| 240/275系列柴油机钢顶铝裙组合活塞裂损分析及解决对策 |
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| 引用本文： | 杨英,周湘晔,兆文忠.240/275系列柴油机钢顶铝裙组合活塞裂损分析及解决对策[J].铁道学报,2005,27(2):40-43. |
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| 作者姓名： | 杨英 周湘晔 兆文忠 |
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| 作者单位： | 1. 中国北车集团,大连机车研究所,辽宁,大连,116021
2. 大连交通大学,机械工程学院,辽宁,大连,116028 |
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| 基金项目： | 铁道部科技研究开发项目(99J25) |
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| 摘 要： | 240/275系列柴油机钢顶铝裙活塞在铁路机车提速、重载后出现了活塞裙裂损事故,严重损害了活塞的寿命和可靠性。针对这一问题,开展了一系列研究和试验工作:以可靠性理论为指导,进行了活塞失效模式分析;创建了基于接触的组合活塞、活塞销、连杆的传力模型并进行了多方案有限元数值仿真;找到了原型活塞失效原因,研制并批量生产了新结构钢顶铝裙活塞。新结构活塞运用情况良好,相当数量的活塞经受住了机车走行60万km以上的考核。
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| 关 键 词： | 机车柴油机 钢顶铝裙活塞 失效分析 有限元数值仿真 |
| 文章编号： | 1001-8360(2005)02-0040-04 |
| 修稿时间： | 2004年5月20日 |
Study on Cracking of Pistons with Steel Crown and Aluminium Skirt for 240/275 Series Diesel Engines |
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| YANG Ying,ZHOU Xiang-ye,ZHAO Wen-zhong.Study on Cracking of Pistons with Steel Crown and Aluminium Skirt for 240/275 Series Diesel Engines[J].Journal of the China railway Society,2005,27(2):40-43. |
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| Authors: | YANG Ying ZHOU Xiang-ye ZHAO Wen-zhong |
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| Institution: | YANG Ying~1,ZHOU Xiang-ye~1,ZHAO Wen-zhong~2 |
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| Abstract: | In order to deal with severe cracking occurring in piston skirts of some steel-crown aluminium-skirt pistons, in 240/275 series diesel engines, and to increase the working life of pistons to meet the requirements of high-speed and heavy-haul of locomotives, a series of researches and tests have been done: (1) Find the failure mode and mechanism, quided by the reliability theory; (2) Create a complex FEA model based on the contact theory to simulate stress concentrations; (3) Finding the main failure reasons, develop the new-structure steel-crown aluminium-skirt piston and produce it in batches. The new pistons prove in good use and a considerable quantity of them can be adapted to suit the running distance of more than 600,000 km. |
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| Keywords: | diesel engine of locomotive piston composed of steel crown and aluminum skirt failure analysis FEA simulation |
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