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Numerical Research on Wave-making Resistance of Trimaran

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Journal of Shanghai Jiaotong university(Science) 2008年第3期13卷 348-351页

作者：王虎邹早建 School of naval Architecture Ocean & Civil Engineering Shanghai Jiaotong University

A 3D rankine panel method was developed for calculating the linear wave-making resistance of a tri-maran with Wigley hulls. In order to calculate the normal vector and derivative of the body surface accurately, non-uniform rational B-spline (NURBS) was adopted to represent body surface and rankine source density. The radiation condition is satisfied using the numerical technology of staggered grids. Numerical results show that the linear wave-making resistance of the trimaran can be calculated effectively using this method.

关键词：三体游艇波致阻力船舶动力学数值研究

Effects of pitting corrosion on fatigue life of aluminum alloy Y12CZ based on initial discontinuity state

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中国有色金属学会会刊：英文版 2006年第A3期16卷 1319-1322页

作者：郁大照陈跃良胡家林杨茂胜 naval Aeronautical Engineering Academy Yantai 264001China Qingdao Branch Naval Aeronautical Engineering AcademyQingdao 266041China

Based on initial discontinuity state (IDS) of material, a preliminary analytical model was presented to evaluate the effect of interaction of pitting corrosion and fatigue loading on the residual fatigue life of aluminum alloy LY12CZ. A life prediction was carried out using constant and variable amplitude loading for various pitting corrosion levels, and the prediction agreed reasonably with the available test data. The results suggest that the combination of a pit and IDS can be treated as the initial crack size. Pitting corrosion causes a significant decrease in fatigue lives with small corrosion depths. But the effect of pit on fatigue life is gradually reduced with increasing pit size. A pit with a constant depth can be applied to the model for long exposure structure. A preliminary recommendation for the pit depth is about 1 mm for LY12CZ. At last the effect of multiple-site corrosion damage (MSCD) on fatigue life was also studied, and the result shows that MSCD can decrease substantially fatigue life compared with that of a single crack.

关键词：铝合金疲劳分析金属腐蚀强度

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三体船升沉和纵倾计算及其对兴波阻力的影响

上海交通大学学报 2010年第10期44卷 1388-1392页

作者：王中卢晓平付攀海军工程大学船舶与动力学院武汉430033 海军驻青岛造船厂军事代表室青岛266000

基于三维Rankine源方法迭代计算三体船静水航行时的兴波阻力、升沉和纵倾.计算过程中采用NURBS曲面表达船体,根据迭代计算得到的升沉和纵倾确定船体平均浸湿表面,并用铺砌法对其进行全四边形网格划分,计算三体船及其中体的兴波阻力、升... 详细信息

基于三维Rankine源方法迭代计算三体船静水航行时的兴波阻力、升沉和纵倾.计算过程中采用NURBS曲面表达船体,根据迭代计算得到的升沉和纵倾确定船体平均浸湿表面,并用铺砌法对其进行全四边形网格划分,计算三体船及其中体的兴波阻力、升沉和纵倾.计算结果与试验结果比较表明,所提方法能够较准确地预报三体船静水航行升沉和纵倾,且考虑升沉和纵倾后,三体船兴波阻力数值计算精度有明显改进.

关键词：三体船升沉纵倾兴波阻力面元法

SEEPAGE ANALYSIS OF LANDFILL FOUNDATIONS IN SHANGHAI LAOGANG LANDFILL PHASE IV

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Journal of Hydrodynamics 2006年第5期18卷 613-619页

作者： ZHANG Qian-fei WANG Yan-ming XU Yong-fu School of naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030 China Shanghai Municipal Engineering Design Institute Shanghai 200092 China

A complex seepage flow field with unknown free surface was formed in the Shanghai Laogang Municipal Solid Waste （MSW） Landfill by the perimeter cut-off wall around the landfill site and the Prefabricated Vertical Drains （PVD） in the foundation of landfill. First, the equivalent vertical permeability was presented based on the drainage mechanism of PVD and the related calculation method was studied to macroscopically reflect the impact of PVD on the seepage flow status of the landfill foundation. With the influence of the cut-off wall and the PVD on the infiltration of groundwater, the total inflow was classified into two parts： the lateral inflow through the cut-off wall outside the landfill, and the upward infiltration through the PVD from the foundation of the landfill. Seepage analysis was conducted using the finite element method according to the actual scenario of Laogang Landfill, and the lateral infiltration and the upward infiltration were calculated, respectively. The results show that the total inflow into the landfill area was mostly supplied by the upward infiltration through the PVD and the perimeter cut-off wall was significantly effective to depressurize the seepage pressure and to reduce the flow rate.

