| 汽车链疲劳寿命分布规律 |
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| 引用本文： | 孟繁忠,程亚兵,李亚男. 汽车链疲劳寿命分布规律[J]. 吉林大学学报(工学版), 2006, 36(6): 889-0892 |
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| 作者姓名： | 孟繁忠 程亚兵 李亚男 |
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| 作者单位： | 吉林大学,链传动研究所,长春,130022;吉林大学,链传动研究所,长春,130022;吉林大学,机械科学与工程学院,长春,130022 |
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| 基金项目： | 国家科技型中小企业技术创新基金 |
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| 摘 要： | 研究了汽车链06BT的疲劳寿命分布规律,阐述了在所进行的高应力试验条件下,其疲劳寿命服从两参数的威布尔分布,并且其形状参数和尺度参数随载荷的增大而增大。加速试验(0.30Q载荷水平)的抽样检验比正常载荷(0.25Q载荷水平)节省时间14%,加速试验(0.33Q载荷水平)的抽样检验比正常载荷(0.25Q载荷水平)节省时间25%。由断口形貌(SEM)照片可以看出,汽车链06BT在0.25Q载荷水平的断口比在0.40Q载荷水平时的断口平滑得多。
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| 关 键 词： | 机械设计 汽车链 疲劳寿命 威布尔分布 抽样检验 断口形貌 |
| 文章编号： | 1671-5497（2006）06-0889-04 |
| 收稿时间： | 2005-11-08 |
| 修稿时间： | 2005-11-08 |
Fatigue lifetime distribution pattern of automotive chain |
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| Meng Fan-zhong,Cheng Ya-bing,Li Ya-nan. Fatigue lifetime distribution pattern of automotive chain[J]. Journal of Jilin University:Eng and Technol Ed, 2006, 36(6): 889-0892 |
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| Authors: | Meng Fan-zhong Cheng Ya-bing Li Ya-nan |
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| Affiliation: | 1. Chain Transmission Institute, Jilin University, Changchun 130022, China; 2. College of Mechanical Science and Engineering Jilin University, Changchun 130022, China |
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| Abstract: | The fatigue lifetime distribution pattern of the automotive chain 06BT was studied experimentally. The results showed that its lifetimes under high stress test conditions comply with Weibull distribution with two parameters, the form parameter and the measure parameter which augment with the test load. The sampling test by accelerating test at load level 0.30Q can save time 14% in comparison with that at normal load level O. 25Q, and the test at 0.33Q save time 25% than test at level 0.25Q. The SEM photographs of the break surfaces of the chain showed that the surfaces broken by load level 0.25Q are smoother than those by level 0.40Q. |
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| Keywords: | mechanical design automotive chain fatigue lifetime weibull distribution sample test crack appearance |
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