The dynamic response of freestanding carbon fiber reinforced composite sandwich plates with square honeycomb cores of different relative densities subjected to water blast is investigated by numerical simulations. The constitutive models are validated by quasi-static compression response comparisons of numerical simulations and theoretical calculations. The deformation process, core compression and momentum transmitting characteristics are analyzed and the regulations of the core compression and momentum transmitting for sandwich plates with different core relative densities are revealed. Dynamic response and protection property of composite sandwich plates and mass-equal laminate plates are compared, which indicates that the composite sandwich plates can provide superior protection from water blast than laminate plates.

通过数值模拟研究了不同相对密度的方形蜂窝芯独立式碳纤维增强复合材料夹芯板的动力响应。通过数值模拟和理论计算的准静态压缩响应比较来验证本构模型。分析了变形过程，岩心压缩和动量传递特性，揭示了不同岩心相对密度夹心板的岩心压缩和动量传递规律。比较了复合夹芯板和质量相等的叠层板的动力响应和防护性能，表明复合夹层板比叠层板可提供更好的防水保护。