Optimum Material in Body Weight Reduction for Domestic Passenger Car (2nd Report, Selection of Applicable Material for Future Automotive Body Using Data Envelopment Analysis)

摘要

In case of the substantial weight reduction of a passenger car, it is inevitable to reduce the weight of its body structure to a great extent. As the body structure has been rationalized by using computer aided engineering to a considerable extent, it will be necessary to switch the body material from steel to lightweight material. Aluminum, a typical one of the lightweight materials, having been said most suitable alternative, it hasn't been recognized to be one because of its economics. In this paper, we show numerically that partial aluminumization of the steel body to 2 extent of the proposed vehicle weight is superior to steel one in customer satisfactory efficiency through the extensive use of Data Envelopment Analysis.