2015 Vol. 10, No. 6

Contens of CJSR 2015,Vol.10,No.6
Chinese Journal of Ship Research
2015, 10(6): .
Abstract:
[1]Research and revision on the scale effect of the wake field based on the method of SDM…GUO Chunyu,ZHANG Qi,CHEN Ge,et al(1)[2]Hull lines optimization based on the evaluation of seakeeping performance…ZHANG Yao,WANG Kai,YANG Shuai,et al(8)[3]Method of reducing the roll amplitude of a deep-vee hull at zero speed…DONG Runpeng,DONG Wencai,YAO Chaobang(15)[4]Analysis of the feasibility of installing deep-sea detectors in large public vessels…CHEN Rui,HUANG Wugang(21)[5]Typical shape and topology optimization design of the ship grillage structure…ZHANG Huixin,YANG Deqing(27)[6]Analysis and experimetal verification of the catenary component with the finite element method…WANG Han,XIE De(34)[7]The low-cycle fatigue life model and the accumulative plastic strain model for stiffened plates under cyclic loading …WANG Dan,YANG Ping,DENG Junlin,et al(39)[8]Numerical analysis of the damage on I-core sandwich panels subjected to combined blast and fragment loading…DUAN Xinfeng,CHENG Yuansheng,ZHANG Pan,et al(45)[9]Numerical simulation of steel plates subjected to the impact of both impact waves and fragments…LI Mao,ZHU Xi,HOU Hailiang,et al(60)[10]Analysis on the vibration and sound radiation characteristics of double cylindrical shells using wave number spectrums …TAN Lu,JI Gang,ZHOU Qidou,et al(68)[11]The course and speed cooperative control method for unmanned surface vehicles…CAO Shijie,ZENG Fanming,CHEN Yutao(74)[12]Transmission characteristics of propeller excitation for naval marine propulsion shafting…YU Qiang,WANG Lei,LIU Wei(81)[13]Effects of blade skew on the hydrodynamic and deformation performance of propellers…ZHANG Rui,WANG Xianzhou,ZHANG Zhiguo,et al(87)[14]Classification method of nuclear events for marine nuclear power plants…Yang Guangsheng,Chen Bao,LIU Boxin,et al(95)[15]Structure design and optimization on the tooling of side-fixed equipment installation attitude control…GAO Yakun,ZHANG Sheng,LIU Yang,et al(101)[16]Numerical simulation of the air distribution in a typical ship cabin…QUAN Chongren,WANG Yang,YU Liqing,et al(107)[17]A mission-oriented simulating and optimizing method for the shipborne system information flow…YUE Lin,XIANG Guofu,HU Weihao(114)[18]Thermally sprayed metallic coatings and the corresponding potential applications for ships…ZHANG Misi,GAO Xinhua,NING Hui,et al(120)[19]General cargo ship loading problems based on the hybrid genetic algorithm…ZHU Ying,XIANG Xianbo,YANG Yuntao(126)[20]Chinese Journal of Ship Research vol.10 contents(2015)…(133)
基于SDM方法的船艉伴流场尺度效应研究与修正
GUO Chunyu, ZHANG Qi, CHEN Ge, WANG Lianzhou
2015, 10(6): 1-7. doi: 10.3969/j.issn.1673-3185.2015.06.001
Abstract:

以KCS为研究对象,利用CFD计算软件STAR-CCM+,计算不同尺度下KCS船伴流场的分布情况,分析尺度效应对船舶伴流场的影响。为修正由尺度效应引起的模型尺度与实尺度船模船艉标称伴流场的误差,借鉴智能假体模型(SDM)的概念,并通过软件Friendship中的Framework模块对原模型的艉部进行修改,讨论不同收缩程度的艉部变形对修正伴流场尺度效应的作用。结果表明:SDM方法对修正伴流场尺度效应的作用效果明显,且通过模型尺寸的收缩变形基本可以达到目标伴流场的伴流分布形式。

