Stress behavior of a novel parabolic spring for light duty vehicle

Yat Sheng Kong, Mohd. Zaidi Omar, Lee Boon Chua, Shahrum Abdullah

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

4x4 pick up is usually designed to be a workhorse where multi leaf spring is the most suitable option for suspension. However, most of the users adopted it for leisure and they demand for better ride and comfort. The driving pleasure and passenger comfort is one of the primary considerations for those pick up wagons. Hence, parabolic spring with the similar characteristics to reduce the weight of the suspension system and provide smooth articulation is designed. In order to maintain the same safety factor as the conventional spring, the strength of the spring must be maintained. This paper presents about kinematic behavior of few types of leaf spring by finite element analysis. The purpose is to find out the maximum stress exerted on the spring while the pickup truck is undergoing several driving conditions. The analysis of different load cases were used to validate the design to prevent catastrophic failure of the design which can cause severe harm to the users. Combination of vertical and windup load cases are being applied in finite element analysis to simulate the parabolic spring behavior. The maximum stress distribution and deformed shape was visualized and analyzed. Stress over the length of the spring was plotted to provide a good visualization of the critical point of high stress region. Besides, the vertical stiffness and windup stiffness of the springs are calculated. To prevent the damages caused by axle wrap, windup stiffness is an important parameter to resist the force generated during this scenario. The stress results show that parabolic spring can provide the same capability in load carrying as multi-leaf spring.

Original languageEnglish
Pages (from-to)617-620
Number of pages4
JournalInternational Review of Mechanical Engineering
Volume6
Issue number3
Publication statusPublished - 2012

Fingerprint

Leaf springs
Stiffness
Finite element method
Pickups
Safety factor
Axles
Trucks
Stress concentration
Kinematics
Visualization

Keywords

  • Light duty vehicle
  • Parabolic spring
  • Stress-strain

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Stress behavior of a novel parabolic spring for light duty vehicle. / Kong, Yat Sheng; Omar, Mohd. Zaidi; Chua, Lee Boon; Abdullah, Shahrum.

In: International Review of Mechanical Engineering, Vol. 6, No. 3, 2012, p. 617-620.

Research output: Contribution to journalArticle

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