the strain strain energy release rate are well with the theoretical values. This numerical analysis method is an efficient and accurate numerical analysis method.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2013年第3期8-12,共5页
Fiber Reinforced Plastics/Composites
基金
国家自然科学基金(50978055)
973项目(2012CB026200)
关键词
虚拟裂纹闭合法
ANSYS
应变能释放率
组合材料
virtual crack close technique
ANSYS
strain energy release rate
composite materials