Hull lines optimization based on the evaluation of seakeeping performance
ZHANG Yao, WANG Kai, YANG Shuai, CHEN Chen, FEI Yuting, HOU Guoxiang
2015, 10(6): 8-14. doi: 10.3969/j.issn.1673-3185.2015.06.002
Abstract:
The seakeeping performance of ships is an important index of evaluating ship performance. With an increasing number of instruments and weapons systems being used in shipbuilding, the issue con-cerning how to keep these systems working is of vital importance to ship designers. However, as the ship's seakeeping performance is contradictory with its speed performance, a reasonable evaluation scheme of the seakeeping performance is essential. In this paper, five sets of data of the sea-keeping performance that re-ceive most attention-pitch amplitude, heave amplitude, acceleration in the bow, the amidships, and the stern-are obtained through model tests. The hull lines are then optimized to improve the sea-keeping per-formance with the added resistance being limited within a certain threshold. Meanwhile, in order to ensure the accuracy of the tests, the response of ship motion in irregular waves is compared with the experimental values, and results show that the five indicators for sea-keeping performance of modified ships are success-fully optimized to meet the design goals.
Method of reducing the roll amplitude of a deep-vee hull at zero speed
DONG Runpeng, DONG Wencai, YAO Chaobang
2015, 10(6): 15-20. doi: 10.3969/j.issn.1673-3185.2015.06.003
Abstract:
A series of resistance and roll decay model tests are conducted in order to solve the large roll amplitude problem of one kiloton deep-vee ship with zero speed under rough sea condition. The roll re-sponse in regular waves is first obtained by solving the nonlinear roll motion equation, and the roll ampli-tude of the full scale hull in seaway is then predicted in the ITTC wave spectrum. The influences of length, width, location, and continuity of blige keel on resistance, roll damping, and roll amplitude are studied, re-spectively. The results indicate that incorporating a kind of bilge keel can reduce the rolling amplitude at zero speed by 25% and control the drag addition within 4.5% from cruising speed to maximum speed. These tests provide technical support to reduce the roll amplitude of kiloton deep-vee hull under the moor-ing state in seaway.
大型公务船加装深海探测设备的可行性分析
CHEN Rui, HUANG Wugang
2015, 10(6): 21-26. doi: 10.3969/j.issn.1673-3185.2015.06.004
Abstract:

大型公务船如果具备一定的深海探测能力,可更好地执行任务。提出了通过加装深海探测设备使大型公务船获得深海探测能力的设计思想。分析总结深海探测任务的特点,明确了深海探测工作可划分为编制海图、测量海流、深海探测和可视确认4个流程,需要配备A型架、牵引绞车以及多种声学探测设备。并以某大型巡航救助船为例,结合船型特点和现有的布置条件,提出A型架和牵引绞车采用模块化安装方式,设置露天集中控制站,主要声学探测设备采用导流罩式的安装方式,超短基线采用自动收放系统,实现深海探测作业功能。最后分析了加装设备对重量重心、航速、稳性、浮态、人员居住、《船舶专用海水压载舱和散货船双舷侧处所保护涂层性能标准(PSPC)》顺应性和舷墙结构等总体性能的影响。研究表明:大型公务船加装深海探测设备合理可行,是快速获得深海探测能力的有效途径。

Typical shape and topology optimization design of the ship grillage structure
ZHANG Huixin, YANG Deqing
2015, 10(6): 27-33,59. doi: 10.3969/j.issn.1673-3185.2015.06.005
Abstract:
Taking the typical ship grillage structure as the study object, this paper mainly describes the ap-plication of optimized design of ship structures. Specifically, the size and shape optimization is applied onto the grillage structure at the bottom, with the weight of the structure being objective and the stress being the constraint condition. After optimization, the weight has decreased by 15.82%. As for deck grillage, to im-prove the spatial layout of the top of superstructure cabins, raise the natural frequency of grillage structure on top, and seek for the optimal distribution of materials, the topology optimization is applied with its static analysis and modal analysis being discussed. Based on the above obtained data, the volume fraction is set as the restriction condition of the model, and the structural natural frequency is set as the objective func-tion. Finally, new structure type which optimizes the spatial layout of the top of superstructure cabins are presented, which renders more reasonable material distribution, increases grillage structure's natural fre-quency, and meets expected goals. Research shows that, at present, the grillage structure design can be widely used in the topology and shape optimization design technology.
悬链线构件的有限元方法
WANG Han, XIE De
2015, 10(6): 34-38. doi: 10.3969/j.issn.1673-3185.2015.06.006
Abstract:

