The effect of up-armoring of the high-mobility multi-purpose wheeled vehicle (HMMWV) on the off-road vehicle performance

M. Grujicic, H. Marvi, G. Arakere, W. C. Bell, I. Haque

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Purpose - A parallel finite-element/multi-body-dynamics investigation is carried out of the effect of up-armoring on the off-road performance of a prototypical high-mobility multipurpose-wheeled vehicle (HMMWV). The paper seeks to investigate the up-armoring effect on the vehicle performance under the following off-road maneuvers: straight-line flatland braking; straight-line off-angle downhill braking; and sharp left turn. Design/methodology/approach - For each of the above-mentioned maneuvers, the appropriate vehicle-performance criteria are identified and the parameters used to quantify these criteria are defined and assessed. The ability of a computationally efficient multi-body dynamics approach when combined with a detailed model for tire/soil interactions to yield results qualitatively and quantitatively consistent with their computational counterparts obtained using computationally quite costly finite element analyses is assessed. Findings - The computational results obtained clearly reveal the compromises in vehicle off-road performance caused by the up-armoring employ to improve vehicle blast and ballistic protection performance/survivability. The results obtained are also analyzed and explained in terms of general field-test observations in order to judge physical soundness and fidelity of the present computational approaches. Originality/value - The paper offers insights into the effects of up-armoring of the HMMWV on off-road vehicle performance.

Original languageEnglish (US)
Pages (from-to)229-256
Number of pages28
JournalMultidiscipline Modeling in Materials and Structures
Issue number2
StatePublished - 2010
Externally publishedYes


  • Finite element analysis
  • Modelling
  • Road vehicles
  • Simulation

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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