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      저자 : Rongzhong Liu (검색결과 2 건)
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      • Multi-objective geometry optimization of composite sandwich shielding structure subjected to underwater shock waves

        Hao Zhou,Rui Guo,Wei Jiang,Rongzhong Liu,Pu Song 국제구조공학회 2022 Steel and Composite Structures, An International J Vol.44 No.2

        Multi-objective optimization was conducted to obtain the optimal configuration of a composite sandwich structure with honeycomb-foam hybrid core subjected to underwater shock waves, which can fulfill the demand for light weight and energy efficient design of structures against underwater blast. Effects of structural parameters on the dynamic response of the sandwich structures subjected to underwater shock waves were analyzed numerically, from which the correlations of different parameters to the dynamic response were determined. Multi-objective optimization of the structure subjected to underwater shock waves of which the initial pressure is 30 MPa was conducted based on surrogate modelling method and genetic algorithm. Moreover, optimization results of the sandwich structure subjected to underwater shock waves with different initial pressures were compared. The research can guide the optimal design of composite sandwich structures subjected to underwater shock waves.

      • KCI등재

        Energy absorption investigation of square CFRP honeycomb reinforced by PMI foam fillers under quasi-static compressive load

        Hao Zhou,Rui Guo,Kuo Bao,Haiyang Wei,Rongzhong Liu 국제구조공학회 2019 Steel and Composite Structures, An International J Vol.33 No.6

        A type of hybrid core made up of thin-walled square carbon fiber reinforced polymer (CFRP) honeycomb and Polymethacrylimide (PMI) foam fillers was proposed and prepared. Numerical model of the core under quasi static compression was established and validated by corresponding experimental results. The compressive properties of the core with different configurations were analyzed through numerical simulations. The effect of the geometrical parameters and foam fillers on the compressive response and energy absorption of the core were analyzed. The results show that the PMI foam fillers can significantly improve the compressive strength and energy absorption capacity of the square CFRP honeycomb. The geometrical parameters have marked effects on the compressive properties of the core. The research can give a reference for the application of PMI foam materials in energy absorbing structures and guide the design and optimization of lightweight and energy efficient cores of sandwiches.

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