NDLI: Comparing Fatigue Life Reliability of a Composite Leaf Spring With a Steel Leaf Spring

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Shamsaei, Nima Rezaei, Davood
Copyright Year	2004
Abstract	In the present study, the fatigue behavior of an optimized composite leaf spring and a four leaf steel spring have been analyzed and compared. In a paper, issued by co-author, a four leaf steel spring was replaced by a composite leaf spring. The geometry of composite spring has been optimized to obtain the minimum weight under stress and displacement constraints due to the given static external forces. In this study, both above-mentioned leaf springs have been fatigue analyzed. The vehicle movement has been simulated on four different standard roads in ADAMS software and the spring supports reactions have been derived. Stress time spectrum micro-blocks in critical element of leaf springs have been obtained using ANSYS software and considering ADAMS results as loading. The stress time spectrum macro-blocks for long time from the stress time spectrum in micro-blocks have been created according to statistical and random vibration principles. After finding stress probability density functions for composite leaf spring and equivalent steel leaf spring, fatigue reliabilities have been extracted for both of them. Results showed that the fatigue life reliability in composite leaf spring is much better than steel spring.
Starting Page	371
Ending Page	374
Page Count	4
File Format	PDF
ISBN	0791841731
DOI	10.1115/ESDA2004-58513
e-ISBN	0791837416
Volume Number	Volume 1
Conference Proceedings	ASME 7th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2004-07-19
Publisher Place	Manchester, England
Access Restriction	Subscribed
Subject Keyword	Probability density function Fatigue reliability Composite Leaf spring Fatigue life Composite materials Probability Fatigue Reliability Steel Density Springs
Content Type	Text
Resource Type	Article

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