Vehicle Engine >

2017 , Vol. 0 >Issue 3: 33 - 37

DOI: https://doi.org/10.3969/j.issn.1001-2222.2017.03.006

Fatigue Reliability Analysis of Cylinder Head Based on Probability Finite Element Method

  • WU Bo ,
  • QIN Xinfeng ,
  • JIA Xiaoliang ,
  • DENG Yachong
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  • （1. China North Engine Research Institute（Tianjin）, Tianjin 300400, China；2.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Military Representative office of the Chinese People’s Liberation Army in 616 Factory, Datong 037036, China;4. Military Representative office of the Chinese People’s Liberation Army Armored Troops, Tianjin 300400, China）
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Abstract

A probability finite element method used to construct
the approximate nonlinear relation between random parameters and structure
responds was supposed based on uniform design and BP neural network. Compared
with direct MonteCarlo method, this method reduced
sampled data greatly and was better to apply to the largescale engineering structure probability finite element calculation.
Fatigue failure case of diesel engine cylinder head was carried out by this
method. The fatigue reliability life was calculated and the sensitivity
analysis of 22 loading parameters such as burning pressure, bolts preloading and fuel injector preloading was
performed too. The main influencing parameters which caused cylinder head
structure fatigue failure were determined preliminarily in the end.

Key words： probability finite element; diesel engine; cylinder head; structure fatigue； reliability

Cite this article

WU Bo , QIN Xinfeng , JIA Xiaoliang , DENG Yachong . Fatigue Reliability Analysis of Cylinder Head Based on Probability Finite Element Method[J]. Vehicle Engine, 2017 , 0(3) : 33 -37 . DOI: 10.3969/j.issn.1001-2222.2017.03.006

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