悬链线构件在船舶与海洋工程中是广泛存在的一种结构,无论是船舶码头旁靠、锚泊定位中的系泊线,还是各种系泊结构物中各种深海悬链线结构(如深海柔性立管、深海锚泊系统、复合材料悬链线立管等)的系泊力响应,对整个结构物都显得非常重要。其中,由于悬链线构件具有很强的几何非线性,其受力分析的精度对其运动响应的分析尤为重要。根据悬链线构件静力分析,得到悬链线单元的柔度矩阵,从而进一步推导出悬链线单元的刚度矩阵和单元节点力向量,最后以商业有限元软件ABAQUS的用户自定义单元(UEL)为工具,开发出悬链线单元。结果显示:运用此单元得到的简单悬链线结构的数值解与解析解完全一致,同时也基本符合实验结果,为解决各种复杂悬链线构件问题的直接计算法提供了一种新的思路。

The low-cycle fatigue life model and the accumulative plastic strain model for stiffened plates under cyclic loading
WANG Dan, YANG Ping, DENG Junlin, DONG Qin
2015, 10(6): 39-44. doi: 10.3969/j.issn.1673-3185.2015.06.007
Abstract:
In order to analyze the increasing accumulative plastic damage of ship stiffened plates, this pa-per combines the interaction coefficients of stiffeners and plates, and with plastic strain of damage evolu-tion being the control parameter, the low-cycle fatigue accumulative increasing plastic damage model and low-cycle fatigue life model for stiffened plates have been derived based on the theory of damage mechan-ics. The fatigue damage variable of the stiffened plate under cyclic loading is then introduced into the accu-mulative plastic strain equation. Next, by means of integral transformation, the evolution equation of axial accumulative plastic strain and the constitutive model for low-cycle fatigue life are deduced under low cy-clic loading. The general high strength steel 402 is adopted, with its related material fatigue characteristic parameters introduced to be compared with the low-cycle fatigue life model of stiffened plates. The theoreti-cal evolution results from the presented models of the accumulative plastic strain damage are compared with finite element modeling results, and the influences of mean stress and rib stiffness ratio on the accumu-lated plastic strain are discussed. The results indicate that the established model well reflects the evolution-al law of the axial plastic strain of the stiffened plate under cyclic loading and brings convenience into the evaluation of low-cycle fatigue strength of ship structures.
Numerical analysis of the damage on I-core sandwich panels subjected to combined blast and fragment loading
DUAN Xinfeng, CHENG Yuansheng, ZHANG Pan, LIU Jun, LI Yong
2015, 10(6): 45-59. doi: 10.3969/j.issn.1673-3185.2015.06.008
Abstract:
In this paper, the combined blast and fragment loads due to close-in warhead explosion is simu-lated by placing prefabricated fragments at the bottom of bare TNT explosive, and the corresponding dam-age on I-core sandwich panels are evaluated using the software LS-DYNA. The differences of failure modes of sandwich panels subjected to only blast and combined blast and fragment loads are analyzed, and the effects of core configuration and thickness configuration between the front and back plates on the fail-ure modes are studied. The anti-damage performance of sandwich panels is then compared with that of the equivalent solid plate. In addition, the energy absorption characteristics of I-core sandwich panels under different loads are also analyzed. Numerical results show that the overall damage of both the sandwich pan-els and solid plates subjected to combined blast and fragment loads is more severe than that caused by blast only. The performance of I-core sandwich panels is superior to equivalent solid plates when the load-ing intensity is small. It is also found out that the loading intensity, loading type (blast loading or combined blast and fragment loading) and the thickness configuration between the front and back plates yield signifi-cant influences on the failure modes of the I-core sandwich panel. From the results of energy analysis, it can be concluded that the front face plate and the core are the main energy-absorbing parts under blast loading, while the front and back face plates become the main energy-absorbing parts when combined blast and fragment loading is considered.
Numerical simulation of steel plates subjected to the impact of both impact waves and fragments
