Effects of hygrothermal environment on the buckling and postbuckling performances of stiffened composite panels under axial compression

Feng Yu; Ma Binlin; Cui Ronghong; An Tao; He Yuting; Jiao Shengbo

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Effects of hygrothermal environment on the buckling and postbuckling performances of stiffened composite panels under axial compression

机译：湿热环境对轴压下加强复合板屈曲和截止性能的影响

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Effects of hygrothermal environment on the buckling and postbuckling performances of stiffened composite panels under axial compression were investigated experimentally and numerically in this paper. Hygrothermal aging experiment on stiffened composite panels was conducted in 70 degrees C distilled water and the moisture uptake was analyzed every 24 h until to moisture saturation. Moisture uptake process and moisture content distribution along the thickness direction were analyzed by using finite element (FE) method. Thin region and thick region of stiffened composite panels were defined and classified respectively according to moisture uptake process. Then the axial compressive experiments were performed on the hygrothermal aged specimens, with comparison of compression on virgin specimens. Strains, loads, out-of-plane displacements, shortening and failure modes were analyzed comparatively. The results indicate the hygrothermal environment impose much negative effects on the stability and carrying ability of specimens. In the end, a new approach for simulating the dynamic properties of unsaturated specimens was proposed, which considered the gradient of moisture content. Effects of various moisture content on buckling and postbuckling performances were determined.

机译：本文在实验中求解湿热对轴向压缩下加强复合板的屈曲和出现性能的影响。在70摄氏度的蒸馏水中进行了加强复合板的湿热剂老化实验，每24小时分析水分吸收直至水分饱和度。通过使用有限元（Fe）方法分析沿厚度方向的湿气吸收过程和湿度含量分布。根据湿度吸收过程分别定义和分类薄区域和加强的复合板的厚区域。然后在湿热剂老化的样本上进行轴向压缩实验，比较原子标本的压缩。相对分析菌株，载荷，平面外位移，缩短和故障模式。结果表明湿热环境对标本的稳定性和携带能力施加了太大的负面影响。最后，提出了一种模拟不饱和样品的动态性质的新方法，其认为是水分含量的梯度。确定各种水分含量对屈曲和后突出性能的影响。

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来源
《Composite Structures》 |2020年第6期|112132.1-112132.15|共15页
作者
Feng Yu; Ma Binlin; Cui Ronghong; An Tao; He Yuting; Jiao Shengbo;
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作者单位

Air Force Engn Univ Aeronaut & Astronaut Engn Coll Xian 710038 Peoples R China;

Air Force Engn Univ Aeronaut & Astronaut Engn Coll Xian 710038 Peoples R China;

Air Force Engn Univ Aeronaut & Astronaut Engn Coll Xian 710038 Peoples R China;

Air Force Engn Univ Aeronaut & Astronaut Engn Coll Xian 710038 Peoples R China;

Northwestern Polytech Univ Sch Aeronaut Xian 710072 Peoples R China;

Aviat Univ Air Force Sch Aviat Operat & Serv Changchun 130000 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Stiffened composite panel; Hygrothermal environment; Buckling; Postbuckling; Gradient of moisture content; Finite element method;

机译：加强的复合板;湿热环境;屈曲;出版物;水分含量的梯度;有限元法;

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1. Effect of hygrothermal condition on buckling and post-buckling performance of CCF300/5228A aero composite stiffened panel under axial compression [J] . Feng Yu, He Yuting, An Tao, Journal of Reinforced Plastics and Composites . 2015,第12期

机译：湿热条件对CCF300 / 5228A航空复合材料加劲板轴向压缩屈曲和后屈曲性能的影响
2. Investigation on the Buckling and Postbuckling Performance of Aero Stiffened Composite Panels Under Axial Compression [J] . Feng Yu, Zhang Haoyu, Tan Xiangfei, Polymer Composites . 2018,第7期

机译：轴向压缩下Aero加强复合板屈曲和出版物性能的调查
3. Postbuckling and failure analysis of stiffened composite panels subjected to hydro/thermal/mechanical coupled environment under axial compression [J] . Xiaopeng Shi, Shulin Li, Fei Chang, Composite Structures . 2014,第deca期

机译：水压/热力/机械耦合环境下加筋复合板在轴向压缩下的屈曲和破坏分析
4. Experiments on Axial Compression Postbuckling Behavior of Stiffened Cylindrical Composite Panels [C] . H. Abramovich, A. Grunwald, P. Pevsner, 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference ; 11th AIAA/ASME/AHS Adaptive Structures Conference ; 5th AIAA Non-Deterministic Approaches Forum ; 4th AIAA Gossamer Spacecraft Forum ; AIAA Dynamics Specialists Conference . 2003

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5. Buckling and postbuckling analysis of stiffened composite panels in axial compression. [D] . Park, Oung. 1999

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6. Cross-Influence between Intra-Laminar Damages and Fibre Bridging at the Skin–Stringer Interface in Stiffened Composite Panels under Compression [O] . Angela Russo, Andrea Sellitto, Salvatore Saputo, 2019

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Effects of hygrothermal environment on the buckling and postbuckling performances of stiffened composite panels under axial compression

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