A robustness-based design strategy for composite structures
| Autor: | Francisco Célio de Araújo, Rolf Zimmermann, Richard Degenhardt, Michael Sinapius, Tobias Wille, Fabio da Cunha |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Ultimate load Structural robustness business.industry Thin-walled composite structures Composite number Postbuckling General Medicine Structural engineering Design strategy Finite element method Buckling Robustness (computer science) Structural reliability business Practical implications |
| Zdroj: | Aircraft Engineering and Aerospace Technology. 86:274-286 |
| ISSN: | 0002-2667 |
| DOI: | 10.1108/aeat-04-2013-0070 |
| Popis: | Purpose – This paper aims to present a new robustness-based design strategy for thin-walled composite structures under compressive loading, which combines strength requirements in terms of the limit and ultimate load with robustness requirements evaluated from the structural energy until collapse. Design/methodology/approach – In order to assess the structural energy, the area under the load-shortening curve between several characteristic points such as local buckling, global buckling, onset of degradation and collapse load is calculated. In this context, a geometrically nonlinear finite element analysis is carried out, in which the ply properties are selectively degraded by progressive failure. Findings – The advantage of the proposed methodology is observed by analyzing unstiffened composite plates under compressive loading, wherein the lightest plate that satisfies both strength and robustness requirements can be attained. Practical implications – As a practical implication, this methodology gives a ne... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|