This paper mainly proposes simplified prediction procedure of temperature and deformation behavior for ship hull plate by moving thermal process. Maximum temperature Tum, dimensions (breadth b and depth h) of inherent strain zone (ISZ) are firstly introduced to evaluate thermal forming behavior. Then non-dimensional technological parameters for Tum, b and h are derived based on dimensional analysis, which are subsequently utilized to analyze critical factors through parametric correlation analysis, respectively. Finally, non-dimensional predictions for Tum, b and h are carried out by multi-variable regression, respectively, and utilized to calculate bending angular deformation θ_(xInhs) based on inherent strain method. Therefore, we can prevent material mechanical degradation from overheating in advance, and improve dimensions of ISZ through adjusting technological parameters. It can be concluded that the proposed procedure can excellently predict Tum, b and h within maximum deviations of 6.95%, 6.63% and 9.70%, respectively, and calculate bending angular deformation θ_x with less time to achieve automatic forming.
展开▼
