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搜索结果: 61-75 共查到知识库 船舶建造工艺相关记录163条 . 查询时间(2.245 秒)
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 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...
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...
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 ...
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...
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...
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...
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...
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...
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...
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...
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...
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。
浅谈潜艇降噪技术     潜艇  降噪技术       2009/3/18
目前反潜技术发展到比较高的水平,潜艇受到的威胁增加,但潜艇技术也同时获得长足的进步,尤其是噪声治理得较好的潜艇仍是各国在战争中最具威胁力的武器。潜艇之所以有这样高的地位,就在于它的隐蔽性,而影响潜艇隐蔽性的主要因素是辐射噪声。目前,探测潜艇的最有效的办法仍然是使用水声设备,尤其是被动声纳。试验表明,艇的辐射噪声降低6分贝时,敌方被动声纳的作用距离将降低50%。因此,如何降低潜艇的辐射噪声,提高潜艇...

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