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Effect of Column Spacing On Wave Force Considering Structure Motion
Morison’s Equation Multiple Pile Transfer Function Columns Optimum Spacing Regular Array Irregular Array Variance Maxima
2009/5/19
The study is of an offshore structure consisting of slender columns near the free surface and large buoyancy pontoons near the base that is moored to the sea bottom like a Tension Leg Platform. The ef...
A Study on Fatigue Strength Assessment of Welded Structures with Cruciform Joints
Cruciform Joints Weld Joint Ship Structure Fatigue SN Curve Hot Spot Stress Finite Element Analysis
2009/5/19
A large number of cruciform joints can be found in ship structures, but it is generally known that it is not clear how FEM stress output ought to be used and how FEM input ought to be prepared for fat...
Development of User-Friendly Generalized Optimization System
Nonlinear Programming SQP GA CORBA Ship Design
2009/5/18
This paper describes recently developed general-purpose optimization system, in which users are able to set up the optimization problem without knowledge of system coding. Currently two optimization a...
Prediction of Propulsive Performance of High-Speed Boats using a CFD Simulation Method (1st Report)
CFD Simulation High-Speed Boat Running Attitude Resistance Coefficient
2009/5/12
The applicability of CFD simulations for the prediction of the propulsive performance characteristics of high-speed boats is examined. In this report, a CFD code, WIDSAN-VIII, is used for simulations ...
A Study on Viscous Effects of Roll Damping for Multi-Hull High-Speed Craft
Viscous Effects Roll Damping Multi-Hull High-Speed Craft
2009/4/29
The roll damping plays a very important part of amplitude of roll motion in resonance and trigger of parametric rolling of a ship. Since the viscous damping components are usually dominant in the roll...
An experimental study on roll instability of high-speed boats
experimental study roll instability high-speed boats
2009/4/29
Using two hard chine boat models, a torpedo boat with broad span and a passenger ferry with narrow span, fundamental data related to roll instability is obtained from static and dynamic inclining test...
A Study on Knowledge Transfer System in Shipbuilding- Knowledge Acquisition Support System
shipbuilding industry UT-ESS shipbuilding industry
2009/4/29
It's getting more important to transfer knowledge from elder experts to young engineers especially in shipbuilding industry in Japan. We developed knowledge transfer system based on UT-ESS (University...
Study on Automatic Position Adjustable Elevator for Workboat
Automatic Position Adjustable Elevator Workboat
2009/4/29
The paper is concerned with an automatic position adjustable elevator to realize easy and safe passage between a workboat and a floating structure or an ocean platform. The elevator attached to the wo...
Improvement on the Fatigue Life of Welded Joints by the Synergy Effect of Ultrasonic Impact Treatment and Steel with High Resistance to Fatigue Crack Growth
Fatigue Life Welded Joints Ultrasonic Impact Treatment High Resistance Fatigue Crack Growth
2009/4/16
The extension of the fatigue life of welded joints has been in demand to improve the safety and reduce the life cycle cost of ships.To meet such demand, it is effective to apply post-weld treatments w...
Influence of Weld Heat Input and Texture of Base Metal on Brittle Crack Propagation Behavior along Welded Joint-Numerical Simulation of Brittle Crack Propagation along Welded Joint (2nd Report)
Brittle Crack Propagation Behavior Brittle Crack Propagation Welded Joint
2009/4/14
In the previous paper, influence of applied stress, residual stress and toughness of welded joint on brittle crack propagation was analyzed based on a fracture mechanics model developed by the authors...
Optimization of Arrangement of Longitudinal Stiffeners on Shell Plate at Fore and Aft Parts of Vessels
Longitudinal Stiffeners Shell Plate Vessels
2009/4/1
Since the hull form of ship gets slim at fore and aft parts, the arrangement of longitudinal stiffeners on curved shell plate at the parts is difficult compared with midship part. The design of longit...
Optimization of Torch Movements of Welding and Cutting Using Ant Colony Method
Optimization of Torch Movements Welding Cutting Ant Colony Method
2009/4/1
Though many methods are applied to solve the combinatorial optimization problem, there are many cases in which the solution can not be solved in practical computation time, even if the computer become...
西方古帆船的主尺度与结构---古帆船模型制作系列文章之二
西方古帆船 主尺度 结构 古帆船模型制作
2009/3/19
舰船爱好者都知道,舰船主尺度是表示舰船船体外形大小的基本量度,通常包括船长、船宽、船深等等,古帆船由于其构造形式与现代舰船有较大差异,其主尺度的一些解释也不同于现代舰船,现以勃兰登堡公国 于1674年建造的小型护航舰“柏林”号为例加以说明。
制作船模用胶粘剂简介
船模 胶粘剂
2009/3/18
制作船模用什么胶最好,这是很多初学制作船模者所关心的问题,用什么胶是由制作船模的材料决定的。
所以首先制作者需要决定的是用什么材料来制作船模,可供选择的材料除金属(铜皮或铁皮及其管、线材)外,尚有塑料、有机玻璃、纸板及木材等,用金属制作船模大多采用焊锡进行锡焊,但也有些零部件常采用胶粘剂进行粘接,其它材料则主要靠胶粘剂进行粘接,当制作者选定制作的材料后一般就能从下面介绍的几种胶中找到所需要的胶。