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EnglishThe article describes a method that combines finite element analysis and genetic algorithms in order to determine the elastic properties of materials from the full-field measurement of the surface displacements of plates under flexural loads. An optimizing process updates the elastic constants in a numerical model until the calculated displacements fit the experimental data. The unknown parameters are identified simultaneously by a single test and without damaging the structure. An original method is also proposed for optimizing the loading and constraining conditions of the specimen with a view to obtaining faster and more stable solutions. The procedures were applied to a steel specimen whose displacement field was detected by speckle interferometry.
Determining elastic constants of materials with interferometric techniques / Pagnotta, Leonardo. - In: INVERSE PROBLEMS IN SCIENCE & ENGINEERING. - ISSN 1741-5977. - 14:8(2006), pp. 801-818.
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| Titolo: | Determining elastic constants of materials with interferometric techniques |
| Autori: | |
| Data di pubblicazione: | 2006 |
| Rivista: | |
| Citazione: | Determining elastic constants of materials with interferometric techniques / Pagnotta, Leonardo. - In: INVERSE PROBLEMS IN SCIENCE & ENGINEERING. - ISSN 1741-5977. - 14:8(2006), pp. 801-818. |
| Abstract: | The article describes a method that combines finite element analysis and genetic algorithms in order to determine the elastic properties of materials from the full-field measurement of the surface displacements of plates under flexural loads. An optimizing process updates the elastic constants in a numerical model until the calculated displacements fit the experimental data. The unknown parameters are identified simultaneously by a single test and without damaging the structure. An original method is also proposed for optimizing the loading and constraining conditions of the specimen with a view to obtaining faster and more stable solutions. The procedures were applied to a steel specimen whose displacement field was detected by speckle interferometry. |
| Handle: | http://hdl.handle.net/20.500.11770/157740 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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