FRACTURE SIMULATION ANALYSIS OF CONNECTING ROD ON DIESEL ENGINE

JIA DeWen; BAI JianYong; QIN Fei; FAN DeWen

doi:10.16579/j.issn.1001.9669.2016.03.037

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FRACTURE SIMULATION ANALYSIS OF CONNECTING ROD ON DIESEL ENGINE

更新时间：2022-09-22

- FRACTURE SIMULATION ANALYSIS OF CONNECTING ROD ON DIESEL ENGINE
- Journal of Mechanical Strength Vol. 38, Issue 3, Pages: 635-639(2016)
- 作者机构：
  
  1. 昆明理工大学云南省内燃机重点实验室
  2. 云南西仪工业股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2016.03.037
  CLC：
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JIA DeWen, BAI JianYong, QIN Fei, et al. FRACTURE SIMULATION ANALYSIS OF CONNECTING ROD ON DIESEL ENGINE. [J]. 38(3):635-639(2016)
DOI：

JIA DeWen, BAI JianYong, QIN Fei, et al. FRACTURE SIMULATION ANALYSIS OF CONNECTING ROD ON DIESEL ENGINE. [J]. 38(3):635-639(2016) DOI： 10.16579/j.issn.1001.9669.2016.03.037.

摘要

针对高爆发压力柴油机连杆工作时容易产生疲劳断裂,采用多体动力仿真分析方法获得连杆工作时的动态载荷谱,并在此基础上,应用动态应力恢复方法获得连杆疲劳寿命危险区域,并针对该区域进行断裂仿真分析。分析结果表明连杆在产生疲劳裂纹后继续工作的工作循环次数从百万次降低到万次,因此一旦发现连杆产生裂纹最好及时更换,避免灾难性事故的发生。

Abstract

The connecting rod of high explosion pressure diesel engine was easily fatigue and fracture; the working dynamic load of connecting rod was obtained based on the multibody dynamics. And on this basis,the fatigue life danger zone was founded based on the dynamic stress recovery method,and fracture simulation was analyzed for the region. The results show that the operating cycles reduced from millions to ten thousand times after fatigue cracks taking place,so once the crack was founded,it was the best time to replace the connecting rod to avoid catastrophic accidents.

关键词

柴油机连杆疲劳分析断裂分析

Keywords

Diesel engineConnecting rodFatigue analysisFracture analysis

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