Agoras, Michalis
Assistant Professor, PhD'10 University of Pennsylvania, USA
Nonlinear Composite Materials - Homogenization Theories✉ agoras (at) uth.gr
Office Hours: Tuesday 16:00-18:00
Michalis Agoras obtained his Diploma in Mechanical Engineering from the University of Thessaly in 2005. He received his M.Sc. and Ph.D. in Mechanical Engineering and Applied Mechanics from the University of Pennsylvania in 2010.
During the period 2010-2015, he worked as Research Associate at the Madrid’ s Institute for Advanced Studies of Materials (2010-2013) and at the University of Pennsylvania (2013-2015). On April 2015, he joined the Faculty of the Mechanical Engineering Department at the University of Thessaly, where he currently is Assistant Professor of Nonlinear Composite Materials and Homogenization Theories.
His research interests fall primarily into the area of the Nonlinear Mechanics of Composites, focusing on the determination of the macroscopic response of heterogeneous (or composite) materials as a function of the underlying microstructure and the local material properties of the constituent (nonlinear) phases of these materials. In this context, he develops homogenization methods and constitutive models for materials such as polycrystalline metals, porous ductile materials, shape memory alloys, semi-crystalline polymers, fiber-reinforced elastomers, etc. In addition, he develops constitutive relations for the evolution of the microstructure under finite-strain loading conditions.
These homogenization-based models apply for general 3D loading conditions and constitute valuable mathematical tools in a number of problems of great technological significance, including the study and optimization of the properties of composite materials, the characterization of their homogenized constitutive behavior in the context of structural application analyses and the determination of the onset of material instabilities and failure. The latter phenomena are manifested at the macroscopic level as a result of the competition or synergy among softening and/or hardening effects developed gradually at the microscopic level due to the evolution of the microstructure.
2010 Ph.D. in Mechanical Engineering and Applied Mechanics, University of Pennsylvania, USA
2010 M.Sc. in Mechanical Engineering and Applied Mechanics, University of Pennsylvania, USA
2005 Diploma in Mechanical Engineering, University of Thessaly, GREECE
- Spyrou, L.A., Agoras, M. and Danas, K., 2017. A homogenization model of the Voigt type for skeletal muscle. Journal of Theoretical Biology 414, 50–61.
- Agoras, M., Avazmohammadi, R. and Ponte Castañeda, P., 2016. Incremental variational procedure for elasto-viscoplastic composites and application to polymerand metal-matrix composites reinforced by spheroidal elastic particles. International Journal of Solids and Structures 97–98, 668–686.
- Song D., Agoras, M. and Ponte Castañeda, P., 2015. The evolution of pore shape and orientation in plastically deforming metals: Implications for macroscopic response and shear localization. Mechanics of Materials 90, 47–68.
- Agoras, M. and Ponte Castañeda, P., 2014. Anisotropic finite-strain models for porous viscoplastic materials with microstructure evolution. International Journal of Solids and Structures 51–5, 981–1002.
- Agoras, M. and Ponte Castañeda, P., 2013. Iterated linear comparison bounds for viscoplastic porous materials with ellipsoidal microstructures. Journal of the Mechanics and Physics of Solids 61, 701–725.
- Agoras, M. and Ponte Castañeda, P., 2012. Multi-scale homogenization-based modeling of semi-crystalline polymers. Philosophical Magazine 92–8, 925–958.
- Agoras, M. and Ponte Castañeda, P., 2011. Homogenization estimates for multiscale nonlinear composites. European Journal of Mechanics A/Solids 30, 828–843.
- Agoras, M., Lopez-Pamies, O. and Ponte Castañeda, P., 2009. Onset of macroscopic instabilities in fiber-reinforced elastomers at finite strain. Journal of the Mechanics and Physics of Solids 57, 1828–1850.
- Agoras, M., Lopez-Pamies, O. and Ponte Castañeda, P., 2009. A general hyperelastic model for incompressible fiber-reinforced elastomers. Journal of the Mechanics and Physics of Solids 57, 268–286.
- Papatriantafillou, I., Agoras, M., Aravas, N. and Haidemenopoulos, G., 2006. Constitutive modeling and finite element methods for TRIP steels. Computer Methods in Applied Mechanics and Engineering 195, 5094–5114.