LI Mao, ZHU Xi, HOU Hailiang, CHEN Changhai, LI Dian, HU Nianming
2015, 10(6): 60-67. doi: 10.3969/j.issn.1673-3185.2015.06.009
Abstract:
The main objective of this study is to explore the deformation feature and damage pattern of a steel plate under the synergetic effects of blast and fragments loading. The combined blast and fragments loading effects under the condition of cast TNT and prefabricated fragments acting on a steel plate, are sim-ulated using the finite element program ANSYS/LS -DYNA. The flight of fragments driven by the charge is predicted, and the blast loading and fragments loading are analyzed respectively, while the deformation and damage characteristic under the combined loading are compared with experiment results. The simulation re-sults agree relatively well with the experimental results. Meanwhile, it is seen that the fragment at the cen-ter of the charge bottom has the highest velocity and the lowest velocity occurs at the edge. Under the exper-imental condition, blast reaches the structure first and fragments impact subsequently, and the total kinetic energy of fragments is much larger than that of blast wave and explosion products transmitted to the struc-ture. The punched hole appearing in the central region of the steel plate is mainly caused by the dense frag-ment cluster, which should be treated as the main target load for protective structures.
Analysis on the vibration and sound radiation characteristics of double cylindrical shells using wave number spectrums
TAN Lu, JI Gang, ZHOU Qidou, ZHANG Weikang
2015, 10(6): 68-73. doi: 10.3969/j.issn.1673-3185.2015.06.010
Abstract:
In order to explain the universal rules between the vibrational model and the sound radiation of double cylindrical shells, the coupling vibration responses of the structure are obtained with Finite Element Method combined with Boundary Element Method (FEM/ BEM). Then, the radial vibration on the cylindri-cal coupling surface is transformed into the wave number domain with the wave number analysis spectrum method, which generates the vibration and radiation power spectrums. Next, the vibration and sound radia-tion characteristics are obtained by comparing the vibration power and radiation power associated with each component of regular waves. It is seen that the vibration of outer shell consists of many components in cir-cumference and is dominated by short waves in the axial direction. Meanwhile, the sound radiation is domi-nated by low order vibration components in circumference and long waves in the axial direction.
The course and speed cooperative control method for unmanned surface vehicles
CAO Shijie, ZENG Fanming, CHEN Yutao
2015, 10(6): 74-80. doi: 10.3969/j.issn.1673-3185.2015.06.011
Abstract:
In order to solve the problem of autonomous dynamic control for unmanned surface vehicles (USV) under unknown conditions, a course and speed cooperative control method based on the adaptive fuzzy algorithm is studied in this paper. The fuzzy control algorithm is designed as to the inputs are the devi-ation of course and position, and the outputs are the rudder angle and throttle. The self-adaptive control method is applied, of which the input is the deviation rate of course and the output is the control cycle, to make the system effectively response to external changes. The objective function of the optimization is the weighted minimum of the arrival time and the changing frequency of rudder. The specific effects of the pa-rameters, like domains and the control cycle, are analyzed. The results of optimization analysis show that the method enables the USV to successfully reach the target point in random disturbance conditions with different wind, current and wave, and to achieve the point to point autonomous voyage.
舰船推进轴系的螺旋桨激励力传递特性
YU Qiang, WANG Lei, LIU Wei
2015, 10(6): 81-86,94. doi: 10.3969/j.issn.1673-3185.2015.06.012
Abstract:

