| 基于弹性计算的铝合金活塞低循环疲劳寿命预测 |
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| 引用本文： | 张卫正 魏春源. 基于弹性计算的铝合金活塞低循环疲劳寿命预测[J]. 北京理工大学学报, 2000, 20(2): 179-183 |
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| 作者姓名： | 张卫正 魏春源 |
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| 作者单位： | 北京理工大学,车辆工程学院,北京,100081 |
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| 摘 要： | 为了研究内燃机铝合金活塞在高温蠕变影响下的低循环疲劳寿命，以柴油机铝合金活塞弹性有限元计算所得的名义应力，应变为基础，利用Ｎｅｕｂｅｒ原则计算其真实弹生应力应变。
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| 关 键 词： | 内燃机 活塞 低循环疲劳 寿命预测 铝合金 弹性 |
Forecast of Low Cycle Fatigue Life for the Aluminium Alloy Piston Based on the Elastic Calculation |
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| ZHANG Wei-zheng,WEI Chun-yuan,GUO Liang-ping,HOU Hui-miao. Forecast of Low Cycle Fatigue Life for the Aluminium Alloy Piston Based on the Elastic Calculation[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2000, 20(2): 179-183 |
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| Authors: | ZHANG Wei-zheng WEI Chun-yuan GUO Liang-ping HOU Hui-miao |
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| Abstract: | To study the low cycle fatigue life of the ICE aluminium alloy piston under the influence of high temperature creep, based on the result of elastic finite element calculating and by means of the Neuber principle for the part nominal stress-strain analysis, the elastic and plastic strain of the aluminium alloy piston on the diesel engine was calculated. According to the loading characteristic of ICE piston, the forecasting formulae of its low cycle fatigue life was derived under the influence of high temperature creep. A set of forecasting formulae concerning the low cycle fatigue life of piston was put forward and also confirmed with the experiment. |
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| Keywords: | internal-combustion engine piston Neuber principle creep low cycle fatigue forecast of the fatigue life |
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