The widely adopted the high strength steel tube is an important way to solve lightweight body and collision safety. traditional pressure hydroforming hot gas forming through “expansion” deformation form hollow parts, internal driving force. There are some industrial difficulties such as heavy dependence on pressure, wall thickness thinning low production efficiency, which limits application of ...

A study was performed to analyze different methods of manufacturing a full scale car frame for the Smart Cities Citycar, a folding electric vehicle being designed at the MIT Media Lab, as well as a half-scale prototype for testing driving and folding systems. Through looking at two case studies for similarly sized automobiles as well as analyzing the compatibility of metal casting, stamping, co...