钢板-蜂窝夹层结构吸能与破坏机理研究

Most of existing protection engineering protective doors adopt a double-layer plate structure. With the development of weapons and equipment, in accordance with the existing conventional weapons design specification, the structure resistance of protective door has been increasingly unable to meet the need of the blast resistant. It is found through the previous work that polyurethane material, aluminum honeycomb material and the honeycomb paperboard are three kinds of materials which have good energy absorption effect and the relatively light quality. Therefore, the honeycomb paperboard, honeycomb aluminum, polyurethane honeycomb paperboard (abbreviated as PHP) and polyurethane aluminum honeycomb panel (abbreviated as PHA) are proposed to be the intermediate of sandwich plate structure. Through impact tests and explosion tests the dynamic performance, antiknock properties and energy absorption performance of the honeycomb sandwich plate structure will be revealed. The concrete contents include: deformation characteristics and the dynamic response of the honeycomb cardboard, aluminum honeycomb panel, PHP and PHA four kinds of materials as interlayer medium under impact load, the dynamic behavior and energy absorption performance analysis of influence factors of steel plate sandwich structure under explosive load, composite material dynamic constitutive model analysis, structure parameters optimization analysis and protection ability evaluation. The project is of great significance to improve the protective resistance of existing protective engineering protective door structure.

现有防护工程防护门多采用双层钢板结构，随着武器装备的发展，按照现有常规武器设计规范，防护门结构抗力已经越来越不能满足抗爆防护的需要。通过前期研究工作发现，聚氨酯材料、蜂窝铝材料和蜂窝纸板材料等三种材料具有很好的吸能效果,且质量相对较轻。因此，拟将蜂窝纸板、蜂窝铝板、聚氨酯蜂窝纸板（缩写为PHP）和聚氨酯蜂窝铝板（缩写为PHA）作为钢板结构的中间夹层，通过冲击试验和爆炸试验揭示钢板-蜂窝夹层结构的动力学性能、抗爆性能和吸能性能。具体内容包括： 蜂窝纸板、蜂窝铝板、PHP和PHA四种材料作为夹层介质在冲击荷载作用下的变形特征和动力响应，以及在爆炸荷载作用下钢板-夹层结构的动力学性能和吸能性能影响因素分析，复合材料动力学本构模型分析，结构参数的优化分析和防护能力评价等。该项目对提高现有防护工程防护门结构的防护抗力具有重要意义。

项目以现有防护工程防护门结构抗力和武器发展不相适应，防护能力比较薄弱为研究背景。本项目通过冲击试验、爆炸试验、理论分析和数值模拟相结合的方法，对聚氨酯材料、蜂窝铝材料和蜂窝纸板材料三种材料的吸能效果开展系统研究。建立了聚氨酯蜂窝纸板和聚氨酯蜂窝铝板的本构模型，揭示了在冲击和爆炸条件下聚氨酯蜂窝纸板和聚氨酯蜂窝铝板的屈服破坏和吸能机理，提出了在冲击爆炸条件下防护结构合适的、最优化的结构方案。发表标注的期刊论文20篇，其中SCI收录3篇，EI收录1篇；培养硕士生7名；出席国际学术会议1人次。