|
|||||
|
|
| 扩展裂纹尖端的塑性热耗散与温度场 | |
| 引用本文： | 罗文波,杨挺青. 扩展裂纹尖端的塑性热耗散与温度场[J]. 应用力学学报, 2004, 21(1): 129-133 |
| 作者姓名： | 罗文波 杨挺青 |
| 作者单位： | 1. 湘潭大学,湘潭,411105 2. 华中科技大学,武汉,430074 |
| 基金项目： | 国家自然科学基金项目 ( 10 172 0 3 7,2 0 2 0 40 12 )，湖南省教育厅青年项目 ( 0 2B0 0 5 ) |
| 摘 要： | 材料的不可逆变形功以热的形式耗散，形成温度场，本文考虑Ⅰ型裂纹尖端过程区塑性变形功的热耗散，视裂尖塑性过程区为内热源，通过合理地构造一个热源密度函数，结合裂尖塑性区的近似模型，给出了裂纹定常扩展过程中的裂尖温度场。 |
| 关 键 词： | 热耗散 温度场 裂纹扩展 裂尖塑性区 热源密度函数 材料力学 |
| 文章编号： | 1000-4939(2004)01-0129-05 |
On Heat Dissipation and Temperature Field at a Running Crack-tip |
|
| Luo Wenbo Yang Tingqing. On Heat Dissipation and Temperature Field at a Running Crack-tip[J]. Chinese Journal of Applied Mechanics, 2004, 21(1): 129-133 | |
| Authors: | Luo Wenbo Yang Tingqing |
| Affiliation: | Luo Wenbo 1 Yang Tingqing 2 |
| Abstract: | Temperature field is formed due to heat dissipation when material is subjected to irreversible deformation. In this paper, the heat dissipation due to plastic deformation in the crack-tip plastic zone was considered. By considering the propagating crack-tip plastic zone as a running heat source and constructing a reasonable heat source density function, the temperature distribution surrounding a steady running crack is obtained. The temperature rise is dependent on the crack growth speed and the material parameters. |
| Keywords: | crack-tip plastic zone heat dissipation temperature field crack growth. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |