| 基于有限元分析的金属套／陶瓷柱外伸式过盈连接应力分布规律 |
| |
| 引用本文： | 唐修检,田欣利,薛春芳,任珉玮.基于有限元分析的金属套／陶瓷柱外伸式过盈连接应力分布规律[J].装甲兵工程学院学报,2009,23(1):84-86. |
| |
| 作者姓名： | 唐修检 田欣利 薛春芳 任珉玮 |
| |
| 作者单位： | 1. 装甲兵工程学院,装备再制造技术国防科技重点实验室,北京,100072
2. 装甲兵工程学院,机械工程系,北京,100072 |
| |
| 摘 要： | 以45^#金属套和氮化硅陶瓷柱为研究对象，采用有限元法分析了不同过盈量下金属套／陶瓷柱外伸式过盈连接的应力分布规律。结果表明：陶瓷柱在接触边缘均存在明显的边缘效应，轴向应力梯度较大；金属套在接触边缘内侧存在显著的应力集中，其值远大于对应位置陶瓷柱的压应力，易于导致陶瓷材料破坏。采用热胀法进行了试验验证，过盈连接试样均在12h内发生自然断裂，较好地验证了有限元分析结果。
|
| 关 键 词： | 陶瓷 金属 外仲式过盈连接 应力 有限元 |
Stress Distribution Laws of Overhanging Interference Fit between Ceramics Column and Metal Sleeve Based on FEA |
| |
| TANG Xiu-jian,TIAN Xin-li,XUE Chun-fang,REN Min-wei.Stress Distribution Laws of Overhanging Interference Fit between Ceramics Column and Metal Sleeve Based on FEA[J].Journal of Armored Force Engineering Institute,2009,23(1):84-86. |
| |
| Authors: | TANG Xiu-jian TIAN Xin-li XUE Chun-fang REN Min-wei |
| |
| Institution: | 1.National Defense Key Laboratory of Remanufacturing Technology, Academy of Armored Force Engineering, Beijing 100072, China; 2. Department of Mechanical Engineering, Academy of Armored Force Engineering, Beijing 100072, China) |
| |
| Abstract: | Taking 45^# sleeve and Si3N4 column as researching objects, this paper presents the stress distribution laws of overhanging interference fit between ceramics column and metal sleeve by FEA under different interference tolerances. The results show that there are obvious edge-effect and high axial stress gradients at the contacting edge of ceramics column. At the zone of metal sleeve contacting inner edge, there are obvious stress concentration which are far more than the stress of ceramics column at the corresponding locations and it is easy to lead to ceramics column break. The samples assembled by thermal expansion method rupture in 12 hours, which validate the results of FEA. |
| |
| Keywords: | ceramics metal overhanging interference fit stress FEA |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
