搜索结果: 46-60 共查到“知识库 船舶保养、修理和拆船工艺”相关记录63条 . 查询时间(3.174 秒)
Fully Automatic 3-dimensional Hexahedral Mesh Generation- Improved Whisker Weaving Method with Surface Mesh Modification Procedure
Hexahedral Mesh Generation Whisker Weaving Method Surface Mesh Modification Procedure
2009/4/30
In this paper, a new strategy of fully automatic hexahedral mesh generation is proposed. In this strategy, the prerequisite for generating hexahedral is quadrilateral surface mesh. From the given sur...
Effect of Corrosion on Static Strength of Hull Structural Members (9th Report)
Corrosion Static Strength of Hull Structural Members DOP
2009/4/29
The aim of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present s...
Effect of Corrosion on Static Strength of Hull Structural Members (8th Report)
Static Strength Hull Structural Members DOP
2009/4/29
The purpose of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present...
Effect of Grooving on Static Strength of Fillet Welded Joint for Ship Structure under Compressive Stress Condition applied by bending moment (2nd Report)
Fillet Welded Joint Corrosion Grooving Local Strength of Ship Structure Static Strength
2009/4/29
Corrosion of structural members of ships is one of the main problems for ship safety.
In this report effect of grooving on static strength of corroded fillet welded joints for ship structure is inves...
Experimental Study on Reentry Operation of a Flexible Marine Riser by Gain-scheduled Control
experimental study Reentry Operation Gain-scheduled Control
2009/4/29
The reentry operators of the flexible marine riser are required to connect its bottom end to the blowout preventer at the seabed with both its top connected angle and its deformation controlled. Becau...
Research and Development of Biodegradation Disposal for SBS (Sugi Bark Sorbent)
Biodegradation Disposal SBS
2009/4/29
Sugi bark sorbent (SBS), which is recycled waste, is comparable to commonly used petroleum products in performance and cost and has lower environmental loads. It has been commercially produced since 2...
Change in Safety Level against Collapse of Ship's Hull Girder in Longitudinal Bending According to Change in Design Criteria
Safety Level Collapse of Ship's Hull Girder Longitudinal Bending Design Criteria
2009/4/27
Choosing four Panamax-size bulk carriers and four Aframax-size oil tankers designed by different criteria in different times, reliability analysis has been performed to compare their safety levels fro...
护卫舰船的动物“特工”
护卫舰船 动物“特工”
2009/3/17
1991年初的海湾战争，美国向波斯湾海域调集了大量的作战舰艇。为了保护这些舰艇的安全，美国还在海湾地区部署了一支全部由海洋哺乳动物组成的“特种部队”，共屯积了3个海豚基地。这些经过严格训练的“特工”们，不仅担负着探测水雷的任务，还包揽了整个海上舰队的水下警戒，为美国舰队的安全立下了汗马功劳。
船舶中梁的裂纹振动诊断方法
结构振动 传递矩阵 裂纹诊断
2009/3/4
板、梁是船舶的基本构件，如果梁和板产生裂纹，将会导致船舶失事。当梁出现裂纹时，其刚度会随之发生改变。为此，基于振动诊断方法，本文首次将修正的线弹簧模型，引入到铁木辛柯梁传递矩阵法中，计算出梁损伤前后的振动信息。利用振动信息，本文提出振型差值曲率方法，来诊断梁的裂纹位置和裂纹深度，经研究证明，此方法可供梁的裂纹诊断参考。
金属陶瓷舰船专用超级润滑油
金属陶瓷 超级润滑油 舰船专用润滑油
2008/11/3
该课题依靠固体润滑材料金属陶瓷润滑的机理，将固体润滑材料金属陶瓷应用于润滑油产品，解决了金属表面临界温度时的摩擦难题；通过加入新的添加剂和使用新的混配加工技术改变了产品结构。从而增强了润滑效果，促使燃料完全充分燃烧，输出功率增大，燃料消耗减少，大幅度降低了废气排放，获得极佳的环保效能。产品具有清洗引擎、积碳和污油等的功能，本产品达到了国际领先水平，填补了我国国产船用系统油的空白。通过检测和用户实际...
“滑板式移位法”修船新技术研究及应用
修船 滑板式移位法 新技术
2008/9/28
开发一种“滑板式”新工艺技术，以达到拉开船体接长的目的，课题的依托工程是韩国3000吨级油轮“别特明釜山轮”，进行船体改装，将该船船长70.85m接长到83.45m，型深4.75m加高到6.03m，并且增加一道横舱壁和一只400吨液罐，整个首楼甲板抬高1.2m。在采用“滑板式移位法”船体施工工艺进行船体改装过程中，课题组用下水横梁、滑道和所研制的工装，解决了这项施工周期紧、技术难度大的施工项目。其...
船舶结构直接碰撞损伤机理研究
碰撞 船舶 仿真 结构损伤
2008/7/17
本课题首先对船舶碰撞外部动力学的两种研究方法进行了系统地整理和讨论。基于二维运动假设的解析方法给出了一套计算碰撞后能量耗散和碰撞冲量的闭合型公式系统。基于瞬态运动议程时步积分的数值方法考虑了碰撞力随撞深的变化规律。还对上述两方法中存在的局限和问题进行了详细分析。对典型的集装箱船双壳舷侧结构碰撞特性进行了数值仿真研究，得到了具有一般性指导意义的分析结论。采用准静态方法，并结合球鼻首形状和撞击位置，推...
该项目是采用聚四氟乙烯和芳纶高分子合成材料，用国际先进工艺加工，专门为船舶船杆的密封装置设计的新型密封填料；该产品的应用，有效地提高船杆的密封性能、延长其寿命，彻底解决船杆的泄漏问题；经济效益可观，促进中国航海和环保事业的发展。
该产品是由多种表面活性剂、高级醇、无机酸及其盐、促进剂、高级缓蚀钝化剂、结合剂等物质组成，于室温下同时完成除油、除锈、磷化三道工序，具有省时、省力、省物和节能等特点。技术指标：工作液外观：淡绿色透明液体；pH：1-2；游离酸度(点)：100；总酸度(点)：300；处理温度：室温；处理时间：视工作油、污、锈等情况而定(8-10分钟)；处理方式：浸泡；磷化膜外观：银灰色；硫酸铜点滴：＞60秒。工艺流程...