CAJ | 학술논문

随着模块化造船的发展和焊接工艺水平的提高，总段合拢的方式正逐步从传统的“阶梯式”转变为“一刀齐”方式。文章运用ANSYS软件对焊接温度场和应力场进行间接耦合，对不同对接工艺下的船舶纵骨的残余应力分布进行数值模拟，得到相应的残余应力的分布规律；并把数值模拟得到的残余应力作为初始荷载施加到典型纵骨结构上进行极限承载力计算。通过对不同对接形式的纵骨结构的数值模拟和试验研究表明，不同对接形式下焊接残余应力的分布差别较大，对结构的极限强度有一定的影响，为后续的相关研究提供了可靠的依据。
수착모괴화조선적발전화한접공예수평적제고，총단합롱적방식정축보종전통적“계제식”전변위“일도제”방식。문장운용ANSYS연건대한접온도장화응력장진행간접우합，대불동대접공예하적선박종골적잔여응력분포진행수치모의，득도상응적잔여응력적분포규률；병파수치모의득도적잔여응력작위초시하재시가도전형종골결구상진행겁한승재력계산。통과대불동대접형식적종골결구적수치모의화시험연구표명，불동대접형식하한접잔여응력적분포차별교대，대결구적겁한강도유일정적영향，위후속적상관연구제공료가고적의거。
With the development of modular technology and welding procedure, the fold way of ship block has gradually changed from the ‘step joint’ to the ‘in-plane welded connection’. In this paper, the cou-pling between the welding temperature field and stress field are simulated, and the distributions of the resid-ual stress are obtained under different welding techniques. The results of the residual stress apply to the typical longitudinal to derive the ultimate strength. By analyzing the simulated results and the experiments, the distributions of residual stress are very different under different welding techniques, and the structural ultimate strength is affected. The result provides the reliable basis for follow-up study.