...Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-81-4; ISSN 1098-6189 www.isope.org Research on Ship Structure...

... alloy model with three holds. Distributed optical fiber sensors and fiber bragg grating sensors are used to establish a monitoring system. The deformation form, stress distribution, and ultimate strength of ship structure in waves are obtained. The results show that out-of-plane distortion increases...

... in different types of welded plate joints of ship structures. INTRODUCTION Welded plate joints are widely used in ships and marine structures. The weld defects or crack-like flaws usually initiate at the weld toe region and gradually grow as semi-elliptical surface cracks. Accurate stress intensity factor...

... ABSTRACT In this study, we introduce an efficient vibration analysis technique for ship structures employing the algebraic dynamic condensation (ADC) method. In the ADC method, the stiffness and mass matrices for the considered FE model are automatically partitioned into small size of matrices...

... ABSTRACT Extreme wave used to damage ship structures in the ocean by generating buckling midship due to huge wave height. In this paper, a hydroelasto-buckling ship model test is carried out to study the dynamic ultimate strength of the ship structure in regular wave, the effect of extreme...

... ABSTRACT This paper addresses experiment and finite element simulation studies on small-scaled single side ship structure quasi-statically punched at the mid-span by a conical indenter and a wedge indenter with tip radius, which is intended to examine the fracture and energy dissipation...

... ABSTRACT The intersection between longitudinal and transverse bulkhead is one of the typical ship structures which are prone to fatigue during ship voyages. Generally, longitudinals in ship structures adopted are mainly bulb flats, and for the sake of simplifying the finite element model...

... ABSTRACT Fatigue crack propagation behavior in bulb stiffeners, which are widely used in ship structures, is indispensable information for ship structures' fatigue life prediction. This paper aims to provide reasonable simulation process for the fatigue cracks propagated in bulb stiffeners...

... ship hull girder bearing platform transverse swath progressive collapse analysis outer shell ship structure marine transportation nonlinear finite element method element method smith method ultimate strength shipbuilding complex loading condition nonlinearity loading path...

.... Introduction In conventional strength assessments the safety of structures is considered under maximum static loads, i.e. the design loads. However, ship structures are to a large extent affected by stresses varying over time. These stresses are mainly caused by the seaway, by propulsion plant excitation...

... degradation model is expected in the following analysis. fe analysis ship structure transversal direction connection type experiment failure mode initial failure ultimate failure load evolution fe simulation adhesive fiber-matrix shear failure sandwich l-joint strength stiffness...

... Abstract The uncertainty of design variables is incorporated to design optimization of ship structure. Since conventional double loop strategy for probabilistic design optimization involves iterative optimization process and probabilistic assessment, a strategy of reliability-based design...

... of the reliability of items of mass production, for ship structures unsuitable, as is needed to implement uniform statistical information about the failure. Such information is difficult to obtain for objects manufactured as single copies or small series and operated in significantly different conditions. In most...

... Abstract In the construction of ship structures, welding deformation causes various problems. To reduce welding deformation, analyses by the finite element method (FEM) are very useful. However, in a ship structure, the computing scale becomes enormous and so the prediction of welding...

... of the study is to analyze the airflow properties in the confined spaces of the ship structures with the aid of the network simulation technique which is widely used for an airflow analysis in high-rise building to establish the ventilation plan. The results of this study will finally show the airflow...

... In the present study, damping model used for vibration response analysis of large ship structures is focused on. At first, an exciter test of VLCC was carried out in order to acquire a high resolution frequency response function. Then experimental modal analysis was carried out to identify the modal damping...

... Abstract It is very important to define the procedure and boundary condition setting in experimental programs to simulate the response of ship structures under accidental loading conditions, such as in collision scenarios, to obtain the reliable results. The present paper aims to identify...

... constraint condition stiffener bottom plate genetic algorithm calculation method artificial intelligence optimization structural optimization load condition fem model optimization problem node stiffness matrix ship structure growth operation A Study on Optimization the Structure of Ship...

..., Gothenburg, Sweden Igor Rychlik Department of Mathematical Sciences, Chalmers University of Technology, Gothenburg, Sweden ABSTRACT Fatigue damage accumulation in ship structures is a continuous random process, which together with several sources of uncertainties in the fatigue analysis make the fatigue life...

... ABSTRACT: The distribution of rainflow cycle ranges for fatigue design of ship structures is often obtained from classification rules as an empirical formula in terms of ship geometry, trade regions, etc. It is well-known that this method includes large uncertainties. In particular, it cannot...