Abstract
Internal stresses in multiphase materials fluctuate because of differential thermoelastic and plastic properties of components. Due to the random microstructure of most multiphase materials, the internal stresses become random quantities, too. We present a direct statistical method which describes the internal fields (stress, elastic strain, thermal strain, plastic strain) by probability distributions which are derived using a maximum entropy formalism. One obtains Gaussian distributions where mean value, spread, and correlation depend on easily accessible quantities (volume fractions, phase properties). The theory is applied to two-phase composites, and the results are compared with some experimental observations.
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© 1996 Kluwer Academic Publishers
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Kreher, W.S. (1996). Statistical Theory of Microplasticity of Two-Phase Composites. In: Pineau, A., Zaoui, A. (eds) IUTAM Symposium on Micromechanics of Plasticity and Damage of Multiphase Materials. Solid Mechanics and its Applications, vol 46. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1756-9_45
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DOI: https://doi.org/10.1007/978-94-009-1756-9_45
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7285-4
Online ISBN: 978-94-009-1756-9
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