Abstract
KEYWORDS –Couple Torsion Beam Axle, Suspension, Geometry, Chassis Behavior, Load Transformation Matrix
ABSTRACT
The torsion beam type of rear suspension has been adopted by most manufactures of small to medium front wheel drive passenger cars. The cross beam holds the two trailing arms together, and provides the roll stiffness of the suspension, by twisting as the two trailing arms move vertically, relative to each other. The most important durability factors for couple torsion beam axle suspension are the force and direction of rear trailing arm. If there are design changes, it was difficult to make a sensor and install each time for measuring the trailing arm forces. This approach provides a methodology for predicting multiple loads. This paper analyzed the results of measurement after measuring loads and displacements, angles when a car equipped with the coupled torsion beam axle is driving in various roads. After analyzing the loading histories between body and chassis, we developed the transformation matrix that can be converted to mutual force. In this paper, multiple load input prediction technique will be described as load transformation matrix based on experiments. The results indicate that the technique will be effective as a replacement for field car tests and design phase in automotive development process.