作者: Robert T. Crandall
DOI:
关键词: Geometry 、 Roll forming 、 Structural engineering 、 Front (oceanography) 、 Geology 、 Line (geometry)
摘要: A roll formed step rail for a vehicle comprises an elongated body including continuous wall of substantially uniform thickness. The describes cross-sectional profile between two free edges, the being along length body. includes relatively flat top portion disposed semi-circular front curved and quarter-circular rear portion. mounting lip extends forward from to one edges. upward then rearwards another edges are generally in line with another, but spaced apart define longitudinal channel therebetween having predetermined width. is sheet material by process forming.