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    Fully coupled heat conduction and deformation analyses of nonlinear viscoelastic composites

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    Type
    Article
    Authors
    Khan, Kamran
    Muliana, Anastasia Hanifah
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Physical Science and Engineering (PSE) Division
    Date
    2012-05
    Permanent link to this record
    http://hdl.handle.net/10754/562166
    
    Metadata
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    Abstract
    This study presents an integrated micromechanical model-finite element framework for analyzing coupled heat conduction and deformations of particle-reinforced composite structures. A simplified micromechanical model consisting of four sub-cells, i.e., one particle and three matrix sub-cells is formulated to obtain the effective thermomechanical properties and micro-macro field variables due to coupled heat conduction and nonlinear thermoviscoelastic deformation of a particulate composite that takes into account the dissipation of energy from the viscoelastic constituents. A time integration algorithm for simultaneously solving the equations that govern heat conduction and thermoviscoelastic deformations of isotropic homogeneous materials is developed. The algorithm is then integrated to the proposed micromechanical model. A significant temperature generation due to the dissipation effect in the viscoelastic matrix was observed when the composite body is subjected to cyclic mechanical loadings. Heat conduction due to the dissipation of the energy cannot be ignored in predicting the factual temperature and deformation fields within the composite structure, subjected to cyclic loading for a long period. A higher creep resistant matrix material or adding elastic particles can lower the temperature generation. Our analyses suggest that using particulate composites and functionally graded materials can reduce the heat generation due to energy dissipation. © 2012 Elsevier Ltd.
    Citation
    Khan, K. A., & Muliana, A. H. (2012). Fully coupled heat conduction and deformation analyses of nonlinear viscoelastic composites. Composite Structures, 94(6), 2025–2037. doi:10.1016/j.compstruct.2012.01.010
    Sponsors
    This research is supported by the Air Force Office of Scientific Research (AFOSR) under Grant No. FA 9550-10-1-0002. We also thanks the Texas A&M Supercomputing Facility (http://sc.tamu.edu/) for providing computing resources useful in conducting the research reported in this paper.
    Publisher
    Elsevier BV
    Journal
    Composite Structures
    DOI
    10.1016/j.compstruct.2012.01.010
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.compstruct.2012.01.010
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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