Effect of a pothole on the dynamics of an MDOF vehicle

Alexander V. Pesterev, Lawrence Bergman, Chin An Tan, Bingen Yang

Research output: Contribution to conferencePaperpeer-review

Abstract

A technique is developed to assess the dynamic contact forces arising from passage of road surface irregularities by a vehicle modeled as a general MDOF system. The equations governing vibration of a vehicle moving along an uneven profile are, first, transformed to the state-space form and, then, to a system of uncoupled first-order complex differential equations. For a local roadway irregularity described functionally, all equations are solved analytically. The solutions obtained are combined to give dependencies of the harmonic components of the contact forces on the vehicle speed and irregularity dimensions. The technique developed is applied to the calculation of the coefficients of the harmonic components of the contact forces arising after the passage of a "cosine" pothole. One interesting phenomenon reported in the DIVINE project, regarding the replacement of a steel suspension by an air suspension resulting in an increase in the maximum response of short-span bridges, is explained by applying the technique suggested. The discussion is amply illustrated by examples of the application of the technique to the calculation of the tire forces due to a pothole for two simple vehicle models.

Original languageEnglish (US)
Pages2181-2190
Number of pages10
StatePublished - Dec 1 2003
Event2003 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Chicago, IL, United States
Duration: Sep 2 2003Sep 6 2003

Other

Other2003 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference
CountryUnited States
CityChicago, IL
Period9/2/039/6/03

ASJC Scopus subject areas

  • Modeling and Simulation
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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