Influence of microstructure on rate-dependent response of unidirectional fibrous composites
This paper outlines prediction of the macroscopic response of unidirectional fibrous composites made either from basalt or carbon fibers impregnated by a polymeric epoxy matrix. The viscoelastic response of the matrix phase was represented by the Maxwell chain model. A series of creep tests performe...
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| Language: | English |
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Czech Technical University in Prague
2022-03-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8124 |
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| author | Soňa Valentová Michal Šejnoha Jan Vorel Zdeněk Prošek |
| author_facet | Soňa Valentová Michal Šejnoha Jan Vorel Zdeněk Prošek |
| author_sort | Soňa Valentová |
| collection | DOAJ |
| description | This paper outlines prediction of the macroscopic response of unidirectional fibrous composites made either from basalt or carbon fibers impregnated by a polymeric epoxy matrix. The viscoelastic response of the matrix phase was represented by the Maxwell chain model. A series of creep tests performed at several stress levels served as a stepping stone for the model calibration. The macroscopic behavior of both composites was first examined via computational homogenization. Attention was accorded to computational cells with variable size extracted from large representative images. We observed that selecting the computational model as a sufficiently large test window should be approached with caution. Because initial designs often need a large parametric study to test various material and geometrical patterns, this study was then supported by computationally much more effective Mori-Tanaka averaging scheme, clearly showing its potential even if loading the composite beyond its elastic limit. |
| format | Article |
| id | doaj-art-4babb5f6d6cd40279e97d3e9e84fa3ae |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-4babb5f6d6cd40279e97d3e9e84fa3ae2025-08-20T03:58:22ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822022-03-0134127–132127–13210.14311/APP.2022.34.01275364Influence of microstructure on rate-dependent response of unidirectional fibrous compositesSoňa Valentová0Michal Šejnoha1Jan Vorel2Zdeněk Prošek3Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech RepublicThis paper outlines prediction of the macroscopic response of unidirectional fibrous composites made either from basalt or carbon fibers impregnated by a polymeric epoxy matrix. The viscoelastic response of the matrix phase was represented by the Maxwell chain model. A series of creep tests performed at several stress levels served as a stepping stone for the model calibration. The macroscopic behavior of both composites was first examined via computational homogenization. Attention was accorded to computational cells with variable size extracted from large representative images. We observed that selecting the computational model as a sufficiently large test window should be approached with caution. Because initial designs often need a large parametric study to test various material and geometrical patterns, this study was then supported by computationally much more effective Mori-Tanaka averaging scheme, clearly showing its potential even if loading the composite beyond its elastic limit.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8124viscoelasticityfibrous compositesmori-tanaka methodperiodic unit cellgeneralized leonov modelmaxwell chain modelcreep |
| spellingShingle | Soňa Valentová Michal Šejnoha Jan Vorel Zdeněk Prošek Influence of microstructure on rate-dependent response of unidirectional fibrous composites Acta Polytechnica CTU Proceedings viscoelasticity fibrous composites mori-tanaka method periodic unit cell generalized leonov model maxwell chain model creep |
| title | Influence of microstructure on rate-dependent response of unidirectional fibrous composites |
| title_full | Influence of microstructure on rate-dependent response of unidirectional fibrous composites |
| title_fullStr | Influence of microstructure on rate-dependent response of unidirectional fibrous composites |
| title_full_unstemmed | Influence of microstructure on rate-dependent response of unidirectional fibrous composites |
| title_short | Influence of microstructure on rate-dependent response of unidirectional fibrous composites |
| title_sort | influence of microstructure on rate dependent response of unidirectional fibrous composites |
| topic | viscoelasticity fibrous composites mori-tanaka method periodic unit cell generalized leonov model maxwell chain model creep |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8124 |
| work_keys_str_mv | AT sonavalentova influenceofmicrostructureonratedependentresponseofunidirectionalfibrouscomposites AT michalsejnoha influenceofmicrostructureonratedependentresponseofunidirectionalfibrouscomposites AT janvorel influenceofmicrostructureonratedependentresponseofunidirectionalfibrouscomposites AT zdenekprosek influenceofmicrostructureonratedependentresponseofunidirectionalfibrouscomposites |