Vibration, Dynamic Stress and Fatigue Life Analysis of Automotive Underhood Nylon Fans: Numerical and Experimental Investigation

Paper #:
  • 970072

Published:
  • 1997-02-24
Citation:
Lakshmikantha, M., Chiu, D., and Mita, Y., "Vibration, Dynamic Stress and Fatigue Life Analysis of Automotive Underhood Nylon Fans: Numerical and Experimental Investigation," SAE Technical Paper 970072, 1997, https://doi.org/10.4271/970072.
Pages:
14
Abstract:
Vibration and fatigue study of glass-reinforced nylon, as an alternative material to steel for engine driven fans, is discussed. The use of nylon, which has a lower density than steel, offers a significant weight reduction and consequently less burden on the related underhood components and result in longer life for water pumps, fan clutches and drive belts. The temperature and humidity-dependent properties of nylon fan often works favorably from the view point of fatigue life, by shifting the fan's natural frequencies away from the occurrence of resonance. Nylon fans also offer more design flexibility without significantly affecting the cost.Despite such apparent advantages very little literature in the automotive field has dealt with vibration and fatigue of nylon fans. In this paper, computer-based finite element method (FEA) is used as the analytical tool to determine the frequencies and stresses produced at different values of temperature, humidity, and vibration excitations. Comparisions were made against experimentally obtained data, and have seen good agreements. Fatigue analysis was also conducted in order to predict life-expectancy of the nylon fans.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2016-03-10
Technical Paper / Journal Article
2010-09-28
Technical Paper / Journal Article
2010-09-28
Technical Paper / Journal Article
2011-04-12
Training / Education
2017-01-20
Training / Education
2013-04-09