Search Results

As a new vehicle is based on common vehicle platform, the durability problems of chassis components in development stage are decreasing. However a vehicle body structure is changed by exterior design and a chassis and a suspension are tuned by vehicle performance targets. The main issue on developing a new vehicle is to satisfy the durability target of a body structure and tuned suspension components. The accuracy of durability Computer Aided Engineering analysis is mainly depending on the accuracy of input loads and boundary conditions on suspension system. The input loads should be estimated accurately. These could be changed by vehicle specifications such as vehicle weight, wheel base and so on. It is also affected by the change of suspension types and tuning parameters. This paper presents the experimental parametric study results using road load data analysis techniques.

The recent improvement in CAE and testing technologies of vehicle structures could reduce the development time of new vehicle chassis platform. Moreover, it is important to validate the durability of a new chassis platform before making new prototypes. However, it is difficult to satisfy durability target for this new platform before the prototype phase. The optimized durability test modes of suspension components under the multi-axial road load could help to evaluate durability on the early phase of vehicle development. In this study, the RLDA (Road Load Data Acquisition) and DFSS (Design for Six Sigma) techniques are used to identify the principal loading from the applied multi-axial load on suspension components. This paper presents more efficient way for the determination of durability target of suspension components. Further more, the verification are described by comparing the results of component tests with that of a rig full vehicle durability test.