Abstract
Buckling problem is quite important for the engineering practice, mostly in cases of lightweight structures. The use of composites reduces the weight of the structure but gives problems in choice of reliable methods to model buckling and postbuckling behavior of details, especially if they contain thin-walled components. One of the problems is the choice of correct elastic properties of composite material for analysis. Elastic characteristics of composite material depend on the type of loading and uniaxial tension/compression test results in some cases demonstrate an essential difference. The buckling analysis usually assumes compression of the structure and the choice of elastic constants obtained in compression tests leads to more accurate results, but does not guarantee a good correlation with experiments in case of postbuckling analysis due to ignoring some regions with tension stress state. A possible way of material stress-state sensitivity consideration is usage of material models that take into account stiffness susceptibility to different types of loading. Further development of nonlinear elastic model in problems related to buckling and postbuckling analysis for composite materials up to failure is the introduction of material progressive degradation model to consider material properties reduction due to damage in conjunction with nonlinear elasticity.
Similar content being viewed by others
References
Vanpaepegem W, Debaere I, Degrieck J (2006) Modelling the nonlinear shear stress–strain response of glass fibre-reinforced composites. Part II: Model development and finite element simulations. Compos Sci Technol 66:1465–1478
Lomakin EV, Fedulov BN (2015) Nonlinear anisotropic elasticity for laminate composites. Meccanica 50(6):1527–1535
Lomakin EV, Fedulov BN, Melnikov AM (2014) Constitutive models for anisotropic materials susceptible to loading conditions. In: Belyaev A, Irschik H, Krommer M (eds) Mechanics and model-based control of advanced engineering systems. Springer, New York, pp 209–216
Hahn HT, Tsai SW (1973) Nonlinear elastic behavior of unidirectional composite laminae. J Compos Mater 7(1):102–118
Bisagni C, Cordisco P (2006) Post-buckling and collapse experiments of stiffened composite cylindrical shells subjected to axial loading and torque. Compos Struct 73(2):138–149
Acknowledgements
This research was supported by the Russian Foundation for Basic Research (Grant no. 18-31-20026).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Fedorenko, A.N., Fedulov, B.N. Effect of elastic properties dependence of the stress state in composite materials. AS 2, 105–109 (2019). https://doi.org/10.1007/s42401-018-0015-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s42401-018-0015-y