摘要
利用大型非线性有限元程序ABAQUS和LS-DYNA,对具有填充材料的金属格栅结构的冲击问题进行数值模拟。研究了不同的填充材料(金属泡沫和陶瓷)分别填充到不同的格栅构型(波纹型、蜂窝型和加强六边形)夹层板后,各类夹层板受到金属泡沫子弹和不锈钢子弹冲击时变形与能量吸收特性,探讨了夹层板上下面层板、支撑格栅及填充材料等各部分的吸能比率。研究结果表明,泡沫填充夹层板在缓冲吸能方面具有优势,陶瓷填充夹层板则在抵抗冲击穿透方面更具有优势,不同构型的夹层板,性能略有不同。
The finite element codes ABAQUS and LS_DYNA are employed to analyze the clamped sandwich plates with lattice and filling subjected to impact loading. Three styles of sandwich plates are investigated, ie., corrugated plate, honeycomb plate and kagome plate, each of which is filled with metal foam or ceramic. The numerical simulations involving these sandwich plates subjected to shock of metal foam or rigid projectile, are carried out, and some dynamic mechanical properties, such as deflection and energy absorption, are discussed, and the energy absorption capabilities of different sandwich plates are focused. The results indicate that sandwich plate filled with metal foam is an excellent sandwich structure with strongest energy absorption capability undergoing metal foam projectiles; the sandwich plates filled with ceramic have a higher shock resistance than sandwich plates filled with metal foam under penetration impact of rigid bullet.
出处
《应用力学学报》
CAS
CSCD
北大核心
2009年第4期788-792,共5页
Chinese Journal of Applied Mechanics
基金
国家基础研究计划(2006CB601202)
国家自然科学基金航空联合基金项目(10377010)
国家自然科学基金(10572111)
国家自然科学基金重点项目(10632060)
关键词
夹层板
格栅芯体
金属泡沫
陶瓷
冲击荷载
有限元模拟
sandwich plate, lattice, metal foam, ceramic, impact loading, finite element simulation
