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Dynamic response multiobjective optimization of road vehicle ride quality-a computational multibody system approach

Version 2 2024-06-04, 09:12
Version 1 2017-04-06, 11:17
journal contribution
posted on 2024-06-04, 09:12 authored by N Mohajer, Hamid AbdiHamid Abdi, S Nahavandi
Computational multibody system (MBS) method is a practical technique utilized for modeling, simulation, and optimization of mechanical systems. In the methodology of computational multibody system, equations of motion are derived, formulated, and solved through a systematic, generalized, and well-structured computational-mathematical approach. In this paper, the computational multibody system formulation, based on the appended Lagrangian method, is implemented to establish the governing equations of ride dynamics for a nonlinear ride model that represents a versatile half-car twotrack model of a road vehicle. The input to the system is a simulated road surface model based on the ISO road surface classification. The solution of the equation of motion is obtained using the direct integration approach along with constraint violation elimination and control techniques. Following the simulation, a time-domain multiobjective design optimization procedure is performed to improve the ride quality of the model. The ride quality comprises both ride comfort and ride safety. The optimization considers relevant objective functions including vibration isolation, suspension travel, road holding, and force index. The results of work show that the proposed method could acceptably estimate the optimal values of design variables for specific road classes and vehicle driving speeds. The simulation-based ride quality optimization performed here could facilitate improvement of suspension and tyre.

History

Journal

Proceedings of the Institution of Mechanical Engineers, part K: journal of multi-body dynamics

Volume

231

Pagination

316-332

Location

London, Eng.

ISSN

1464-4193

eISSN

2041-3068

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2016, IMechE

Issue

2

Publisher

SAGE Publications