螺旋桨激励力会通过轴系向各轴承基座传递,并激发船体结构产生振动声辐射问题。为掌握螺旋桨不同方向激励力通过轴系的传递规律,利用船舶推进轴系试验台,在轴系固有特性计算与测试的基础上,测试分析螺旋桨水平、垂向与纵向激励力通过轴系向3个轴承基座的传递特性。结果表明:单方向激励力作用下,轴系会产生不同方向的耦合振动,并在基座处产生3个方向的振动,其中轴系振动固有频率有明显体现;不同方向的激励力传递路径不同,水平激励在艉轴后轴承基座处产生较大水平振动,垂向激励在艉轴后轴承和推力轴承基座处产生较大垂向振动,纵向激励在推力轴承基座处产生较大纵向振动,螺旋桨激励力通过轴系向艉轴前轴承基座的传递相对较弱;与垂向激励相比,水平激励会在3个轴承基座处产生更大的振动响应。

Effects of blade skew on the hydrodynamic and deformation performance of propellers
ZHANG Rui, WANG Xianzhou, ZHANG Zhiguo, JIANG Weijian, TAO Zhu
2015, 10(6): 87-94. doi: 10.3969/j.issn.1673-3185.2015.06.013
Abstract:
During the operation of submarine propellers, the fluid mechanical pressure load on the blades could result in a structural load on the component, which in turn causes deformation of the blade. In this pa-per, the structural response is analyzed with the finite element method, and the coupling simulation is ac-complished by using ACT_Transient FSI in ANSYS Workbench. The geometries of the propeller DTMB 4381~4383 are then taken as the research objects, where the deformation characteristic and hydrodynamic performance of these propellers are studied. The results show that the max blade displacement worsens with the increase of skew angles, and the vibration of the blade decreases simultaneously.
Classification method of nuclear events for marine nuclear power plants
YANG Guangsheng, CHEN Bao, LIU Boxin, SHI Hao, CAI Qi
2015, 10(6): 95-100. doi: 10.3969/j.issn.1673-3185.2015.06.014
Abstract:
Due to the lack of time and limited communicative capacity during operation, the nuclear pow-ered ship requires more concise and accurate event reporting capability than common nuclear power plants, which ensures the actual conditions of the marine nuclear power plant can reach multiple parties quickly. This paper focuses on the events reporting problem of marine nuclear power plants: by combining with the mature experience of the international nuclear and radiological event scale(INES), a unified system of rules is established, and the classification standards helping different parties to realize the severity of nucle-ar events are formed. The research work is of great significance to the safety assurance of marine nuclear power plants.
侧挂设备安装姿态控制工装的结构设计与优化
GAO Yakun, ZHANG Sheng, LIU Yang, PAN Guoxiong
2015, 10(6): 101-106,113. doi: 10.3969/j.issn.1673-3185.2015.06.015
Abstract:

针对实船侧挂辅机设备的姿态控制问题,开展侧挂辅机设备安装姿态控制工装的结构设计,制定工装操控性、结构稳定性和调整精度的综合设计目标,利用标准件线性导轨和操控螺纹单元实现控制工装的核心功能,完成工装的稳定结构、设备安装结构、操控装置等组件与装配设计。利用仿真分析方法对工装结构进行优化,分析复杂结构在静力加载作用下抵抗变形的能力、可移动结构在运动过程中的结构稳定性、工装的强度和刚度特性,优化控制工装的组件尺寸和配合形式。依据工装的最优结构尺寸,制造工装样机并进行验证试验。结果表明:控制工装侧挂设备姿态调整的精度可以达到设计目标的要求,工装结构功能可行,操作简单,可实现设备安装姿态调整工作简化。

舰船典型舱室气流组织数值模拟
QUAN Chongren, WANG Yang, YU Liqing, CHEN Qian, XIE Junlong
2015, 10(6): 107-113. doi: 10.3969/j.issn.1673-3185.2015.06.016
Abstract:

