Please wait a minute...
浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (4): 756-760    DOI: 10.3785/j.issn.1008-973X.2010.04.023
热能工程、动力与电气工程     
热负荷对柴油机结构强度及密封性能的影响
杨陈, 郝志勇, 陈馨蕊
浙江大学 机械与能源工程学院,浙江 杭州 310027
Thermal load influence on stress intensity and
sealing performance of diesel engine
YANG Chen, HAO Zhi-yong, CHEN Xin-rui
College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China
 全文: PDF  HTML
摘要：

将有限元仿真技术应用到发动机稳态传热和热机耦合分析中,研究热负荷对柴油机各部件应力分布及密封性能的影响.建立1130型柴油机主要部件的有限元传热模型,施加合理的边界条件和载荷,计算得到各组件的温度场分布.借助有限元方法,分析在热应力工况下温度场对发动机密封性的影响.温度场使得缸盖螺栓张力和气缸垫片压力变大,有助于改善密封性.与机械载荷工况进行对比,在热机耦合工况下气缸套和气缸盖的应力明显变大,说明在气缸盖、气缸套的强度计算中不应忽视热负荷的作用.
Abstract:

Finite element simulation technology was applied to the steady heat transfer and thermomechanical coupling analysis in order to investigate the influence of thermal load on stress intensity and sealing performance. An finite element heat transfer model of 1130 diesel engine assembly was set up, based on which the steady heat transfer analysis was performed subsequently by applying reasonable boundary conditions and loads. The influence on engine sealing performance due to thermal field under the thermal stress conditions was evaluated by using the finite element method. The results showed that the thermal load increases the bolt tensile force and the gasket pressure, which help to improve the sealing performance. Compared to the mechanical load case, the thermomechanical stress of the liner and the cylinder head is obviously increased, so the thermal load is not neglectable when calculating the stress intensity of the cylinder head and the cylinder liner.
出版日期: 2010-05-14
:  TK423.1  
基金资助:

国家自然科学基金资助项目（50575203）
通讯作者: 郝志勇，男，教授，博导.     E-mail: haozy@zju.edu.cn
作者简介: 杨陈（1982—），男，江苏盐城人，博士生，主要从事发动机虚拟设计研究. E-mail: 3000821025@163.com
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

杨陈, 郝志勇, 陈馨蕊. 热负荷对柴油机结构强度及密封性能的影响[J]. J4, 2010, 44(4): 756-760.

YANG Chen, HAO Zhi-Yong, CHEN Xin-Juan. Thermal load influence on stress intensity and
sealing performance of diesel engine. J4, 2010, 44(4): 756-760.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.04.023    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I4/756

［1］ 王东方,潘琼瑶,郑百林,等.柴油机气缸盖多场耦合三维有限元分析［J］.力学季刊,2005, 26(3): 511516.
WANG Dongfang, PAN Qiongyao, ZHENG Bailin, et al. Three dimensional finite element method multifield coupling analysis for diesel engine cylinder cap ［J］. Chinese Quarterly of Mechanics, 2005, 26(3): 511516.
［2］ 刘金祥,廖日东,张有,等. 6114柴油机缸盖有限元结构分析［J］. 内燃机学报, 2004, 35(3): 4548.
LIU Jinxiang, LIAO Ridong, ZHANG You, et al. Finite element analysis for cylinder head of 6114 diesel engine ［J］. Transactions of CSICE, 2004, 35(3): 4548.
［3］ 杨世文,张翼,苏铁熊,等.重载柴油机气缸套变形分析及结构参数优化［J］.内燃机工程,2003,24(2): 2529.
YANG Shiwen, ZHANG Yi, SU Tiexiong, et al. Distortion analysis and structural parameters optimization of cylinder liner of heavyduty diesel engines ［J］. Chinese Internal Combustion Engine Engineering, 2003, 24(2): 2529.
［4］ 陈火红,于军泉,席源山.MSC.Marc/Mentat 2003基础与应用实例［M］.北京：科学出版社,2004: 405411.
［5］ 陈特銮.内燃机热强度［M］.北京：国防工业出版社,1991: 8895.
［6］ 李迎.内燃机流固耦合传热问题数值仿真与应用研究［D］.杭州：浙江大学,2006.
LI Ying. Simulation and application of solidliquid coupled heat transfer in internal combustion engine ［D］. Hangzhou: Zhejiang University, 2006.
［7］ 杨陈,郝志勇,徐红梅,等.1130型柴油机组件的非线性接触分析［J］.内燃机工程,2009,30(1): 5963.
YANG Chen, HAO Zhiyong, XU Hongmei, et al. Nonlinear contact analysis on the assembly parts of 1130 diesel engine ［J］. Chinese Internal Combustion Engine Engineering, 2009, 30(1): 5963.
[1] 杨陈, 郝志勇, 刘保林, 等. 变密度法在气缸体轻量化设计中的应用[J]. J4, 2009, 43(5): 916-919.