Various deformation shapes of the vehicle body were investigated for the purpose to establish vehicie body's performance criteria which correlates well to handling performance and ride comfort. Using evaluations by experienced test driver, the fact that the rigidity of each body deformation correiated well to different dynamic performance was found. With careful verification test, simple lateral frequency response was chosen as the criteria for handling performance and vertical response was chosen for ride comfort. These were applied to the development of our recent production vehicle body. Finite element analysis simulation with these criteria helped to make new construction to meet body performance targets with minimum weight during planning-stage of the development. Also, the targets of ride comfort and handling performance of actual vehicle were accomplished with very little structural change during the testing and improvement stage of the vehicle development. The simple criterion at the frame end of actual car is explained in this paper. lt is very convenient for comparing with others or being used as body target. But this criterion does not include of regional stiffness of suspension point or sensitivity of estimation point that driver has direct touch such as seat or steering wheel. Each has large influence to dynamic performance too. So to make a better body construction, we are going to take these elements into account and make criteria much more responsible in the future.
New approach to high rigidity body construction using dynamic analysis
Neue Planungsmethode für den Bau hochstarrer Karosserien unter Einsatz der dynamischen Analyse
2003
9 Seiten, 23 Bilder, 2 Tabellen, 2 Quellen
Conference paper
English
New Approach to High Rigidity Body Construction Using Dynamic Analysis
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