| 功能梯度材料裂纹能量释放率 |
| |
| 引用本文： | 张双寅. 功能梯度材料裂纹能量释放率[J]. 力学与实践, 2003, 25(1): . doi: 10.6052/1000-0992-2002-202 |
| |
| 作者姓名： | 张双寅 |
| |
| 作者单位： | 中科院力学所 100080 |
| |
| 摘 要： | 提出一个评价功能梯度材料裂纹扩展能量释放率的简单方法，用双悬臂梁柔度法推导了典型梯度材料内裂纹沿梯度方向扩展的能量释放率解析表达式，用算例分析了裂纹扩展方向不同能量释放率的差别.
|
| 关 键 词： | 功能梯度材料 能量释放率 |
| 收稿时间： | 2002-05-29 |
| 修稿时间： | 2002-05-29 |
FRACTURE ENERGY RELEASE RATE IN FUNCTIONALLY GRADED MATERIALS |
| |
| FRACTURE ENERGY RELEASE RATE IN FUNCTIONALLY GRADED MATERIALS[J]. Mechanics in Engineering, 2003, 25(1): . doi: 10.6052/1000-0992-2002-202 |
| |
| Authors: | ZHANG Shuangyin |
| |
| Abstract: | A simple method of calculating the energy release rate of crack in functionally graded materials is proposed. The double cantilever beam theory is used to derive the formulae of GIg. As an example for the use of this method three typical graded materials are evaluated. The results show that the modulus gradient has a great influence on the fracture energy. When the crack extends in the direction where the modulus is getting smaller, the energy release rate is smaller than that in the opposite direction. |
| |
| Keywords: | functionally graded materials crack energy release rate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《力学与实践》浏览原始摘要信息 |
|
点击此处可从《力学与实践》下载全文 |
