Precise Thermal Fabrication of Ship Mega-Structures Considering Phenomena of Thermal Process Physics

热加工工艺，如等离子切割，气体切割，电弧焊接，激光焊接，或矫直诱导热和残余变形。 这些变形对提高船体制造精度有很大的影响，因此，对船体热变形和残余变形进行精确的预测和控制是船体制造的重要技术之一。 为了有效提高热加工过程中的加工精度，本研究发展了“热加工物理学”和“热加工力学”的混合方法。 此外，“微观过程物理学”，“宏观热过程力学”，“宏观结构力学”之间的多尺度联动考虑组装顺序与简化，通过使用固有应变方法实现了焊接结构的更高的精度和鲁棒性的条件。

Thermal fabrication processes such as plasma-cutting, gas-cutting, arc-welding, laser-welding, or straightening induce thermal and residual distortion. Improvement of fabrication accuracy strongly depends on these distortions, therefore precise predicting and controlling method of thermal and residual distortions must be one of the important technique for ship-building. Hybrid method by using "thermal process physics" and "thermal process mechanics" has been developed in this research in order to effectively improve fabrication accuracy during thermal fabrication process. Furthermore, multi-scale linkage among "microscopic process physics", "macroscopic thermal process mechanics," and "megascopic structural mechanics" considering assembling order with a simplification by using inherent strain methodology achieves the condition of higher accuracy and robustness in welded structures.