| Experimental Investigation on Thermal Buckling Behavior of Truss-Core Sandwich Panels | |
Yuan W(袁武) ; Song HW(宋宏伟); Wang X(王曦); Huang CG(黄晨光); Yuan, W (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
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| Source Publication | AIAA JOURNAL
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| 2015-04 | |
| Volume | 53Issue:4Pages:948-957 |
| ISSN | 0001-1452 |
| Abstract | This paper presents an experimental study on the thermal buckling behavior of sandwich panels with truss cores. The ultimate goal is to find the critical buckling temperature and examine postbuckling behavior of this newly developed sandwich panel experimentally. A specifically designed fixture, which can introduce in-plane loads to the sandwich panel through thermal expansion mismatch between the specimen and the load frame, is applied in the experiment. High-temperature strain gauges are attached at the center of the sandwich panel face sheets to measure the local in-plane response, and the critical buckling temperature of panels deformed in symmetric mode is determined by using the Southwell method. To obtain the full-field postbuckling mode as well as critical buckling temperature of the sandwich panel deformed in asymmetric mode in high-temperature environments, a noncontact measurement system based on the three-dimensional digital image correlation technique is also developed. The accuracy of the present noncontact measurement technique is validated by the coordinate measurement machine technique, a conventional contact measurement method. It is found that the critical buckling temperature obtained from experiments is lower than that predicted by theoretical and numerical models, due to defects and imperfections of the truss core and sandwich panel during fabrication. Full-field measurement also indicates that local yielding together with overall buckling is the typical deformation mode in the tested specimen. |
| Subject Area | Engineering, Aerospace |
| DOI | 10.2514/1.J053246 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000351466300011 |
| WOS Keyword | SYSTEMS |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Aerospace |
| Funding Organization | National Natural Science Foundation of China [91016025, 11332011, 11472276, 91216303] ; Science and Technology on Scramjet Laboratory |
| Department | LMFS热结构耦合力学 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/49919 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Yuan, W (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Yuan W,Song HW,Wang X,et al. Experimental Investigation on Thermal Buckling Behavior of Truss-Core Sandwich Panels[J]. AIAA JOURNAL,2015,53,4,:948-957. |
| APA | 袁武,宋宏伟,王曦,黄晨光,&Yuan, W .(2015).Experimental Investigation on Thermal Buckling Behavior of Truss-Core Sandwich Panels.AIAA JOURNAL,53(4),948-957. |
| MLA | 袁武,et al."Experimental Investigation on Thermal Buckling Behavior of Truss-Core Sandwich Panels".AIAA JOURNAL 53.4(2015):948-957. |
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