A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites
The complexity of the microstructure makes the strength prediction and failure analysis of 3D braided composites difficult. A new unit cell geometrical model, taken as the representative volume element (RVE), is proposed to describe the yarn configuration of 3D braided composites produced by the fou...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/513724 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832548434994790400 |
|---|---|
| author | Kun Xu |
| author_facet | Kun Xu |
| author_sort | Kun Xu |
| collection | DOAJ |
| description | The complexity of the microstructure makes the strength prediction and failure analysis of 3D braided composites difficult. A new unit cell geometrical model, taken as the representative volume element (RVE), is proposed to describe the yarn configuration of 3D braided composites produced by the four-step 1 × 1 method. Then, based on the periodical boundary conditions, a RVE-based micromechanical model by using the nonlinear finite element method has been presented to predict the progressive damage and the strength of 3D braided composites subjected to tensile loading. The numerical model can simulate the effect of damage accumulation on the tensile stress-strain curve by combining the proposed failure criteria and the stiffness degradation model. The longitudinal shear nonlinearity of braiding yarn is considered in the model. To verify the model, two specimens with typical braiding angles were selected to conduct the simulations. The predicted stress-strain curves by the model compared favorably with the experimental data, demonstrating the applicability of the micromechanical finite element model. The effect of the nonlinear shear parameter on the tensile stress-strain curve was discussed in detail. The results indicate that the tensile mechanical behaviors of 3D braided composites are affected by both the yarn shear nonlinearity and the damage accumulation. |
| format | Article |
| id | doaj-art-e617e3ab2d774111a36ed794eaead5a3 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e617e3ab2d774111a36ed794eaead5a32025-02-03T06:14:07ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/513724513724A Numerical Study on the Progressive Failure of 3D Four-Directional Braided CompositesKun Xu0School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 611731, ChinaThe complexity of the microstructure makes the strength prediction and failure analysis of 3D braided composites difficult. A new unit cell geometrical model, taken as the representative volume element (RVE), is proposed to describe the yarn configuration of 3D braided composites produced by the four-step 1 × 1 method. Then, based on the periodical boundary conditions, a RVE-based micromechanical model by using the nonlinear finite element method has been presented to predict the progressive damage and the strength of 3D braided composites subjected to tensile loading. The numerical model can simulate the effect of damage accumulation on the tensile stress-strain curve by combining the proposed failure criteria and the stiffness degradation model. The longitudinal shear nonlinearity of braiding yarn is considered in the model. To verify the model, two specimens with typical braiding angles were selected to conduct the simulations. The predicted stress-strain curves by the model compared favorably with the experimental data, demonstrating the applicability of the micromechanical finite element model. The effect of the nonlinear shear parameter on the tensile stress-strain curve was discussed in detail. The results indicate that the tensile mechanical behaviors of 3D braided composites are affected by both the yarn shear nonlinearity and the damage accumulation.http://dx.doi.org/10.1155/2013/513724 |
| spellingShingle | Kun Xu A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites Advances in Materials Science and Engineering |
| title | A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites |
| title_full | A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites |
| title_fullStr | A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites |
| title_full_unstemmed | A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites |
| title_short | A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites |
| title_sort | numerical study on the progressive failure of 3d four directional braided composites |
| url | http://dx.doi.org/10.1155/2013/513724 |
| work_keys_str_mv | AT kunxu anumericalstudyontheprogressivefailureof3dfourdirectionalbraidedcomposites AT kunxu numericalstudyontheprogressivefailureof3dfourdirectionalbraidedcomposites |