Jiangsu Key Laboratory of Green Ship Technology

Wuxi, China

Jiangsu Key Laboratory of Green Ship Technology

Wuxi, China

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Liu Y.,Jiangsu Key Laboratory of Green Ship Technology | Liu Y.,China Ship Scientific Research Center | Chen L.,Shanghai JiaoTong University
Journal of Vibroengineering | Year: 2016

The effect of weld residual stress on the free vibrational characteristics of cylindrical shell is investigated. Motion equations of cylindrical shell with weld residual stress are established based on Flügge theory, the interaction between weld residual stress and displacements is investigated. The analytical method is applied to calculate the vibrational mode. Weld residual stress can induce the variation of free vibrational characteristics. The amplitude mainly effects the variation magnitude of natural frequency and mode shape, and the distribution dose on the variation trend. © JVE INTERNATIONAL LTD.


Huang H.,China Ship Scientific Research Center | Huang H.,Jiangsu Key Laboratory of Green Ship Technology | Xu H.,China Ship Development And Design Center | Wang J.,China Ship Scientific Research Center | And 4 more authors.
Ship Building of China | Year: 2015

Unsteady cavity often exists on the surface of V-bracket of high-speed multi-propulsor ship, which will cause V-bracket cavitation erosion on and affect the cavitations and hydrodynamic performance of propeller. This paper presented the test method and results of V-brackets cavitations performance optimization with a whole ship model and propeller models in the large cavitations channel. The test results indicated that the V-bracket with appropriate attack angle would observably improve the cavitations performance of V-bracket and propellers. ©, 2015, Editorial Office of Shipbuilding of China. All right reserved.


He T.,CAS Beijing Institute of Acoustics | He T.,Jiangsu Key Laboratory of Green Ship Technology | Sun G.,China Ship Scientific Research Center | Sun Y.-D.,CAS Beijing Institute of Acoustics | And 3 more authors.
Chuan Bo Li Xue/Journal of Ship Mechanics | Year: 2014

Plate-silencer possesses low frequency and broadband noise attenuation characteristics, which is potentially better than conventional holmholtz resonators and porous sound absorbing materials. In this paper, material and geometric coefficients of plate and cavity are analyzed. The study shows that the less cavity restraining on plate is, the more effective silencers is and the lower plate first resonate frequency is, the lower noise attenuation frequency is. Therefore, low spring-mass-ratio plate with large area is preferred; more compact geometric silencer can be realized with air cavity other than water cavity for retaining low frequency and broadband noise attenuation characteristics. Influence of pressured air cavity on TL is analyzed and the results indicate that plate silencers retain low frequency broadband noise attenuation characteristics under higher pressure conditions, and the noise attenuation broadband expanded and shift to low frequency.


Chen J.,China Ship Scientific Research Center | Chen J.,Jiangsu Key Laboratory of Green Ship Technology | Wang S.,China Ship Scientific Research Center | Wang S.,Jiangsu Key Laboratory of Green Ship Technology | And 2 more authors.
Ship Building of China | Year: 2015

In this paper, the lines optimization of an 8000TEU container ship is carried out to reducing calm water resistance and parametric roll. The nonlinear panel method in time domain is adopted to analyze the parametric rolling for two variants of the 8000TEU container ship. Numerical results show that the maximum roll angle of variant A1 is significantly greater than that of variant A0, while the two variants have nearly the same calm water resistance. A new concept is established for the line optimization of container vessel. ©, 2015, Editorial Office of Ship Building of China. All right reserved.


