On the characteristics of automotive low arm-suspension system parts made of aluminum casting alloys

Abstract

Stress behaviour of the vehicle suspension system has received much attention in recent years due to its effect on life time of different parts, especially lower suspension arm. These stresses can be reduced by optimizing and design variables of automotive lower arm suspension system as well as its materials metallurgical parameters. The high strength-to-weight ratio of aluminium casting alloys makes them materials of choice. The studied model is selected to be close to real operation of automotive suspension system. The main objectives of this study are to propose the proper variables required in design of suspension system parts and to reduce the stresses on lower arm-suspension system by materials and design optimum selection. The agreement of the vibration model of vehicle, design variables for optimization and the materials selection validates its positive effect on the mechanical and quality performance of applied parts made of aluminium alloys.

Keywords:

• Automotive suspension system
• Materials design
• Quality index
• Aluminium alloys