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Residual stresses formation during the manufacturing process of epoxy matrix composites: resin yield stress and anisotropic chemical shrinkage

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Abstract

A study of residual stresses during the curing process of thermosetting resin composites is presented. A methodology is proposed for predicting the formation and the development of the manufacturing residual stresses, this approach is based on the determination of the resin yield stress. A self-consistent model is used to determine the cure-dependent effective mechanical properties, thermal expansion and chemical shrinkage coefficients of the composite material. This model allows considering for the composite material behaviour an anisotropic chemical shrinkage, which is not represented by a classical linear model. Finally, a one dimensional cure simulation and a modelling of residual stresses formation in composite plate are made by using a finite elements code. The effects of the cure-dependent material properties and of the resin yield stress on the residual stress formation are studied.

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Authors and Affiliations

  1. GeM, UMR CNRS 6183, Centrale Nantes - Université de Nantes, Nantes, France

    Youssef Abou Msallem, Frédéric Jacquemin & Arnaud Poitou

Authors
  1. Youssef Abou Msallem
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  2. Frédéric Jacquemin
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  3. Arnaud Poitou
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Correspondence to Frédéric Jacquemin.

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Msallem, Y.A., Jacquemin, F. & Poitou, A. Residual stresses formation during the manufacturing process of epoxy matrix composites: resin yield stress and anisotropic chemical shrinkage. Int J Mater Form 3 (Suppl 2), 1363–1372 (2010). https://doi.org/10.1007/s12289-010-0688-1

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  • DOI: https://doi.org/10.1007/s12289-010-0688-1

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