| 振荡冷却油腔活塞热结构强度的有限元分析 |
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| 引用本文： | 张勇,张力,申正均,司庆九,徐宗俊.振荡冷却油腔活塞热结构强度的有限元分析[J].内燃机工程,2004,25(5):56-59. |
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| 作者姓名： | 张勇 张力 申正均 司庆九 徐宗俊 |
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| 作者单位： | 1. 重庆大学,机械工程学院,重庆,400030
2. 重庆长江依之密活塞工业有限公司 |
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| 摘 要： | 针对某增压柴油机振荡冷却油腔活塞的非对称结构，建立全活塞一活塞销一连杆小头的有限元模型；提出了振荡冷却油腔的第三类热边界条件的数学描述并进行了验证；通过建立活塞销和活塞销座孔的接触模型，研究了不同的卸载倾角对活塞结构强度的影响；采用阶谱单元(P单元)计算活塞回油槽等微细结构的力学效应；进行了在机械负荷和热负荷联合作用下的结构应力分析。
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| 关 键 词： | 内燃机 活塞 有限元法 结构分析 接触 阶谱单元 |
| 文章编号： | 1000-0925(2004)05-056-04 |
Thermal-Structural FEM Analysis of a Piston with an Inner Oscillating-Oil-Cooling Channel |
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| ZHANG Yong,ZHANG Li,SHEN Zheng-jun,SI Qing-jiu,XU Zong-jun.Thermal-Structural FEM Analysis of a Piston with an Inner Oscillating-Oil-Cooling Channel[J].Chinese Internal Combustion Engine Engineering,2004,25(5):56-59. |
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| Authors: | ZHANG Yong ZHANG Li SHEN Zheng-jun SI Qing-jiu XU Zong-jun |
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| Affiliation: | ZHANG Yong~1,ZHANG Li~1,SHEN Zheng-jun~2,SI Qing-jiu~2,XU Zong-jun~1 |
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| Abstract: | The FEM for the assembly parts of piston, gudgeon pin and small-end of connecting rod is constructed to investigate a diesel engine piston with an oscillating-oil-cooling channel. A convection boundary condition is introduced into the FEM to understand the heat transfer characteristics of the oscillating-oil-cooling channel, and a contact pair of gudgeon pin and gudgeon pin bosses is modeled to calculate the stress state in different stress-discharging slope angles on gudgeon pin bosses, and P-method of FEM analysis is put forward to research on some small structure of the piston such as oil drain holes. Furthermore, a coupled structural analysis of the piston under the action of mechanical and thermal load is carried out. |
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| Keywords: | I C Engine Piston FEM Structural Analysis Contact P-method |
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