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The Representation of Fiber Misalignment Distributions in Numerical Modeling of Compressive Failure of Fiber Reinforced Polymers

  • N. SafdarEmail author
  • B. Daum
  • R. Rolfes
  • O. Allix
Chapter
  • 39 Downloads
Part of the Lecture Notes in Applied and Computational Mechanics book series (LNACM, volume 93)

Abstract

This chapter introduces a methodology to implement systematically spatially varying fiber misalignment distribution characterized experimentally into numerical modeling for failure surface analyses under in-plane loading conditions in compressive domain. If stochastically characterized spectral density of fiber misalignment by performing averaging over measured data as an ensemble is available, the approach allows designers to enhance the efficient usage of Fiber Reinforced Polymers (FRPs) by utilizing maximum capacity of the material with calculable reliability. In the present work, Fourier transform algorithms generally used in signal processing theory, are employed to generate representative distributions of fiber misalignments. The generated distributions are then mapped onto a numerical model as fluctuations of the material orientations. Through Monte Carlo analyses, probability distribution of peak stresses are subsequently calculated. This information is then used to define a probabilistic failure surface.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Institute of Structural AnalysisLeibniz University HannoverHannoverGermany
  2. 2.ENS Paris-SaclayCachanFrance

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