A thorough understanding of 2D braided composites elastic behavior is necessary for stiffness critical applications. This article outlines the effects of radius of curvature of a unit cell on 2D braided tubular composites’ elastic constants via a sensitivity study. The proposed model is verified using literature and experimental results. The proposed model is first compared to an existing flat unit cell model by setting the radius of curvature to near infinity; elastic constants are in very good agreement. Finally, very good agreement between the experimental and predicted results is observed.
Ayranci, C. and Carey, J. ( 2008). 2D Braided Composites: A Review for Stiffness Critical Applications, Composite Structures, 85(1): 43-58.
2.
Tsai, K.-H., Hwan, C.-L., Chen, W.-L. and Chiu, C.-H. ( 2008). A Parallelogram Spring Model for Predicting the Effective Elastic Properties of 2D Braided Composites, Composite Structures , 83(3): 273-283.
3.
Yuksekkaya, M.E. and Adanur, S. (2009). Analysis of Polymeric Braided Tubular Structures Intended for Medical Applications , Textile Research Journal, 79(2): 99-109.
4.
Zhang, P., Gui, L.-J. and Fan, Z.-J. ( 2009). An Analytical Model for Predicting the Elastic Properties of Triaxially Braided Composites, Journal of Reinforced Plastics and Composites, 28(15): 1903-1916.
5.
Pickett, A.K. , Sirtautas, J. and Erber, A. (2009). Braiding Simulation and Prediction of Mechanical Properties, Applied Composite Materials , 16(6): 345-364.
6.
Naik, R.A. ( 1996). Analysis of Woven and Braided Fabric-reinforced Composites , ASTM Special Technical Publication, 1274: 239-263.
7.
Huang, Z.M. ( 2000). The Mechanical Properties of Composites Reinforced with Woven and Braided Fabrics, Composites Science and Technology , 60(4): 479-498.
8.
Aggarwal, A. , Ramakrishna, S. and Ganesh, V.K. ( 2001). Predicting the In-plane Elastic Constants of Diamond Braided Composites, Journal of Composite Materials, 35(8): 665-688.
9.
Yan, Y. and Van Hoa, S. ( 2002). Energy Approach for Prediction of Mechanical Behavior of 2-D Triaxially Braided Composites Part II: Parameter Analysis, Journal of Composite Materials, 36(10): 1233-1253.
10.
Carey, J., Fahim, A. and Munro, M. ( 2004). Predicting Elastic Constants of 2D-Braided Fiber Rigid and Elastomeric-Polymeric Matrix Composites, Journal of Reinforced Plastics and Composites, 23(17): 1845-1857.
11.
Goyal, D., Tang, X., Whitcomb, J.D. and Kelkar, A.D. ( 2005). Effect of Various Parameters on Effective Engineering Properties of 2 × 2 Braided Composites, Mechanics of Advanced Materials and Structures, 12(2): 113-128.
12.
Ayranci, C. and Carey, J.P. ( 2009). Predicting the Longitudinal Elastic Modulus of Braided Tubular Composites Using a Curved Unit-Cell Geometry , Composite Part B, 41(3): 229-235.
13.
Ko, F.K. , Pastore, C.M. and Head, A.A. ( 1989). Formation of Industrial Braids, In: Handbook of Industrial Braiding, pp. 3-1-3-3, Atkins and Pearce, Covington , Kentucky.
14.
Raju, I.S. and Wang, J.T. ( 1994). Classical Laminate Theory Models for Woven Fabric Composites , Journal of Composites Technology and Research , 16(4): 289-303.
15.
Carey, J., Munro, M. and Fahim, A. ( 2003). Longitudinal Elastic Modulus Prediction of a 2-D Braided Fiber Composite, Journal of Reinforced Plastics and Composites , 22(9): 813-831.
16.
Flanagan, R.C. and Munro, M. (1986). High Energy Density Fibre Composite Rotors, Vol. 2, University of Ottawa , Technical Report No UOME-FP-8603-1.
17.
Popov, E.P. ( 1990). Engineering Mechanics of Solids, 2nd edn, p. 224, Prentice Hall, Toronto.
18.
Carey, J., Fahim, A. and Munro, M. ( 2004). Design of Braided Composite Cardiovascular Catheters Based on Required Axial, Flexural, and Torsional Rigidities, Journal of Biomedical Materials Research - Part B, Applied Biomaterials, 70(1): 73-81.
