p01900 - Numerical Simulation on XIALI Car Dynamic Response...

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Numerical Simulation on XIALI Car Dynamic Response Zu Wendong , Wang Yan, Li Jingzhan Tianjin Automobile Research Institute, Tianjin, China Tel:022-27030703 Email: [email protected] ABSTRACT Based on the white body’s finite element model, the dynamic response finite element model of TJ7100 car created with MSC.Patran and MSC.Nastran. The body response power spectral density (PSD) is calculated under real road PSD and compared with test result. The finite element model is reliable and can be applied to car response evaluation. Keyword Finite Element, Dynamic Response, Spectral Analysis
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INTRODUCTION With the rapid development of vehicle CAE application, the main job of vehicle evaluating engineers has been transferred from evaluation of physical prototype to virtual evaluation of digital model during design phase in vehicle industry. By this way, times of physical prototype trial-manufacture is decreased and developing period is shortened. In order to improve product development ability, we have introduced CAE technique for dynamic response evaluation of our product (TJ7100, a model of XIALI car). CREATION OF WHOLE VEHICLE MODEL After simulation analysis calculation of white body FE (finite element) Model and comparing the calculation result with that of test, one can find out that the white body FE Model is reliable. In order to calculate dynamic response under random input, we have to create a precise whole vehicle FE model base on white body FE Model by introducing doors, hood, chassis assemblies, engine, electric accessories and passenger etc. MSC.Nastran is adopted for creation of the model in which concentrate mass element rigid bar element, damping element and spring element are used to simulate some vehicle parts, passenger and suspension system. The model is shown in Figure 1. VERIFICATION OF THE WHOLE VEHICLE MODEL
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This note was uploaded on 05/24/2010 for the course MEC 7658h taught by Professor Madder during the Spring '10 term at Punjab Engineering College.

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p01900 - Numerical Simulation on XIALI Car Dynamic Response...

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