Mechanics of Time-Dependent Materials

, Volume 18, Issue 4, pp 643–662

Static compressive strength prediction of open-hole structure based on non-linear shear behavior and micro-mechanics

Authors

  • Wangnan Li
    • State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong University
    • State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong University
  • Chao Li
    • State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong University
Article

DOI: 10.1007/s11043-012-9206-9

Cite this article as:
Li, W., Cai, H. & Li, C. Mech Time-Depend Mater (2014) 18: 643. doi:10.1007/s11043-012-9206-9

Abstract

This paper deals with the characterization of the strength of the constituents of carbon fiber reinforced plastic laminate (CFRP), and a prediction of the static compressive strength of open-hole structure of polymer composites. The approach combined with non-linear analysis in macro-level and a linear elastic micromechanical failure analysis in microlevel (non-linear MMF) is proposed to improve the prediction accuracy. A face-centered cubic micromechanics model is constructed to analyze the stresses in fiber and matrix in microlevel. Non-interactive failure criteria are proposed to characterize the strength of fiber and matrix. The non-linear shear behavior of the laminate is studied experimentally, and a novel approach of cubic spline interpolation is used to capture significant non-linear shear behavior of laminate. The user-defined material subroutine UMAT for the non-linear share behavior is developed and combined in the mechanics analysis in the macro-level using the Abaqus Python codes. The failure mechanism and static strength of open-hole compressive (OHC) structure of polymer composites is studied based on non-linear MMF. The UTS50/E51 CFRP is used to demonstrate the application of theory of non-linear MMF.

Keywords

Micromechanics of failureConstituent-based strength characterizationUMATNon-linear analysis

Copyright information

© Springer Science+Business Media Dordrecht 2012