The present invention relates to a technology to which a panel with a surface of a non-zero Gaussian curvature is applied to secure dynamic stiffness of a chassis floor panel. The present invention realizes a floor panel, to which a new surface of a non-zero Gaussian curvature having a symmetrical convex structure of a panel X-direction (panel width direction) and a concave structure of a panel Y-direction (panel length direction) is applied, thereby increasing stiffness by minimizing the contact area of a load applying part. Thus, the present invention secures the whole dynamic stiffness of the chassis floor panel.;COPYRIGHT KIPO 2016
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