Abstract
In order to realize the computer simulation of twisting process of a T-shape ship longitudinal frame, the estimation technique of the temperature history within the T-shape frame during a repetitive heating is developed. Heat input during gas heating is evaluated by using the distributions of gas temperature and local heat transfer coefficient obtained in spot heating tests. These distributions are identified by the inverse heat conduction technique developed by Tomita et al. (2002). The accuracy of the heat input estimation shown by comparing the calculated and measured temperature distribution during a repetitive circular heating test. The temperature history calculated by the developed technique is used as the thermal boundary condition in the thermal-elasto-plastic F.E. calculation of the frame torsional deformation.
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