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Steel and Composite Structures
  Volume 44, Number 2, July 2022 , pages 211-224
DOI: https://doi.org/10.12989/scs.2022.44.2.221
 


Multi-objective geometry optimization of composite sandwich shielding structure subjected to underwater shock waves
Hao Zhou, Rui Guo, Wei Jiang, Rongzhong Liu and Pu Song

 
Abstract
    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.
 
Key Words
    composite sandwich structures; multi-objective optimization; numerical simulation; surrogate model; underwater shock waves
 
Address
Hao Zhou:1)National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, 200 Xiaolingwei Street,
Nanjing 210094, P. R. China
2)School of Mechanical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, P. R. China

Rui Guo:School of Mechanical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, P. R. China

Wei Jiang:National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, 200 Xiaolingwei Street,
Nanjing 210094, P. R. China

Rongzhong Liu:School of Mechanical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Street, Nanjing 210094, P. R. China

Pu Song:Xi'an Modern Chemistry Research Institute, 168 Zhangbadong Road, Xi
 

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