TY  - JOUR
T1  - Meso-Mechanical Analysis of 3D Braided Composites Based on a Finite Element Model
AU - , Xu Kun AU - , Xu Xiwu 
JO  - Journal of Engineering and Applied Sciences
VL  - 2
IS  - 10
SP  - 1553
EP  - 1562
PY  - 2007
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2007.1553.1562
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2007.1553.1562
KW  - Braided composites
KW  -finite element model
KW  -effective elastic properties
KW  -stress distribution
KW  -unit cell
AB  - As for 3D 4-directional rectangular braided composites, a 3-Dimensional (3D) Finite Element Model (FEM) based on a Representative Volume Element (RVE) is established under the periodical displacement boundary conditions, which truly simulates the spatial configuration of the braiding yarns. The FE software ABAQUS is adopted to study the mechanical properties of the composites, including the effective elastic properties and the meso-scale mechanical behaviors. The effects of the braiding angle and the fiber-volume fraction on the engineering elastic constants have been investigated in detail. The predicted effective elastic properties are in good agreement with the available experimental data, demonstrating the applicability of the FEM. By analyzing the stress distribution and deformation of the model, it is proved that the RVE-based FEM can obtain reasonable stress field and successfully represent the meso-scale mechanical behaviors of 3D braided composites containing periodical structures.
ER  -