An Experimental Study on Dynamic Characteristics of Twin Accumulator Suspension System

Abstract

Hydro-pneumatic suspension system can meet the engineering vehicle demand because of its excellent nonlinear stiffness characteristic and good vibration reduction characteristic, the use of hydro-pneumatic suspension system is becoming more and more widespread in the engineering vehicles. In this paper the behavior of the twin-accumulator suspension is studying over the conventional passive system focusing on ride quality behavior. The optimum solution was obtained numerically by utilizing a multi-objective evolutionary strategy algorithm and employing a cost function that seeks to improve the ride comfort indicated parameters such as the root mean square, the suspension displacement and the dynamic tire load. The simulation results of passive and optimized twin accumulator suspension consisted of body displacement, wheel deflection; vehicle body acceleration, suspension travel and dynamic tire load were compared and analyzed. Results show that the twin-accumulator suspension system gives improvements in ride behavior in compression with the conventional passive suspension system.