Design optimization of the hollow output shaft used in portal axle unit using finite element method

Jong Boon Ooi, Xin Wang, Ying Pio Lim

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


Portal axle unit is a gearbox unit installed on every end axles of the vehicle. They are installed to the vehicle to give higher ground clearance to enable vehicle to go over large obstacle when driving in off-road conditions. Shafts designed must be exceptionally tough and lightweight to improve the overall performance of the portal axle unit. In this paper, the design of the hollow shaft with rib attached at each end is analysed in detail. Selected parameters of the rib are studied to further optimize the proposed shaft design. Finite element method (FEM) is employed to simulate stress analysis on the shaft models. Torque delivered from the engine to the shaft and the shaft's weight is considered in the FEM simulation. The stress and weight reduction results are calculated for optimum shaft, existing shaft and solid shaft for comparison. The optimum model of the shaft shows slight improvement over the existing shaft.

Original languageEnglish
Title of host publication50th Annual Conference of the British Institute of Non-Destructive Testing 2011, NDT 2011 Held in conjunction with the Materials Testing Exhibition, MT 2011
PublisherBritish Institute of Non-Destructive Testing (BINDT)
Number of pages12
ISBN (Print)9781618393432
Publication statusPublished - 2011
Externally publishedYes
EventAnnual Conference of the British Institute of Non-Destructive Testing 2011 - Telford, United Kingdom
Duration: 13 Sep 201115 Sep 2011
Conference number: 50th


ConferenceAnnual Conference of the British Institute of Non-Destructive Testing 2011
Abbreviated titleBINDT 2011
Country/TerritoryUnited Kingdom

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