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

考虑热过程物理现象的船舶巨型结构的精确热制造

• 批准号: 23360384
• 负责人: MOCHIZUKI Masahito
• 金额: $ 11.07万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360384/
• 关键词: 建造・艤装; 切断・溶接・矯正; 溶接変形; プロセス物理; 溶接力学

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.

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。

项目成果

Micro-, Macro-, and Mega-Scale Structural Analysis of Welded Components by Using Numerical Simulations and Their Experimental Validations in Japan

在日本使用数值模拟及其实验验证对焊接部件进行微观、宏观和巨型结构分析

• 发表时间: 2013
• 作者: Yasunori Takemura;Kazuo Ishii;M. Mochizuki
• 通讯作者: M. Mochizuki

Analysis of SCC Initiation and Propagation Based on Probabilistic Fracture Mechanics Under Residual Stresses by Machining and Welding Processes of Pipes

基于管道机加工和焊接过程残余应力下概率断裂力学的 SCC 引发和扩展分析

• 发表时间: 2013
• 作者: 中山喜之;安川宏紀;平田法隆;M. Mochizuki
• 通讯作者: M. Mochizuki

熱源後方に冷却を伴う突合せ溶接中に生じる面内回転変形に及ぼす収縮変形の影響

热源冷却对焊过程中收缩变形对面内旋转变形的影响

• 发表时间: 2011
• 期刊: 溶接学会論文集 Vol.29, No.2
• 作者: 岡野成威;望月正人;豊田政男;上山智之
• 通讯作者: 上山智之

Experimental Study on Effects of Root Gap and Fillet Size of Welds on Joint Strength

焊缝根部间隙和圆角尺寸对接头强度影响的试验研究

• 发表时间: 2013
• 期刊: Quarterly Journal of Japan Welding Society
• 作者: 田川雅人;横田久美子;吉越章隆;寺岡有殿;D. Sugitani and M. Mochizuki
• 通讯作者: D. Sugitani and M. Mochizuki

Effect of Welding Conditions on Reduction of Angular Distortion by Welding with Trailing Heat Sink

焊接条件对尾随散热器焊接减少角变形的影响

• 发表时间: 2012
• 期刊: Science and Technology of Welding and Joining
• 影响因子: 3.3
• 作者: S. Okano;M. Mochizuki;M. Toyoda and T. Ueyama
• 通讯作者: M. Toyoda and T. Ueyama