Stress & strain character of tube hydroforming and its application in processing analysis

The mechanical character for tube hydroforming stress state of is discussed in this paper and the special stress states was classed by those discussed characters. For the mechanical character of tube hydroforming, tube hydroforming stress state was discussed with different families. Tube hydroforming stress state discussion was important in process analysis of tube hydorforming, it can determine what kind of component we get. Mechanical stress state character discussed can be used in the optimization of tube hydroforming and achieve proper component. The essence of tube hydroforming technological parameter choosing is procedure of analysis and optimization of the stress state.