Modal and stress analysis of gear train design in portal axle using finite element modeling and simulation

Jong Boon Ooi, Xin Wang, Ching Seong Tan, Jee Hou Ho, Ying Pio Lim

Research output: Journal PublicationArticlepeer-review

33 Citations (Scopus)


The portal axle is a gearbox that is specially designed for off-road driving conditions. It is installed between the wheel and the axle shaft to give higher ground clearance to the vehicle. The modeling and simulation of spur gears in portal axle is important to predict the actual motion behavior. However, gear train design in portal axle is difficult to study comprehensively due to their relatively low cost and short product life cycle. In this study, modal analysis of portal axle is simulated using finite element method (FEM). Modal analysis is simulated on three different combinations of gear train system commonly designed for portal axle. The three gear trains being analyzed are gear train without idler gear, one idler gear and two idler gears. FEM static stress analysis is also simulated on three different gear trains to study the gear teeth bending stress and contact stress behavior of the gear trains in different angular positions from 0° to 18°. The single and double pair gear teeth contact are also considered. This methodology serves as a novel approach for gear train design evaluation, and the study of gear stress behavior in gear train which is needed in the small workshop scale industries.

Original languageEnglish
Pages (from-to)575-589
Number of pages15
JournalJournal of Mechanical Science and Technology
Issue number2
Publication statusPublished - Feb 2012
Externally publishedYes


  • Angular position
  • Gear train
  • Modal analysis
  • Portal axle
  • Spur gears
  • Stress analysis

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering


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