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Numerical
characterization of material elastic properties for random
fiber composites
Lucian Iorga, Yi Pan and Assimina Pelegri |
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Vol. 3 (2008), No. 7, 1279–1298
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Abstract |
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This paper presents a numerical investigation of the material elastic properties for short-length mostly in-plane random fiber composites, based on microscale geometrical modeling. The particular case considered is that of materials in which the majority of fibers’ orientations are contained or slightly deviate from a dominant plane. Representative volume elements for two types of random fiber composite material geometries with different fiber aspect ratios and volume fractions are generated using a novel technique. The elastic properties of the equivalent homogeneous material are determined using direct three-dimensional finite element analysis. A windowing-type analysis is employed to investigate the influence of the fiber distribution homogeneity on the homogenized elastic properties. The results are compared and validated using two alternative approaches — first, by orientation averaging of the stiffness tensor of the equivalent unidirectional composite determined by direct FEM analysis and, second, by employing the laminated random strand method. |
Keywords
random fiber reinforced composite, representative volume
element, homogenization, finite element analysis
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Milestones
Received: 16 January 2008
Revised: 10 July 2008
Accepted: 12 July 2008
Published: 1 September 2008
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Authors |
| Lucian Iorga | |
| Mechanical and Aerospace
Engineering School of Engineering Rutgers University 98 Brett Road Piscataway, NJ 08854-8058 United States |
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| Yi Pan | |
| Mechanical and Aerospace
Engineering School of Engineering Rutgers University 98 Brett Road Piscataway, NJ 08854-8058 United States |
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| Assimina Pelegri | |
| Mechanical and Aerospace
Engineering School of Engineering Rutgers University 98 Brett Road Piscataway, NJ 08854-8058 United States |
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