It is feasible to design laminated composites with negative Poisson's ratio. Although the minimum value of negative Poisson's ratio design can be done via numerical approach, it is possible to use the analytical method in this paper to perform the following tasks: (a) evaluate the approximated ply orientation angles to obtain maximum transverse strain cy, (b) determine the necessary conditions of design negative Poisson's ratio, and (c) investigate the influence of laminae properties on the Poisson's ratio of a composite laminate.
In this study, it is also found that, in general, the ply orientations for obtaining maximum transverse strain, sy, in a composite laminate are close to 70'/20I%.
Get full access to this article
View all access options for this article.
References
1.
1. Fung, Y. C. (1965), "Foundations of Solid Mechanics," pp. 352-353.
2.
2. Lempriere, B. M. (1968), "Poisson's Ratio in Orthotropic Materials,"AIAA Journal, vol. 6, No. 11,2226-2227.
3.
3. Herakovich, C. T. (1984), "Composite Laminates with Negative Through-the-Thickness Poisson's Ratios,"J. of Composite Materials, vol. 18, pp. 447-455.
4.
4. Miki, M. and Murotsu, Y. (1989), "The Peculiar Behaviour of the Poisson's Ratio of Laminated Fibrous Composites,"JSME International Journal, series I, vol. 32, No. 1, pp. 67-72.
5.
5. Yeh, H.-L., Huang, T. and Yeh, H.-Y. (1992), "An Optimization Study of Randomly-Oriented Composite Laminates Made of Corneal Material Subjected to Plane Stress Condition,"J. of Reinforced Plastics and Composites, vol. 11, pp. 661-669.
6.
6. Yeh, H.-L. and Yeh, H.-Y. (1992), "A Further Investigation of the Isotropy of Randomly-Oriented Composite Laminates,"J. of Reinforced Plastics and Composites, vol. 11, pp. 1431-1445.
7.
7. Zhang, R. (1993), "The Design of Negative Poisson's Ratio for Composite Materials,"J. of Fiber Glass, vol. 2 (in Chinese).
8.
8. Nkansah, M. A., Evans, K. E. and Hutchinson, I. J. (1993), "Modelling the Effects of Negative Poisson's Ratios in Continuous-Fiber Composites,"J. of Material Science, vol. 28, pp. 2687-2692.
9.
9. Zhang, R., Yeh, H.-L. and Yeh, H.-Y. (1998), "A Preliminary Study of Negative Poisson's Ratio of Laminated Fiber Reinforced Composites,"J. of Reinforced Plastics and Composites, vol. 17, No. 18, pp. 1651-1664.
10.
10. Yeh, H.-L., Yeh, H.-Y. and Zhang, R. (1999), "A Study of Negative Poisson's Ratio for the Isotropy of Randomly-Oriented Composite Laminates," accepted for publication in J. of Composite Materials.
11.
11. Tsai, S. W. and Hahn, H. T. (1980), "Introduction to Composite Materials,"Technomic Publishing Co., Inc.
