Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites
This paper presents the formulation of the hyperelastic strain energy density function for triaxial weave fabric composites. The energy function, which comprises three components: matrix, tow, and interaction, demonstrates a nonlinear stress–strain response. The model constitutes the material expres...
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| Format: | Article |
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2012
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| _version_ | 1796859065643565056 |
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| author | Kueh, Ahmad Beng Hong |
| author_facet | Kueh, Ahmad Beng Hong |
| author_sort | Kueh, Ahmad Beng Hong |
| collection | ePrints |
| description | This paper presents the formulation of the hyperelastic strain energy density function for triaxial weave fabric composites. The energy function, which comprises three components: matrix, tow, and interaction, demonstrates a nonlinear stress–strain response. The model constitutes the material expressions, initial straightening and elastic recovery coefficients, which carry mechanical meaning, properly defined on the basis of micromechanics and elementary structural theory. In the solution, existing widely used but highly iterative fitting procedure that can be cumbersome and computationally expensive is circumvented. It is found that this model captures the experimental response with exceptional agreement in both longitudinal and transverse stretching. During in-plane uniaxial tension, affected invariants are those aligned along the load direction and those off-axis, corresponding to longitudinal and transverse stretching, respectively. Mechanical isotropy has been found valid only in low strain regime. Regardless of load direction, matrix and interaction energies are found to be of isotropic nature. |
| first_indexed | 2024-03-05T19:21:40Z |
| format | Article |
| id | utm.eprints-46994 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:21:40Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | utm.eprints-469942017-09-28T01:26:25Z http://eprints.utm.my/46994/ Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites Kueh, Ahmad Beng Hong TA Engineering (General). Civil engineering (General) This paper presents the formulation of the hyperelastic strain energy density function for triaxial weave fabric composites. The energy function, which comprises three components: matrix, tow, and interaction, demonstrates a nonlinear stress–strain response. The model constitutes the material expressions, initial straightening and elastic recovery coefficients, which carry mechanical meaning, properly defined on the basis of micromechanics and elementary structural theory. In the solution, existing widely used but highly iterative fitting procedure that can be cumbersome and computationally expensive is circumvented. It is found that this model captures the experimental response with exceptional agreement in both longitudinal and transverse stretching. During in-plane uniaxial tension, affected invariants are those aligned along the load direction and those off-axis, corresponding to longitudinal and transverse stretching, respectively. Mechanical isotropy has been found valid only in low strain regime. Regardless of load direction, matrix and interaction energies are found to be of isotropic nature. 2012 Article PeerReviewed Kueh, Ahmad Beng Hong (2012) Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites. Mechanics Of Materials, 47 . pp. 1-23. ISSN 0167-6636 http://dx.doi.org/10.1016/j.mechmat.2012.01.001 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Kueh, Ahmad Beng Hong Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title | Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title_full | Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title_fullStr | Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title_full_unstemmed | Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title_short | Fitting-free hyperelastic strain energy formulation for triaxial weave fabric composites |
| title_sort | fitting free hyperelastic strain energy formulation for triaxial weave fabric composites |
| topic | TA Engineering (General). Civil engineering (General) |
| work_keys_str_mv | AT kuehahmadbenghong fittingfreehyperelasticstrainenergyformulationfortriaxialweavefabriccomposites |