Non-linear stiffness response of corrugated laminates in tensile loading
| Autor: | Lukas Ruppen, Claudia Thurnherr, Paolo Ermanni, Gerald Kress |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Stiffness 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Finite element method Nonlinear system 020303 mechanical engineering & transports 0203 mechanical engineering Ultimate tensile strength Ceramics and Composites medicine Linear approximation medicine.symptom Composite material 0210 nano-technology business Anisotropy Material properties Civil and Structural Engineering Parametric statistics |
| Zdroj: | Composite Structures. 157:244-255 |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2016.08.038 |
| Popis: | Corrugated laminates have highly anisotropic stiffness properties. Therefore, they are interesting candidates for flexible skins. The geometrically non-linear stiffness response of corrugated sheets is crucial for applications with large deformations. The present paper analyzes the governing mechanisms that drive the non-linear tensile behavior and suggests a model to analyze corrugated structures. The mechanical response mainly depends on the geometry such as amplitude and thickness of the corrugation and the material properties. The proposed model calculates the mechanical response based on a simplified model consisting of rods and discrete torsional springs. It is verified by comparison with non-linear structural analysis with FEM and experimentally validated by using samples manufactured by 3D printing. The paper also presents a parametric study investigating the influence of the geometry on the non-linear behavior and we identify the limits of linear approximation of the structural response of corrugated laminates. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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