针对舰船舱室空调系统的末端形式不同于民用建筑空调系统末端形式的特点,提出对采用布风器方式的舰船舱室的气流组织形式进行研究。采用计算流体动力学(CFD)技术,建立实船典型两人舱室的数值试验模型,根据舰船的实际边界条件对该舱室夏季设计工况和冬季设计工况下的气流组织进行数值模拟计算,并对典型截面的速度场及温度场进行分析。模拟结果表明:在夏季设计工况下,虽然布风器周围风速较高、温度较低,但舱内人员活动区域速度场分布较均匀,舱内风速小于0.3 m/s,温度场分布也较为均匀,温度约为26~27 ℃;在冬季设计工况下,除布风器周围风速较高、温度较高外,舱室大部分区域风速较低,小于0.2 m/s,温度约为20 ℃。无论是夏季还是冬季设计工况,采用布风器末端形式的典型两人舱室人员活动区域内的气流速度及温度均满足舒适性标准要求,结果验证了该典型舱室空调系统布置的合理性。

面向任务的舰船系统信息流程仿真优化方法
YUE Lin, XIANG Guofu, HU Weihao
2015, 10(6): 114-119,125. doi: 10.3969/j.issn.1673-3185.2015.06.017
Abstract:

针对目前舰船信息系统设计仍以功能集成实现为主,难以提升全舰总体信息交互与信息处理效率的问题,提出一种面向任务的舰船系统信息流程仿真优化方法。该方法进行全舰任务分解与舰员战位关联,然后采用DoDAF的体系结构视图技术建立面向战位任务的舰船系统信息流模型。实验表明,该方法既可检验信息流程的准确性和合理性,也可评估信息交互模型的关键节点和执行效率,可为舰船信息化总体方案验证优化提供一种有效的定量分析技术途径。

Thermally sprayed metallic coatings and the corresponding potential applications for ships
ZHANG Misi, GAO Xinhua, NING Hui, WANG Kuisheng
2015, 10(6): 120-125. doi: 10.3969/j.issn.1673-3185.2015.06.018
Abstract:
Due to the peculiar serving condition of the ships, the onboard equipment is often out of order, resulting in reduced life cycle;meanwhile, the maintenance cost rises correspondingly. In this paper, the advantages and disadvantages of arc spraying, super-sonic flame spraying, and plasma spraying for metal-lic thermally sprayed coatings are summarized. It is found that supersonic flame spraying best fits for large area metallic coatings for new ships. Certain factors that affect the corrosion resistance, adhesion, and poros-ity of the coatings are discussed, with the applications of metallic coatings on the ship being introduced. Fi-nally, in accordance with the requirements of metallic coatings, it is suggested that the integrated technolo-gy of supersonic flame spraying for large area spraying on the new ship should be studied, and the specific working procedure is described. Also, in order to meet the demands of the applications of large area metal-lic coatings for new ships, it is important to use post-treatment technologies with sealing agent to reduce the porosity of metallic coating, thus increasing the adaptation of metallic coatings to corrosive environ-ments.
General cargo ship loading problems based on the hybrid genetic algorithm
ZHU Ying, XIANG Xianbo, YANG Yuntao
2015, 10(6): 126-132. doi: 10.3969/j.issn.1673-3185.2015.06.019
Abstract:
General cargo ship loading problems belong to general three-dimensional container loading problems. In this paper, based on the analysis of general cargo ship loading problems and taking the goal of maximizing the space utilization, a mathematical model of general cargo ship loading problems is estab-lished. By analyzing the characteristics of the model, a hybrid genetic algorithm combined with the heuris-tic algorithm and the genetic algorithm is presented, and a new type of three-space partition method is de-signed, both of which being realized along with simulation and experimental confirmation. By examining a classic set of test data of Loh & Nee as an example, the space utilization is seen to reach 92.94%, which demonstrates distinct advantages to similar algorithms for the container loading problems. The experimental results show that the hybrid genetic algorithm is feasible on solving general cargo ship loading problems.
Chinese Journal of Ship Research Vol.10 Contents(2015)
Editorial Office of Chinese Journal of Ship Research
2015, 10(6): 133-136.
Abstract:
Chinese Journal of Ship Research Vol.10 Contents(2015)