关键词： Municipal Solid Waste (MSW) landfill foundations of landfill cut-off wall Prefabricated Vertical Drain (PVD) lateral infiltration upward infiltration finite element analysis

Determination of Partial Safety Coefficients of Structural Reliability Based on Contaminated Distribution

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Journal of Shanghai Jiaotong university(Science) 2010年第3期15卷 285-290页

作者：周冲寇新建 School of naval Architecture Ocean and Civil EngineeringShanghai Jiaotong University

Partial safety factors must be evaluated precisely for the given target reliability index to ensure the certain level of structural reliability due to uncertain *** current studies of partial safety factors do not consider human error in construction for structural reliability.A mathematically model should be improved to simulate the partial safety coefficient concerned uncertainty factors which concern the effect of human error in *** employ the contaminated distribution to obtain the realistic mean value and standard variance of variable of structural parameters which coexist with random error human *** reasonable partial safety coefficient can be calculated based on the realistic value of structural parameters concerned the effects of random error and gross error.

关键词： structural reliability partial safety factors human error contaminated distribution model

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桩柱与液体耦联振动问题的研究

天津大学学报 1986年第4期 36-44页

作者：李长升天津大学海洋与船舶工程系

为了揭示桩柱与液体耦联振动问题的规律,本文研究了水中桩柱在简谐激振力作用下的动水压力。通过理论分析与实验研究提出了动水压力的理论解与数值计算方法,并探讨了不同参数对动水压力的影响。

关键词：耦联振动动水压力桩柱数值迭代

What＇s　the　Common　Ground　of　Al　Numerical　and　Analytical　Techniques　for　Nonlinear　Problems？

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Communications in Nonlinear Science and Numerical Simulation 1996年第4期1卷 28-32页

作者： Shi-Jun LIAO (Dept. of naval Arch. & Ocean Engineering, Shanghai Jiao Tong Univ.,Shanghai 200030, P. R. China) E-mail: SJLIAO@hkucc.hku.hk Dept. of naval Arch. & Ocean Engineering Shanghai Jiao Tong Univ.Shanghai 200030 P.R. China

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关键词： common ground of nonlinear techniques iterative techniques perturbation techniques Homotopy Analysis Method

Method of Estimating Human Error Probabilities in Construction for Structural Reliability Analysis Based on Analytic Hierarchy Process and Failure Likelihood Index Method

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Journal of Shanghai Jiaotong university(Science) 2010年第3期15卷 291-296页

作者：周冲寇新建 School of naval Architecture Ocean and Civil EngineeringShanghai Jiaotong University

Human error(HE) is the most important factor influencing on structural safety because its effect often exceeds the random *** numbers of facts have shown that structural failures may be caused by the gross error due to *** it is essential to analyze HE in *** crucial work of human error analysis(HEA) is the estimation of human error probability(HEP) in *** method for estimating HEP,analytic hierarchy process and failure likelihood index method(AHP-FLIM),is introduced in this *** method also uses the process of expert judgment within the failure likelihood index method(FLIM).A numerical example shows the effectiveness of the methods proposed.

关键词： analytic hierarchy process(AHP) failure likelihood index method(FLIM) human error(HE) structural reliability

A Brief Information on the Recent Development of Diving Medicine in China

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China Ocean Engineering 1987年第4期 117-119页

作者： Gong Jinhan (The naval Medical Research Institute of PLA, Shanghai)

Diving medicine is a comparatively new branch of learning in China. Before the founding of thePeople’s Republic, there was no diving medical support at all, and diving medicine as a specialityremained a blank until in the early 1950s when the naval Diving Units came into existence and divingmedical officers were officially assigned to those units. 1950s saw the establishment of the naval Medical Research Institute, which was organized into

关键词： In A Brief Information on the Recent Development of Diving Medicine in China