The purpose of the present study is to investigate dynamic ultimate strength of global hull girder of container ships using large-scale nonlinear finite element analysis (FEA). A series of time domain nonlinear finite element (FE)-simulation is carried out using large-scale FE models of a 8000 twenty-foot equivalent unit (TEU) container ship where a hogging moment is applied to the midship section. Five types of finite element models (three full models, a half hold model, a one transverse model) are used. These models adopt elastoplastic material model, which includes strain rate effect. The hogging moment, which is modeled by sinusoidal impulse, is applied to these models, and collapse mechanism as well as dynamic hull girder ultimate strength is investigated by varying the load time duration. Moreover, effects of load time duration, mass inertia, strain rate, and analysis models are investigated in detail. It is found from the present study that ultimate strength as well as collapse mode is significantly dependent on load time duration of hogging moment.
Dynamic Collapse Mechanism of Global Hull Girder of Container Ships Subjected to Hogging Moment
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received July 25, 2018; final manuscript received December 6, 2018; published online February 18, 2019. Assoc. Editor: Nianzhong Chen.
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Yamada, Y. (February 18, 2019). "Dynamic Collapse Mechanism of Global Hull Girder of Container Ships Subjected to Hogging Moment." ASME. J. Offshore Mech. Arct. Eng. October 2019; 141(5): 051605. https://doi.org/10.1115/1.4042267
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