摘要
设计出一种新型易碎复合材料结构。它由若干子构件按拓扑互锁原理组合成一种可承载的整体结构,结构中各子构件接触面无粘结,当约束被解除时整个结构即可散落,完成触发碎裂的工作机制。采用高精度模压成型制备出了直角三角板形的拓扑互锁复合材料结构,通过试验研究了该结构在不同横向力作用下的力学行为及其承载能力,并采用有限元法对其进行数值分析。试验结果表明:拓扑互锁易碎复合材料结构在垂直于结构平面的集中载荷作用下,力与位移呈非线性变化。有限元分析结果与试验结果吻合。
A new kind of fragile composite material structure was designed based on topological interlocked principle. In this structure every part without bonding can lead the interlocking function to be vanished under the condition of unconstraint. The topological interlocking fragile composites structure composed of isosceles right-angled triangle plate was prepared by high precision compression molding. The mechanical behaviors of this structure under the different lateral loads and its load capacity were studied with the help of experiment and the FEM methods. The results show that the displacement changes with the force nonlinearly when a vertical point load is applied on this structure. The FEM calculated results agree well with the experimental results.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2008年第12期1454-1457,共4页
Acta Armamentarii
基金
国家自然科学基金资助项目(10472106)
关键词
固体力学
拓扑互锁
易碎复合材料
有限元
solid mechanics
topological interlocking
fragile composite material
finite element
