Theoretical Study on Forming of twisted T-Section Longitudinals (1~st Report): investigation from the Aspect of Inherent Strain

摘要

Twisted 'T' section longitudinals, like curved plates, are formed in shipyards using a combination of mechanical methods and line heating. The required three-dimensional shape is attained by plastic strain during the process. Thus any analysis of the above forming process can essentially be divided into two parts. The fist part is to determine the type an location o inherent strain required to achieve the desired shape. The second part is to determine proper heating conditions to attain the above inherent strain.