Theoretical Study on Forming of Twisted T-section Longitudinal (1st Report)-Investigation from Aspect of Inherent Strain-
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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 first part is to determine the type and location of inherent strain required to achieve the desired shape. The second part is to determine proper heating conditions to attain the above inherent strain. This report deals with the first part, wherein a study has been undertaken on the inherent strain field required to achieve the desired shape of a twisted 'T' section longitudinal using elastic FEM analysis. Information based on the above can be used to determine the forming procedure.
- Trans. of JWRI
Trans. of JWRI 30 109-116, 2001