Zhao N.,China Ship Scientific Research Center | Zhao N.,Jiangsu Key Laboratory of Green Ship Technology | Liu J.-J.,China Ship Scientific Research Center | Liu J.-J.,Jiangsu Key Laboratory of Green Ship Technology | And 2 more authors.
Chuan Bo Li Xue/Journal of Ship Mechanics | Year: 2015

Based on broadside collision mode, the angle of two ships while collision happening and impacted position of store ship in each stage is analyzed, and the damage behavior of a store ship broadside in collision is studied through numerical simulation by explicit non-linear finite element method. The time history of collision force, energy absorption and structural deformation during collision are described. The damage mode and the resistant effects of the side structure and movement of the both encountered ships are analyzed and discussed. Some general instructive conclusions on behavior of store ship broadside collision are obtained. The research work of this paper provides a guide for evaluation of side structural damage of store ship and optimization design of side structure. ©, 2015, China Ship Scientific Research Center. All right reserved.


Hu Q.,China Ship Scientific Research Center | Hu Q.,Jiangsu Key Laboratory of Green Ship Technology | Zong T.,China Ship Scientific Research Center | Xu J.,China Ship Scientific Research Center | And 2 more authors.
Ship Building of China | Year: 2016

Speed trial standard ISO15016:2015 is applied to ships for which the speed trials were conducted on or after 1st September, 2015. In this paper, main differences between ISO15016:2015 and ISO15016:2002 were presented, and comparison analysis of speed correction for two ships based on ISO15016:2015 and ISO15016:2002 respectively was carried out. On this basis, some problems in ISO15016:2015 were pointed out, and impact of the standard on shipbuilding industry was summarized. © 2016, Editorial Office of Ship Building of China. All right reserved.


Diao F.,China Ship Scientific Research Center | Diao F.,Jiangsu Key Laboratory of Green Ship Technology | Chen J.,China Ship Scientific Research Center | Chen J.,Jiangsu Key Laboratory of Green Ship Technology | And 4 more authors.
Ship Building of China | Year: 2016

In order to obtain ice resistance in preliminary design stage of polar ships, empirical models, including Lindqvist, Keinonen, Riska and Jeong models are used to estimate ice resistance of a polar ship, and the calculation results are compared with model test results. Meanwhile, the parameter study of the empirical theoretical models is conducted, which will guide the preliminary optimization of polar ship hull forms and lay foundation for the development of the numerical prediction method for ice resistance of polar ships. © 2016, Editorial Office of Ship Building of China. All right reserved.


Liu D.,China Ship Scientific Research Center | Liu D.,Jiangsu Key Laboratory of Green Ship Technology
Procedia Engineering | Year: 2015

According to the mass transport equations of vapor and liquid, and Rayleigh-Plesset equation, a cavitation model based on a single-fluid multi-phase flow method is proposed, which especially considers the nonlinear variety of the bubble radius and is expected to deal well with cloud cavitating flow.The proposed cavitaion model was validated against a benchmark database for 2D NACA66MOD hydrofoil and experimental photos of E779A propeller sheet cavitation shape. The overall results suggest that the present proposed cavitation model is practicable for simulating cavitating flows. © 2015 Published by Elsevier Ltd.


Wei P.,China Ship Scientific Research Center | Wei P.,Jiangsu Key Laboratory of Green Ship Technology | Yue Y.,China Ship Scientific Research Center | Yue Y.,Jiangsu Key Laboratory of Green Ship Technology | And 3 more authors.
Structural Health Monitoring and Integrity Management - Proceeding of the 2nd International Conference of Structural Health Monitoring and Integrity Management, ICSHMIM 2014 | Year: 2015

Fiber Bragg Grating (FBG) strain sensors with long-distance transmission, high measurement accuracy, distributed measurement, corrosion-resistant and antielectromagnetic interference, and so on suitable for long-term monitoring in harsh environments, become the main direction of development of marine engineering structural health monitoring. On the basis of the characteristics of the marine environment and FBG strain sensor installation process requirements, the FBG strain sensor long-term sealing protection technology was in detail research. FBG strain sensors long-term temperature compensation technique has been proposed, and sensor waterproof seal method is established. By four months of seawater immersion test, the practicality and feasibility of sensor long-term sealing protection method has been verified. The research results can provide technical guidance for marine engineering structural health monitoring. © 2015 Taylor & Francis Group, London.

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