Abstract
In the paper, the bending stiffness and strength of multilayer structural elements in relation to the mechanical properties of layers and their number layout and sizes are investigated and the corresponding correlations are established. It is found that the most rational structure of a multilayer element in bending is a symmetric three-layer structure formed from two materials with the thickness of the core less than the half-thickness of the element. The values of normal stresses in the layers of a multilayer beam in bending depends on its bending stiffness and the position of layers relative to the neutral axis. The influence of the number of layers on the stiffness of the structural element and on the magnitude of normal stresses is insignificant.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
D. Hui (ed.), Proceedings of International Conference on Composites Engineering ICCE/8, University of New Orlean, New Orlean (2001).
T. Y. Kam “The development of a laminated composite sandwich panel-form loudspeaker,” in: Proc. Int. Conf. Compos. Eng. (ICCE/8), University of New Orlean, New Orlean (2001), pp. B15–B18.
E. Adda Bedia, A. Tounsi, and Z. Sereir, “A quantitative study of the anisotropy influence on the hygrothermal behaviour of laminate composite plates,” in: Proc. Int. Conf. Compos. Eng. (ICCE/8), University of New Orlean, New Orlean (2001), pp. 71–72.
J. Bareisis and D. Garuckas, “Stress state of multilayer structural elements subjected to static loading and optimization of laminated beams and bars,” Mech. Compos. Mater., 36, No. 5, 593–606 (2000).
A. Paulauskas and J. Bareisis, “Calculation methods of thin-walled constructions made of composite materials,” in: Composite Design, Proc. ICCM-9, July, 1993, Madrid (1993), pp. 843–853.
J. Bareisis and D. Garuckas, “The stiffness and strength of multilayer bars,” Mechanika, No. 4, 23–30 (2000).
J. Bareisis, D. Garuckas, A. Mikulskas, and D. Striukiene, “ Strains and stresses of three-layer composite bars and beams,” Statyba, No. 2, 5–11 (1997).
J. Bareisis, D. Garuckas, A. Mikulskas, and D. Striukiene, “The stiffness and deformation of three-layer structural elements,” in: Proc. Int. Conf. “Mechanika-97,” Kaunas (1997), pp. 257–264.
A. Mikulskas, D. Garuckas, and J. Bareisis, “The stiffness and strength of asymmetric multilayer constructions,” Mechanine Technologija, No. 27, 145–157 (1999).
D. Garuckas, The Investigation of Strength and Stiffness of Laminated Composite Structural Elements, Doctoral Thesis, Kaunas (2000).
V. V. Vasiliev and Yu. M. Tarnopol'skii (eds.), Composite Materials. Handbook [in Russian], Mashinostroenie, Moscow (1990).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Garuckas, D., Bareisis, J. Influence of Different Factors on the Stiffness and Strength of Multilayer Composite Elements. Mechanics of Composite Materials 39, 153–164 (2003). https://doi.org/10.1023/A:1023413529598
Issue Date:
DOI: https://doi.org/10.1023/A:1023413529598