Development of Lighter-Weight, Higher-Stiffness Body for New RX-7

Masanori Takamatsu; Hideharu Fujita; Hitoshi Inoue; Mitsutoshi Kijima

doi:10.4271/920244

1992-02-01

Development of Lighter-Weight, Higher-Stiffness Body for New RX-7 920244

To realize high levels of handling, driving performance, and NVH characteristics for a sports car, it is important to develop a lightweight and high-stiffness vehicle body. For the new RX-7, weight saving and higher stiffness were pursued as top priorities from the very first stage of the program. We were able to achieve 20% higher bending stiffness and 15% higher torsional stiffness with vehicle weight reduced by 30 kg, compared with the former model.

The development of the lightweight, high-stiffness body for the new RX-7 is discussed under three subjects:

1.
Contributions of vehicle components to vehicle stiffness
2.
Effective procedure for developing vehicle high stiffness and lightweight construction with emphasis on calculation analysis
3.
New RX-7's body structure and accomplishment

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Development of Lighter-Weight, Higher-Stiffness Body for New RX-7 920244

SAE MOBILUS