Localising the Smallest Stiffness and its Direction of a Homogeneous Structure by Spectral and Optimisation Approaches
| Autor: | Jiří Kopal, Petr Henyš, Michal Kuchař, Danas Sutula, Lukas Capek |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Relation (database)
Computer science 0211 other engineering and technologies Structure (category theory) MathematicsofComputing_NUMERICALANALYSIS FOS: Physical sciences 020101 civil engineering 02 engineering and technology 0201 civil engineering Computer Science::Robotics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 021105 building & construction medicine Civil and Structural Engineering ComputingMethodologies_COMPUTERGRAPHICS Computational model Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics business.industry Materials Science (cond-mat.mtrl-sci) Stiffness Structural engineering Modal Homogeneous Structural health monitoring medicine.symptom business Engineering design process |
| Popis: | Structural stiffness plays an important role in engineering design. The analysis of stiffness requires precise experiments and computational models that can be difficult or time-consuming to procure. A novel relation between modal and static stiffness based on modal decomposition is introduced in this study. This relation allows analysing the smallest structural stiffness and its direction. Further, it is shown that the smallest stiffness can be found using an optimisation algorithm that is based on the maximisation of structural compliance. Both approaches are compared on several computational examples leading to similar results in terms of smallest stiffness and its direction. The proposed approaches serve as quantitative/qualitative tools for the analyses of structural stiffness, particularly in structural health monitoring. 28 pages, 13 figures |
| Databáze: | OpenAIRE |
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