Micromechanics modeling of magneto-sensitive polymeric materials during curing
This work proposes a coupled magneto-mechanical multi-scale model for simulating the curing process of magneto-sensitive polymers. In this type of composites, ferromagnetic particles are mixed with a liquid polymeric matrix in the uncured stage. The polymer curing process is a complex mechanism that transforms a fluid to a solid with time. In order to identify the overall response of the magneto-mechanically coupled polymeric composite, an extended Mori-Tanaka semi-analytical homogenization procedure is utilized that tranfers information from the micro to the macroscale. The stiffness gaining phenomenon as in the case of a curing process is realized by time-dependent material parameters appearing within the polymer piezomagnetic material tensors. Moreover, the volume reduction during curing is taken into account through a magnetic induction dependent shrinkage model. Several numerical examples illustrate the model capability to capture major observable phenomena in the curing process of polymeric composites under infinitesimal deformations and magnetic field.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
MOKARRAM, Hossain; CHATZIGEORGIOU, George; MERAGHNI, Fodil; STEINMANN, Paul (Elsevier, 2015)polymers. In the case of magneto-sensitive polymers, micron-size ferromagnetic particles are mixed with a liquid polymeric matrix in the uncured stage. The polymer curing process is a complex process that transforms a fluid ...
FIROOZ, Soheil; SAEB, Saba; CHATZIGEORGIOU, George; MERAGHNI, Fodil; STEINMANN, Paul; JAVILI, Ali (SAGE Publications, 2019)Although both computational and analytical homogenization are well-established today, a thorough and systematic study to compare them is missing in the literature. This manuscript aims to provide an exhaustive comparison ...
CHATZIGEORGIOU, George; JAVILI, Ali; STEINMANN, Paul (Taylor&Francis, 2015)In this work we propose a micromechanics model, based on the composite spheres assemblage method, for studying the electrostatic behaviour of particle and porous composites when the interface between the particle (or the ...
Size Effects in a Silica-Polystyrene Nanocomposite: Molecular Dynamics and Surface-enhanced Continuum Approaches DAVYDOV, Denis; VOYIATZIS, Evangelos; CHATZIGEORGIOU, George; LIU, Shengyuan; STEINMANN, Paul; BOHM, Michael C.; MULLER-PLATHE, Florian (TAYLOR & FRANCIS, 2014)Size effects in a system composed of a polymer matrix with a single silica nanoparticle are studied using molecular dynamics and surface-enhanced continuum approaches. The dependence of the composite’s mechanical properties ...
JAVILI, Ali; CHATZIGEORGIOU, George; MCBRIDE, Andrew T.; STEINMANN, Paul; LINDER, Christian (Wiley, 2015)The objective of this contribution is to establish a first-order computational homogenization framework for micro-to-macro transitions of porous media that accounts for the size effects through the consideration of surface ...