Volume 11, Issue 2 (6-2021)                   ASE 2021, 11(2): 3560-3568 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Ashouri H. Low cycle fatigue life prediction of an engine exhaust manifold. ASE 2021; 11 (2) :3560-3568
URL: http://www.iust.ac.ir/ijae/article-1-515-en.html
Low cycle fatigue life prediction of an engine exhaust manifold
Hojjat Ashouri
Department of Mechanical Engineering, Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch, Islamic Azad University, Tehran, Iran
Abstract:   (6278 Views)
This paper presents low cycle fatigue (LCF) life prediction of an engine exhaust manifold. First Solidworks software was used to model the exhaust manifolds. Then Ansys Workbench software was used to determine stress and fatigue life based on Morrow and Smith-Watson-Topper (SWT) approaches. Thermal fatigue (TMF) of the engine components easily happens due to excessive temperature gradient and thermal stress. Modern exhaust systems must withstand severe cyclic mechanical and thermal loads throughout the whole life cycle. The numerical results showed that the temperature and thermal stresses have the most critical values at the confluence region of the exhaust manifolds. This area was under low cycle fatigue. After several cycles the fatigue cracks will appear in this region. The results of the finite element analysis (FEA) correspond with the experimental tests, carried out in references, and illustrate the exhaust manifolds cracked in this region. Finite element (FE) simulation proved a close correlation between Morrow and SWT criterions results. The lifetime of this part can be determined through finite element analysis instead of experimental tests.
 
Keywords: low cycle fatigue, Morrow and SWT approaches, exhaust manifolds, confluence cracks
Full-Text [PDF 926 kb]   (6365 Downloads)    
Type of Study: Research | Subject: Internal Combustion Engines (ICE, ...)
Add your comments about this article : Your username or Email:
CAPTCHA
Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2022 All Rights Reserved | Automotive Science and Engineering

Designed & Developed by : Yektaweb