A study on the grounding performance of VLCC considering the influence of material dynamic nonlinearity

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (4) : 73-80.

WANG Zili,FU Jie,WANG Zhe,LIANG Enqiang,LIU Kun

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Abstract

Reasonable and reliable material inputs are essential to obtaining the accurate simulation results for some impact problems such as ship grounding. In this paper,quasi-static and high speed tensile tests have been conducted to obtain the static and dynamic mechanical properties of typical marine mild steel. Considering the plastic strain hardening,fracture strain and strain rate sensitivity,material nonlinearities for simulation inputs have been acquired through related benchmark studies. On this basis,the simulation of VLCC grounding accident has been carried out using the finite element software ABAQUS. The grounding performance of hull structures has been analyzed through damage deformation,grounding force,and energy absorption. The results provide reference and bases for the material nonlinearity inputs in numerical simulation of ship collision and grounding.

Key words

ship grounding / material nonlinearity / grounding performance / tensile test / benchmark study

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WANG Zili,FU Jie,WANG Zhe,LIANG Enqiang,LIU Kun. A study on the grounding performance of VLCC considering the influence of material dynamic nonlinearity[J]. Journal of Vibration and Shock, 2017, 36(4): 73-80

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