1974-02-01

Design Criteria for the Dent Resistance of Auto Body Panels 740081

One solution to the problem of spiraling automotive weights is the substitution of thinner high strength steels or thicker aluminum alloy outer body panels. In doing so the dent resistance of these panels must not be sacrificed. This study investigates the dent resistance of doubly curved rectangular panels in various steels and aluminum alloys. Dent depth on the order of magnitude of the panel thickness was studied. An empirical equation is developed that relates dent resistance to the yield strengths, metal thickness, and panel geometry.

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