Longitudinal elastic nonlinearity of composite�material
It is known that the initial waviness of the fiber affects the stiffness characteristics and strength of the polymer composite material. The article presents a continuum model taking into account the nonlinearity of the longitudinal stiffness of the unidirectional composite. In this study, a finite...
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Gruppo Italiano Frattura
2024-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4664/3939 |
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| author | B.N. Fedulov D.A. Bondarchuk E.V. Lomakin |
| author_facet | B.N. Fedulov D.A. Bondarchuk E.V. Lomakin |
| author_sort | B.N. Fedulov |
| collection | DOAJ |
| description | It is known that the initial waviness of the fiber affects the stiffness characteristics and strength of the polymer composite material. The article presents a continuum model taking into account the nonlinearity of the longitudinal stiffness of the unidirectional composite. In this study, a finite element experiment was conducted to investigate the variations in the longitudinal stiffness of the composite material subjected to uniaxial compression. The experiment considered a range of different degree of fiber�s waviness to comprehensively examine the impact on the material's stiffness. Obtained results explain the difference in stiffness observed in fiber composites in the longitudinal direction under uniaxial tension and compression. Special constitutive relations proposed to model compressive stiffness reduction in longitudinal direction. |
| format | Article |
| id | doaj-art-fd6b641f00f14309a4baabb467b08320 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-fd6b641f00f14309a4baabb467b083202025-02-03T00:39:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932024-01-01186731131810.3221/IGF-ESIS.67.2210.3221/IGF-ESIS.67.22Longitudinal elastic nonlinearity of composite�materialB.N. FedulovD.A. BondarchukE.V. LomakinIt is known that the initial waviness of the fiber affects the stiffness characteristics and strength of the polymer composite material. The article presents a continuum model taking into account the nonlinearity of the longitudinal stiffness of the unidirectional composite. In this study, a finite element experiment was conducted to investigate the variations in the longitudinal stiffness of the composite material subjected to uniaxial compression. The experiment considered a range of different degree of fiber�s waviness to comprehensively examine the impact on the material's stiffness. Obtained results explain the difference in stiffness observed in fiber composites in the longitudinal direction under uniaxial tension and compression. Special constitutive relations proposed to model compressive stiffness reduction in longitudinal direction.https://www.fracturae.com/index.php/fis/article/view/4664/3939fiber wavinesscontinuum modelelastic nonlinearitycompressive modulusunidirectional composite |
| spellingShingle | B.N. Fedulov D.A. Bondarchuk E.V. Lomakin Longitudinal elastic nonlinearity of composite�material Fracture and Structural Integrity fiber waviness continuum model elastic nonlinearity compressive modulus unidirectional composite |
| title | Longitudinal elastic nonlinearity of composite�material |
| title_full | Longitudinal elastic nonlinearity of composite�material |
| title_fullStr | Longitudinal elastic nonlinearity of composite�material |
| title_full_unstemmed | Longitudinal elastic nonlinearity of composite�material |
| title_short | Longitudinal elastic nonlinearity of composite�material |
| title_sort | longitudinal elastic nonlinearity of composite�material |
| topic | fiber waviness continuum model elastic nonlinearity compressive modulus unidirectional composite |
| url | https://www.fracturae.com/index.php/fis/article/view/4664/3939 |
| work_keys_str_mv | AT bnfedulov longitudinalelasticnonlinearityofcompositematerial AT dabondarchuk longitudinalelasticnonlinearityofcompositematerial AT evlomakin longitudinalelasticnonlinearityofcompositematerial |