Bending response of carbon fiber composite sandwich beams with three dimensional honeycomb cores
Bending response of carbon fiber composite sandwich beams with three dimensional honeycomb cores
复制标题
三维蜂窝芯碳纤维复合材料夹层梁的弯曲响应
DOI：
10.1016/j.compstruct.2013.09.035
复制
发表时间：
2014-02-01
影响因子：
6.3
通讯作者：
Pan, Shidong
中科院分区：
文献类型：
--
作者：
Xiong, Jian;Ma, Li;Pan, Shidong
本文研究了碳纤维复合材料卵型和角锥型蜂窝梁的弯曲性能和破坏模式。测试了两种夹层梁的三点弯曲响应。在三点弯曲载荷作用下，考虑了面破裂、面压碎、芯体压碎和脱粘等破坏模式，给出了预测每种模式破坏载荷的理论关系式。建立了复合材料蜂窝夹层梁的失效机理图，并对金字塔形和卵形蜂窝夹层梁的弯曲失效进行了预测。采用解析和实验方法研究了三点弯曲条件下的端面起皱和芯部脱粘，并对最大位移进行了研究。采用有限元法计算了两种不同蜂窝夹芯夹层梁的最大位移与外载荷之比。并对两种蜂窝梁进行了比较。(C)2013爱思唯尔有限公司保留所有权利。
Bending properties and failure modes of carbon fiber composite egg and pyramidal honeycomb beams were studied and presented in this paper. Three point bending responses of both sandwich beams were tested. Face wrinkling, face crushing, core member crushing and debonding were considered, and theoretical relationships for predicting the failure load associated with each mode were presented under three point bending load. Failure mechanism maps were constructed to predict the failure of composite sandwich beams with pyramidal and egg honeycomb cores subjected to bending. Face wrinkling and core debonding have been investigated under three point bending and the maximum displacement was studied using analytical and experimental methods. The finite element method was employed to determine the ratio (maximum displacement/applied load) of sandwich beam with two different honeycomb cores. Comparisons between two kinds of honeycomb beams were also conducted. (C) 2013 Elsevier Ltd. All rights reserved.