Deformation of a laminated composite with a physically nonlinear reinforcement and microdamageable matrix |
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Authors: | L P Khoroshun E N Shikula |
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Institution: | (1) S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Kiev |
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Abstract: | The structural theory of short-term microdamage is generalized to a laminated composite with a microdamageable matrix and
physically nonlinear reinforcement. The basis for the generalization is the stochastic elasticity equations of a laminated
composite with a porous matrix. Microvolumes in the matrix material meet the Huber-Mises failure criterion. The damaged-microvolume
balance equation for the matrix is derived. This equation and the equations relating macrostresses and macrostrains of a laminated
composite with porous matrix and physically nonlinear reinforcement constitute a closed-form system of equations. This system
describes the coupled processes of physically nonlinear deformation and microdamage occurring in different composite components.
Algorithms for computing the microdamage-macrostrain relationships and deformation diagrams are developed. Uniaxial tension
curves are plotted for a laminated composite with linearly hardening reinforcement
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Translated from Prikladnaya Mekhanika, Vol. 41, No. 11, pp. 47–56, November 2005. |
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Keywords: | laminated composite microdamageable matrix physically nonlinear reinforcement coupled process of physically nonlinear deformation microdamage |
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