International Science Community Association Research Journal of Recent Sciences 2277 - 2502 1 8 2012 August 2 Pareto Optimization of Vehicle Suspension Vibration for a Nonlinear Half-car Model Using a Multi-objective Genetic Algorithm 17 22 EN Renganathan Manimaran 1 Thermal and Automotive Division, School of Mechanical and Building Sciences, VIT University, Vellore, INDIA ThundilKaruppaRaj Rajagopal 2 Energy Division, School of Mechanical and Building Sciences, VIT University, Vellore, INDIA SenthilKumar K. 3 Sharifirad M. 1 Department of Chemistry, Teacher Research Bojnord, IRAN Koohyar F. 2 Department of Chemistry, Faculty of Science, Islamic Azad University, Babol Branch, Babol, IRAN Rahmanpour S.H. 3 Faculty of Chemistry, Iran University Science and Technology, IRAN Vahidifar M. 4 M. Sharifi 1 Mechanical Engineering, Guilan University, Rasht, IRAN Shahriari B. 2 Mechanical and Aerospace Engineering, Malek Ashtar University of Technology, Shahin Shahr, IRAN > Research Paper 2012 4 7 2012 August 2 In this paper, multi-objective genetic algorithm (MOGA) is used for Pareto optimization of a four degree of freedom vehicle vibration model. Vehicle suspension design must fulfill some conflicting criteria. Among those is ride comfort which is attained by reducing the sprung mass accelerations via suspension spring and damper. Moreover, good handling or road holding capability of a vehicle which is attained by minimize front and rear suspension deflection is a desirable property which requires stiff suspension and therefore is in contrast with a vehicle with ride comfort. Therefore, Multi-objective Genetic Algorithm (MOGA) is used for Pareto approach optimization of passive suspension system. The important conflicting objectives that have been considered in this work are, ride comfort and handling performance. Moreover, this approach returns the optimum answers in Pareto form that designer can, by making trade-offs, select desired answer. Finally, the simulation result shows that optimization of suspension settings will improve ride comfort and road holding capability simultaneously Copyright@ International Science Community Association