... known as blocks. These blocks are individually constructed and subsequently assembled at the final workstation, denoted as the block joining station. Upon completing block fabrication, a deliberate tolerance allowance is retained on the plates to accommodate deformations induced by heat treatment during...

... deformation, while welding buckling was represented with identical behavior compared with fabrication observation. Actually, there are usually two methods to prevent welding buckling with advanced fabrication. Stiffeners with optimized geometrical features and excellent elasticity moduli were assembled...

... as rigid bodies, and investigations of the sheet metal assembly only consider the elastic deformation caused by xtures (Camelio et al. 2003). These studies either did not 154 AUGUST 2023 0022-4502/20/393-0154$00.00/0 JOURNAL OF SHIP PRODUCTION AND DESIGN involve welding process or disregarded the welding...

... workpiece reservoir surveillance aluminum mining month 2022 journal production logging production control simulation ship production and design fsw mpa thermocouple international journal interaction interface aa5083 plastic deformation welding metals & mining ship production...

...Yulong Feng; Yujun Liu; Ji Wang; Rui Li _ To effectively realize the welding deformation rectification of high-strength steel fillet-welded joints in hull construction, a traveling induction coil was used to research the rectification effect of the welding deformation, and the support vector...

... ship production hull thickness may 2022 milling process deformation spindle Copyright 2022, The Society of Naval Architects and Marine Engineers 4 10 2019 8 10 2021 8 10 2021 2 3 2022 13 5 2022 Journal of Ship Production and Design, Vol. 38, No. 2, May 2022...

...Rui Li; Wang Ji; Yujun Liu; Jiangtao Wu; Xiao Liu As a new technique for the deformation of aluminum alloy plate with complex curved surface which is used in shipbuilding, electromagnetic force assisted line-heating process, or EFALH for short, can promote forming efficiency and produce anticipated...

..., wrinkling, and even crack initiation. This problem should be solved in ship production. In this study, cold bending experiments and finite element simulations were performed to analyze the deformation characteristics of curved frames with cutouts. A fabrication method is proposed to control the deformation...

... on the prediction of cutting and welding deformation based on engineering experience. Its main limitation is that the propagation and accumulation of deviations in the whole building process are neglected. In this article, cutting errors, assembly deviations, welding shrinkages, turnover distortions, and thermal...

..., heating velocity, and the arrangement of heating line. Previous studies on this, which considered only local shrinkage, produced large errors in the calculation of thick and large curvature plates because the whole deformation was ignored. In this article, new mathematical formulas are proposed...

... of line heating by an artificial neural network. They also proposed a comprehensive algorithm for automatically curving plate by line heating, and further developed an application system that can simulate the deformation of double-curved plates (Shin et al. 2004a, 2004b). Liu et al. (2006) applied...

...Junghyun Lee; Wooyoung Choi; Minseok Kang; Hyun Chung This article proposes a variation simulation and diagnosis model for ship block assembly processes considering the effects of welding distortion. The welding process and the deformation pattern affecting the final shape of a block assembly...

... reduced on application of TMT to a welding process, reducing the tendency of plate buckling due to welding. In the present work, an artificial neural network (ANN)-based modeling of the TMT process was also carried out to predict the weld-induced out-of-plane deformation for different rates of heat inputs...

... and verified using experiment results, was used to study the deformation distribution of a plate corresponding to different heating line spacing. This paper presents the results based on a single-torch and multiple-torch process. The deformation distributions in the heating and nonheating regions were analyzed...

... computational time heating line ship production deformation equation Journal of Ship Production and Design, Vol. 34, No. 4, November 2018, pp. 279 309 httpdx.doi.org/10.5957/JSPD.160030 Journal of Ship Production and Design A Computer Simulation Model for Thermal Forming of Ship and Offshore Structures...

... heating cannot be readily used for an automated thermal forming system because of a limited range of plates that the method can handle, and undesirable deformation on the boundary such as "over-bending" and buckling when the plate is heated using the computed heating information. Therefore, a lot of man...

... sources. Oxy fuel gas flame: It is one of the cheapest and readily available heat sources. For obtaining precise control over deformation, there should be ease of control on the amount of heat flux. Poor control of heat flux is obtained from mixed gases (for oxy fuel gas) as it is difficult to control...

.... The lug width was decided based on the possible width of the tensile stress zone due to the welding of stiffener. The tensioning lugs were heated to a temperature so that the plastic deformation of the lugs are minimized thereby required tensioning of the plate could be achieved. Through...

... be successfully compensated for by a combination of finite element analysis (FEA) and the displacement adjustment method. The deformation history of a moving plate on each division was simulated while carefully considering the movement toward a contacting boundary. The displacement adjustment iterates...

...Xuebiao Zhang; Cheng Chen; Jiaqin Li; Yujun Liu In this article, the line heating forming technology by using the moveable induction heating is used to form a concave-type plate. In shipyard, it is necessary to get a bigger contraction deformation at the plate edge for the concave plate. However...