Otimização de parâmetros concentrados de suspensão para conforto e segurança veicular / Optimization of lumped parameters of suspension for vehicle comfort and safety

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

2012

RESUMO

The present work evaluates the optimization of lumped parameters of suspension on vehicles and considers the importance of this process to minimize the rms vertical acceleration transmitted to ensure comfort and safety to the driver. Thus, this work aims to develop a model able to represent the whole vehicle and, then, optimize the parameters of stiffness and damping in the frequency domain and identify, around the optimal point, those parameters which most influence in this minimization. To achieve these goals, two vehicle models (with two and eight degrees of freedom respectively) are proposed according to the guidelines of the standards BS 6841 (1987), ISO 8608 (1995) and ISO 2631 (1997). The models are linearly analyzed and optimized by a heuristic algorithm of particle swarm. Finally, the results of stiffness and damping of suspension are obtained and reduces up to 35,3% of rms vertical acceleration transmitted to the driver. Through a sensitivity analysis, the design variables that most contribute to this reduction are identified.

ASSUNTO(S)

otimização matemática vehicle model frequency domain motoristas comfort veículos vibração safety particle swarm optimization

ACESSO AO ARTIGO

Documentos Relacionados