3种点阵金属三明治板的抗侵彻性能模拟分析  

PENETRATION AND PERFORATION PERFORMANCE OF THREE PYRAMIDAL LATTICE-CORED SANDWICH PLATES:NUMERICAL SIMULATIONS

作　　者：倪长也[1] 金峰[1] 卢天健[1] 李裕春[2] 

机构地区：[1]西安交通大学强度与振动教育部重点实验室,西安710049 [2]解放军理工大学工程兵工程学院,南京210007

出　　处：《力学学报》2010年第6期1125-1137,共13页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家重点基础研究发展计划(2006CB601202);国家自然科学基金(10632060);高等学校学科创新引智计划(B06024);教育部新世纪优秀人才支持计划(NCET-08-0429);中央高校基本科研业务费专项资金资助项目~~

摘　　要：对3种不同的点阵金属芯体三明治板受钢质弹丸侵彻作用下的抗侵彻性能进行了有限元模拟研究,包括空心金字塔三明治板、嵌入陶瓷柱金字塔三明治板和注入环氧树脂陶瓷金字塔三明治板.随着结构、材料复杂性的递增,以期望从中得出各子结构、各材料在三明治板抗侵彻过程中的吸能表现.弹丸作用于板的入射速度及出射速度也是关注的重要参数,用以量化确定三明治结构各组分对弹丸的弹道极限和抗侵彻能力的影响.研究表明,陶瓷材料因其具有高强度和高硬度等特点,可以显著提高金属三明治板结构的抗侵彻能力;环氧树脂材料可使离散的板结构保持整体性,在三明治板受侵彻作用时,吸收大量能量,从而实现大幅提高结构的抗侵彻性能的目的;因其材料/结构的完备性,注入环氧树脂陶瓷金字塔三明治板具有最高的弹道极限速度,抗侵彻能力也最强.The ballistic performances of three different kinds of sandwich plates with pyramidal lattice cores are numerically evaluated with the method of finite elements,including empty lattice-cored sandwich without any insertion,ceramic filled sandwich,and ceramic and epoxy resin filled sandwich.As the complexity of the sandwich structure and material composition increase,the energy absorption performance of the sub-structures and the sandwich plate as a whole is quantified.Both the incidence and exit velocities of the projectile are considered to establish the ballistic limit as well as the ballistic performance of the sandwich plates.Obtained results reveal that ceramic insertions lead to enhanced penetration resistance of the sandwich due to their high-strength and high-hardness characteristics,whereas the use of epoxy resin improves the integrity of the sandwich so that more energy of the projectile can be absorbed.Therefore,the third type of sandwich（ceramic and epoxy resin filled） achieves the highest ballistic limit velocity and the best ballistic performance mainly due to its structural integrity.

关 键 词：侵彻 超轻结构 三明治板 弹道极限 有限元模拟 

分 类 号：O347.3[理学—固体力学]