... in shipbuilding industries and for marine constructions. It has been developed using an explicit, fully coupled thermomechanical nonlinear finite element (FE) analysis approach. The analysis was performed to simulate the effect of three stages, namely plunging, dwelling, and welding, of the FSW process...

... that the established finite element model can accurately simulate the continuous machining process of welding-induction heating in reality, the induction heating method can actively eliminate welding deformation, and the SVM algorithm based on the radial basis function can predict the rectification result of weld...

.... This hull imitates a semiplaning boat that can be used for fast transportation of cargo from large marine vessels to shallow shores. To simulate fluid flow around this hull in calm water and head waves, as well as heave and pitch motions of the boat, CFD (computational fluid dynamics) software Star-CCMþ has...

... with a nonlinear potential flow simulation of rigid body motions. The TriSWACH is a hybrid trimaran hull form, developed using the SWATH (small waterplane area twin hull) technology, from which a single small waterplane area center hull is retained. It is designed to keep the magnitude of its motion response below...

... & offloading floating production system platform module flng design flng synthesis model floating liquefied natural gas flng platform geometry ship production midship section simulation engineering floating production storage and offloading hull dimension month 2022 evaluation subroutine...

...Mohamed R. Shouman; Mohamed M. Helal Even though past efforts in computational fluid dynamics (CFD) simulations have shown great progress in the implementation of tubercles into aero-foils and turbines blades, incorporating these tubercles into marine vertical axis propellers is still comparatively...

... to predict the delay with respect to the block erection schedule is conducted by considering the variability of the block preparation ratio based on the discrete event simulation algorithm. It is confirmed that the variation of the key event observance ratio is confirmed according to the variability caused...

...., shape nesting can be simulated by the motion of discrete bodies in a container with a fixed width. Calculation with the program developed by the authors has been performed, and the results show that the algorithm was able to achieve good compaction for the datasets, and the running time and utility...

... planing hulls have been investigated with emphasis on their better performance in calm water than that of nonstepped planing hulls. However, there are still doubts about their performance in rough water. In this study, we investigate this problem by providing numerical simulations for motions of a double...

..." model was designed providing advanced statistical methods and computer pedestrian simulations within multicriteria decision-making framework that allows optimizing conceptual designs. To reduce subjectivity, crew movement simulations and statistical methods were added to the multicriteria decision model...

...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...

...Charles R. Fisher; Lori L. Denault; Shawn Rhodes; Jonathan Finley; Yogendra Gooroochurn For the U.S. Navy, the use of computational simulations is prevalent for structural finite-element analysis but not for shop floor fabrication during construction. However, prevention and mitigation of welding...

... this tendon force and thereby reduces weld-induced buckling distortions. The weld-induced distortions are strongly influenced by the rate of heat input. Its effect on the TMT pull required to reduce the out-of-plane distortions was investigated in the present work through finite element (FE) simulations...

... approaches for the assessment of ship resistance: analytical methods, model tests in basins, and computational fluid dynamics (CFD). The rapid developments in computers and computational methods increased the opportunities for CFD to be used in the ship design process. The present article aims at simulating...

.... These are fabricated by butt welding of the plates followed by fillet welding of the longitudinal and transverse stiffeners. In thin panel fabrication, it may lead to weld induced buckling. Hence, to assess the possible behaviour during fabrication of the stiffened panels, numerical simulation is often carried out...

...Youngmin Kim; Jong Hun Woo; Yong-Kuk Jeong; Jong Gye Shin Early simulations focused mainly on virtualizing the shipyard itself and the approach in terms of production management that focuses on improving productivity was hardly sufficient. For systematically approaching shipyard production problems...

... planing hull with transverse steps in calm water have been examined. For this purpose, the vessel is free to trim and sinkage, and by using the morphing mesh approach, the numerical simulation continued until the equilibrium condition of the two-stepped planing hull is satisfied. Resistance, lift, trim...

... of Naval Architects and Marine Engineers machine learning neural network Upstream Oil & Gas Engineering prediction heating process heating line fuzzy logic heat source heating Artificial Intelligence marine transportation Simulation line heating ship production Laser Shen sheet...

...Yong-Kuk Jeong; Philippe Lee; Jong Hun Woo In recent years, shipyards have conducted various studies to accurately investigate their production capacities and improve the accuracy of their production plans. Nevertheless, frequent delays in schedules inevitably occur at production sites. Simulation...

... are simplified as ribbed surfaces with an interval w between neighboring riblets. The impact of the riblet interval w on drag reduction performance is studied both numerically and experimentally. The numerical simulation adopts the Shear Stress Transport k — ω turbulence model, and the characteristics of smooth...