An experimental and numerical analysis for stiffened composite panel subjected to shear loading in hygrothermal environment
| Autor: | Lekun Li, Xiaopeng Shi, Tie-Jun Zhang, Shulin Li, Fei Chang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Numerical analysis Absorption curve Composite number 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Buckling Shear (geology) Ceramics and Composites Single equation Water diffusion Composite material 0210 nano-technology business Civil and Structural Engineering |
| Zdroj: | Composite Structures. 138:107-115 |
| ISSN: | 0263-8223 |
| Popis: | This paper presents a detailed experimental and numerical investigation on absorption and shear behaviors of stiffened composite panel subjected to hygrothermal environment. Due to the special and complex configurations of stiffened composite panel, water diffusion process should be divided to two absorption phases. Compared to conventional single equation by Fick’s law, two absorption equations in this model could describe the absorption curve of experimental result perfectly. The combination of empirical formulae and finite element model is used to study buckling and postbuckling behavior for stiffened composite panel subjected to shear loading in hygrothermal environment. The buckling loads and failure loads of unaged specimens decreased approximately 10% and 25%. Good agreement between experimental data and numerical results is observed. According to experimental and numerical results, failure modes of the hygrothermal specimens include panel cracks and debonding of stiffeners. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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