Multi-body dynamics-based sensitivity analysis for a railway vehicle

• DOI: 10.1177/0954409713519086
• Publication Date: 2014-01-24T02:01:53Z
• Authors: Guofu Ding; Yong He; Yisheng Zou; Rong Li; Xiaojia Ma; Shengfeng Qin
• Keywords: Bridge (graph theory); Optimal design

A railway vehicle is a complicated mechatronic system. Its mechanical structure and connections are key influences on its performance. When runs at very high speeds dynamic performance becomes of considerable interest. Therefore, the identification design factors that significantly impact vehicle’s running behavior, such as safety, stability, comfort reliability, step towards optimization. The optimal difficult to perform using existing methods due complexity inherent in rail/track interactions. Thus, performing sensitivity analysis can be seen bridge between an design. This paper presents model used analyze parameters terms variation parameters. First, described multi-body system broken down into component parts then, behavior investigated. To simplify model, spring/damper connection classic Hertz nonlinear elastic contact represent force normal direction wheel/rail point. Finally, based adjoint variable method, equations constitute derived software developed. case study shows reliability proposed approach.