A theoretical model for stiffeners on outer plating of ship side shell under the scenario of struck by a bulbous bow is proposed in this paper. It is based on a study of the progressive deformation process of structural deformation results and the plastic-elastic theory. This paper stresses the research on establishing the characteristic deformation mechanism and identifying the major energy dissipation pattern of the stiffeners attached on side shell plating. The analytical expressions of distortion energy of stiffeners and its resistance are derived. The analytical method is verified by numerical simulations using code LS_DYNA. The results of numerical simulations and those by the proposed analytical method match well. The proposed analytical method can be used for quick assessment of the performances of ship side structures during ship collision.
孙斌1，胡志强1，王晋1,2. 一种船舶舷侧外板骨材抗撞性能解析预报模型[J]. 振动与冲击, 2016, 35(10): 60-65.
Bin Sun1, Zhiqiang Hu1, Jin Wang1,2. AN ANALYTICAL PREDICTION METHOD FOR CRASHWORTHINESS OF SIDE SHELL STIFFENERS. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(10): 60-65.
[1] Lin Hong, Jørgen Amdahl, Ge Wang. A direct design procedure for FPSO side structures against large impact loads[J]. Journal of Offshore Mechanics and Arctic Engineering, 2009, 131:031105;
[2] Lin Hong, Simplified analysis and design of ships subjected to collision and grounding[D]. Ph.D. thesis, Norwegian University of Science and Technology, 2008：12-17.
[3] 于兆龙，胡志强，王革等. 船舶搁浅于台型礁石场景下双层底纵桁上纵骨变形机理研究[J]. 振动与冲击，2014，33(3)：162-169.
YU Zhao-long, HU Zhi-qiang, WANG Ge et al. Collapse mechanism of longitudinal web girder attached stiffeners in a shoal grounding scenario of double bottom tanker[J]. Journal of vibration and shock, 2014, 33(3): 162-169.
[4] 于兆龙，胡志强，刘毅等. 船舶搁浅于台型礁石场景下双层底肋板骨材变形机理研究[J]. 振动与冲击，2014，33（14）：188-194.
YU Zhao-long, HU Zhi-qiang, LIU Yi et al. Collapse mechanism analysis of stiffeners on transverse floors in a shoal grounding course of double bottom tanker[J]. Journal of vibration and shock, 2014, 33(14): 188-194.
[5] Yamada Y, Endo H, Experimental and numerical study on the collapse strength of the bulbous bow structures in oblique collision[J]. Marine Technology, 2008, 45(1):42–53.
[6] Zhaolong Yu, Zhiqiang Hu, Jørgen Amdahl et al, Investigation on structural performance predictions of double-bottom tankers during shoal grounding accidents[J]. Marine Structures, 2013, 33:188-213.
[7] Ge Wang, Structural Analysis of Ships’ Collision and Grounding[D]. Ph.D. thesis, University of Tokyo, 1995.
[8] Ge Wang, Kikuo Arita, Donald Liu, Behavior of a double hull in a variety of stranding or collision scenarios[J]. Marine Structures, 2000, 13: 147-187.
[9] Paik JK., Cutting of a longitudinally stiffened plate by a wedge[J]. J Ship Res, 1994, 38(4): 340-380.
[10] 刘 毅，王 晋，胡志强．船舶搁浅于台型礁石中的等效板厚法的研究［J］．工程力学，2013，30(8)：287-293.
LIU Yi, WANG Jin, HU Zhi-qiang. Investigation on smeared thickness method for ship grounding over obstacles with large contact surfaces and trapezoidal cross section[J]. Engineering Mechanics, 2013, 30(8): 287-293.
[11]Zhenguo Gao, Zhiqiang Hu, Ge Wang et al, An analytical method of predicting the response of FPSO side structures to head-oncollision[J]. Ocean Engineering, 2014, 87:121-135.
