A two-scale method for predicting the mechanical properties of 3D braided composites with internal defects
Source abstract
Abstract
Abstract Pore defects have significant effect on the mechanical properties of 3D braided composites. Two-scale finite element models of the fiber tows and the braided composites are developed to predict the elastic properties and the micro stress of 3D braided composites. Two basic types of pore defects, the voids in resin matrix and the dry patches in fiber tows, have been taken into account. Periodical boundary conditions are applied on the two-scale FE models by the coupling and constraint equation defining commands in ANSYS. The predicted effective elastic constants agree well with the available experimental data, demonstrating the validity of the two-scale FE models. The effects of braiding angle and fiber volume fraction on the engineering elastic constants are discussed. Furthermore, the effects of two types of defects on the effective elastic properties of 3D braided composites are also discussed in detail. Some useful conclusions are drawn herein. From simulation, dry patches in fiber tows have more significant effect on the elastic properties than voids in matrix.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Composite Structure Analysis and Optimization · Composite Material Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
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1. Progressive damage analysis and strength prediction of 2D plain weave composites10.1016/j.compositesb.2012.10.026 ↗
2. Investigation on the tensile properties of three-dimensional full five-directional braided composites10.1016/j.commatsci.2013.04.010 ↗
3. Ko FK. Three-dimensional fabrics for composites—an introduction to the magnaweave structure, Proceedings of the ICCM-4 Japan Society Composites Material, Tokyo, Japan, 1982. p. 1609–19.
4. Longitudinal and transverse moduli and strengths of 3-D braided textile composites with low braid angles10.1177/002199839603000802 ↗
5. Microstructure/property relationships in three-dimensionally braided fiber composites10.1016/0266-3538(95)00021-6 ↗
6. On the microstructure of three-dimensional braided preforms10.1016/S0266-3538(98)00079-7 ↗
7. Finite element analysis of 3D braided composites based on three unit-cells models10.1016/j.compstruct.2012.11.003 ↗
8. A new analytical model on predicting the elastic properties of 3D full five-directional braided composites based on a multiunit cell model10.1016/j.compositesb.2015.08.052 ↗
9. Computer emulation of fabric macro and microstructure in three-dimensionally braided composites
10. Damage simulation for 3D braided composites by homogenization method
11. Microstructure and mechanical properties of three-dimensional five-directional braided composites10.1016/j.ijsolstr.2009.05.013 ↗
12. Theoretical prediction on the mechanical properties of 3D braided composites using a helix geometry model10.1016/j.compstruct.2013.01.016 ↗
13. Finite element modeling of mechanical properties of 3D five-directional rectangular braided composites10.1016/j.compositesb.2011.05.042 ↗
14. Analytical prediction of the elastic properties of 3D braided composites based on a new multiunit cell model with consideration of yarn distortion10.1016/j.mechmat.2015.09.007 ↗
15. Mechanical analysis of 3-D braided composites by the finite multiphase element method10.1016/S0266-3538(99)00087-1 ↗
16. An integrated micromechanical model and BP neural network for predicting elastic modulus of 3-D multi-phase and multi-layer braided composite10.1016/j.compstruct.2014.11.052 ↗
17. Microstructure modeling and prediction of effective elastic properties of 3D multiphase and multilayer braided composite10.1179/026708310X12699498462760 ↗
18. The prediction on mechanical properties of 4-step braided composites via two-scale method10.1016/j.compscitech.2006.08.028 ↗
19. Mechanical analysis of 3D braided composites: a finite element model10.1016/j.compstruct.2003.09.041 ↗
20. Predicting the nonlinear response and failure of 3D braided composites10.1016/j.matlet.2004.05.057 ↗
21. Nonlinear behavior of the constitutive simulation of meso-scopic computational mechanics for three-dimensional multi-directional braided composites
22. Progressive damage and nonlinear analysis of 3D four-directional braided composites under unidirectional tension10.1016/j.compstruct.2008.07.016 ↗
23. Asymptotic expansion homogenization for simulating progressive damage of 3D braided composites10.1016/j.compstruct.2009.09.026 ↗
24. A mechanical model of 3D braided composites with transverse and longitudinal cracks10.1016/j.compstruct.2004.05.020 ↗
25. Numerical simulation of plain weave composites with defects under unidirectional tension
26. An FEM analysis with consideration of random void defects for predicting the mechanical properties of 3D braided composites
27. Xiu · 2001