Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads

This study describes the effects of bounce, brake, and roll behavior of a bus toward its leaf spring suspension systems. Parabolic leaf springs are designed based on vertical deflection and stress; however, loads are practically derived from various modes especially under harsh road drives or emerge...

Full description

Saved in:
Bibliographic Details
Main Authors: Y. S. Kong, M. Z. Omar, L. B. Chua, S. Abdullah
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2013/261926
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832551120062382080
author Y. S. Kong
M. Z. Omar
L. B. Chua
S. Abdullah
author_facet Y. S. Kong
M. Z. Omar
L. B. Chua
S. Abdullah
author_sort Y. S. Kong
collection DOAJ
description This study describes the effects of bounce, brake, and roll behavior of a bus toward its leaf spring suspension systems. Parabolic leaf springs are designed based on vertical deflection and stress; however, loads are practically derived from various modes especially under harsh road drives or emergency braking. Parabolic leaf springs must sustain these loads without failing to ensure bus and passenger safety. In this study, the explicit nonlinear dynamic finite element (FE) method is implemented because of the complexity of experimental testing A series of load cases; namely, vertical push, wind-up, and suspension roll are introduced for the simulations. The vertical stiffness of the parabolic leaf springs is related to the vehicle load-carrying capability, whereas the wind-up stiffness is associated with vehicle braking. The roll stiffness of the parabolic leaf springs is correlated with the vehicle roll stability. To obtain a better bus performance, two new parabolic leaf spring designs are proposed and simulated. The stress level during the loadings is observed and compared with its design limit. Results indicate that the newly designed high vertical stiffness parabolic spring provides the bus a greater roll stability and a lower stress value compared with the original design. Bus safety and stability is promoted, as well as the load carrying capability.
format Article
id doaj-art-71ec3a58578e4dacb9ce489492938664
institution Kabale University
issn 1537-744X
language English
publishDate 2013-01-01
publisher Wiley
record_format Article
series The Scientific World Journal
spelling doaj-art-71ec3a58578e4dacb9ce4894929386642025-02-03T06:04:56ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/261926261926Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various LoadsY. S. Kong0M. Z. Omar1L. B. Chua2S. Abdullah3Department of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, MalaysiaDepartment of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, MalaysiaAPM Engineering & Research Sdn Bhd, Level 4, Bangunan B, Peremba Square, Saujana Resort, Seksyen U2, 40150 Shah Alam, Selangor, MalaysiaDepartment of Mechanical & Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, MalaysiaThis study describes the effects of bounce, brake, and roll behavior of a bus toward its leaf spring suspension systems. Parabolic leaf springs are designed based on vertical deflection and stress; however, loads are practically derived from various modes especially under harsh road drives or emergency braking. Parabolic leaf springs must sustain these loads without failing to ensure bus and passenger safety. In this study, the explicit nonlinear dynamic finite element (FE) method is implemented because of the complexity of experimental testing A series of load cases; namely, vertical push, wind-up, and suspension roll are introduced for the simulations. The vertical stiffness of the parabolic leaf springs is related to the vehicle load-carrying capability, whereas the wind-up stiffness is associated with vehicle braking. The roll stiffness of the parabolic leaf springs is correlated with the vehicle roll stability. To obtain a better bus performance, two new parabolic leaf spring designs are proposed and simulated. The stress level during the loadings is observed and compared with its design limit. Results indicate that the newly designed high vertical stiffness parabolic spring provides the bus a greater roll stability and a lower stress value compared with the original design. Bus safety and stability is promoted, as well as the load carrying capability.http://dx.doi.org/10.1155/2013/261926
spellingShingle Y. S. Kong
M. Z. Omar
L. B. Chua
S. Abdullah
Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
The Scientific World Journal
title Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
title_full Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
title_fullStr Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
title_full_unstemmed Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
title_short Explicit Nonlinear Finite Element Geometric Analysis of Parabolic Leaf Springs under Various Loads
title_sort explicit nonlinear finite element geometric analysis of parabolic leaf springs under various loads
url http://dx.doi.org/10.1155/2013/261926
work_keys_str_mv AT yskong explicitnonlinearfiniteelementgeometricanalysisofparabolicleafspringsundervariousloads
AT mzomar explicitnonlinearfiniteelementgeometricanalysisofparabolicleafspringsundervariousloads
AT lbchua explicitnonlinearfiniteelementgeometricanalysisofparabolicleafspringsundervariousloads
AT sabdullah explicitnonlinearfiniteelementgeometricanalysisofparabolicleafspringsundervariousloads