期刊
COMPOSITE STRUCTURES
卷 116, 期 -, 页码 793-804出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2014.06.006
关键词
Carbon fiber; Bending; Curved sandwich panel; Composite failure
资金
- Major State Basic Research Development Program of China (973 Program) [2011CB610303]
- National Science Foundation of China [11222216, 11002041, 11302060]
- Natural Scientific Research Innovation Foundation in Harbin Institute of Technology [HIT.NSRIF.2014025]
- Science and Technology on Advanced Composites in Special Environments Laboratory
- Qatar National Research Fund [NPRP 09-145-2-061]
A study on the bending response of a composite curved panel with pyramidal metallic truss cores suitable for functional applications is presented using a combination of analytical modeling, three-point bending experiments and finite element (FE) based simulations. The aluminum pyramidal cores were constructed using an interlocking method before curing with composite face sheets to fabricate the final structure. A theoretical model was developed to analyze the experiments and develop failure criteria. Three failure modes: (i) face wrinkling, (ii) face crushing, and (iii) debonding between face sheet and truss cores, were considered and theoretical relationships for predicting the collapse load associated with each mode were developed. The experiments were carried out on two sets of specimens with differing face sheet thickness which clearly indicated the important role played by core debonding in determining the peak load of the structure. Localized buckling instabilities were also reported for samples with thinner face sheets. The role of debonding in determining strength was further highlighted by a comparison with FE simulations with suppressed debonding. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据