前置陶瓷液舱复合结构抗爆炸成型弹丸侵彻机理研究

The background of this investigation is how to defend warship underwater structure against the attack of new type explosively formed projectile (EFP) warhead. Liquid tank of multilayer defensive structure with a front-mounted ceramic layer was suggested to resist the penetration of EFP, based on the penentation mechanism of ceramic. Investigation plan on penetration resistant mechanism of liquid tank with front-mounted ceramic subjected to the impact of EFP was carried out. Attention was focued on their failure modes, load transfer laws and energy dissipation mechanism. Theoretical analysis, Model tests and numerical analysis were planed and technologies such as high-speed photography and fluid-structure coupling analysis would be used, to clarify the failure modes of the projectile and their penetration mechanism, penetration characteristics of liquid filled tank by the residual projectile, load transfer laws and energy dissipation mechanism of the liquid, matching mechanism of the ceramic and liquid tank in penetration resistant, failure modes of the composite structure make up of ceramic and liquid filled tank and their influence on load transfer and energy dissipation. Aims of these studies are to establish dynamic analytical model and energy absorbing model of EFP penetrating ceramic, analytical model of load transfer laws and energy dissipation in liquid, analytical model of the ceramic and liquid tank in penetration resistant matching method, energy analytical model of ceramic and liquid tank composite structure when they are failure. By these studies to explore the failure modes and defending means of warship underwater structures, and to providing reference for designing and performance assessment of warship protective structure, providing reference for penetration analysis of other liquid filled structure.

以新型爆炸成型弹丸(EFP)战斗部作用下舰艇水下结构防护问题为背景，根据陶瓷材料的抗弹机理，提出在防雷舱的防护液舱前增设抗弹陶瓷材料层抵御EFP的侵彻。以失效模式、载荷传递规律与耗能机制为中心，拟通过理论分析、模型试验和数值模拟，利用高速摄影和流固耦合分析技术等手段，研究前置陶瓷液舱复合结构抗EFP侵彻机理，阐明弹体的变形失效及其形成机制、残余弹体在液舱中的侵彻特性及液体中载荷传递规律与能量耗散机制、陶瓷与液舱复合结构的抗侵彻匹配机制、变形失效模式与形成机制及其对载荷传递与能量耗散的影响规律，建立EFP侵彻陶瓷材料的动力学分析模型及耗能分析模型、液体中载荷传递及能量耗散的分析模型、陶瓷与液舱复合结构抗侵彻匹配动力学分析模型、液舱结构破损失效的能量分析模型，探索EFP战斗部作用下舰艇水下结构的破坏机理与防护方法，为舰艇水下防护结构的设计和效能评估提供依据，为其它注液结构的抗侵彻研究提供参考。

以新型爆炸成型弹丸(EFP)战斗部作用下舰艇水下结构防护问题为背景，根据陶瓷材料的抗弹机理，提出在防雷舱的防护液舱前增设抗弹陶瓷材料层抵御EFP 的侵彻。以失效模式、载荷传递规律与耗能机制为中心，拟通过理论分析、模型试验和数值模拟，利用高速摄影和流固耦合分析技术等手段，研究前置陶瓷液舱复合结构抗EFP侵彻机理，阐明弹体的变形失效及其形成机制、残余弹体在液舱中的侵彻特性及液体中载荷传递规律与能量耗散机制、陶瓷与液舱复合结构的抗侵彻匹配机制、变形失效模式与形成机制及其对载荷传递与能量耗散的影响规律，建立EFP 侵彻陶瓷材料的动力学分析模型及耗能分析模型、液体中载荷传递及能量耗散的分析模型、陶瓷与液舱复合结构抗侵彻匹配动力学分析模型、液舱结构破损失效的能量分析模型，探索EFP 战斗部作用下舰艇水下结构的破坏机理与防护方法，为舰艇水下防护结构的设计和效能评估提供依据，为其它注液结构的抗侵彻研究提供参考。