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Viscoelastic incremental formulation using creep and relaxation differential approaches

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Abstract

A new incremental formulation in the time domain for linear, non-ageing viscoelastic materials undergoing mechanical deformation is presented in this work. The formulation is derived from linear differential equations based on a discrete spectrum representation for the creep and relaxation tensors. The incremental constitutive equations are then obtained by finite difference integration. Thus the difficulty of retaining the stress and strain history in computer solutions is avoided. A complete general formulation of linear viscoelastic stress analysis is developed in terms of increments of strains and stresses in order to establish the constitutive stress–strain relationship. The presented method is validated using numerical simulations and reliable results are obtained.

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Authors and Affiliations

  1. Heterogeneous Material Research Group, Civil Engineering and Durability Team, University of Limoges, 19300, Egletons, France

    Claude Chazal & Rostand Mouto Pitti

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  1. Claude Chazal
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  2. Rostand Mouto Pitti
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Correspondence to Claude Chazal.

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Chazal, C., Mouto Pitti, R. Viscoelastic incremental formulation using creep and relaxation differential approaches. Mech Time-Depend Mater 14, 173–190 (2010). https://doi.org/10.1007/s11043-009-9101-1

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  • DOI: https://doi.org/10.1007/s11043-009-9101-1

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