Analysis of nonlinear flexural behavior of thick composites with fiber waviness

H. J. Chun, S. W. Lee, I. M. Daniel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A finite element analysis model was developed to predict flexural behavior of thick composites with uniform, graded and localized fiber waviness. In the analyses, material and geometrical nonlinearities due to fiber waviness were incorporated into the model utilizing energy density and an incremental method. In the model, two kinds of geometrical nonlinearity were considered, one due to reorientation of fibers and the other due to difference of curvatures from one finite element to another during deformation. The finite element analyses utilize the iterative mapping method to incorporate these geometrical nonlinear factors. The model was used to predict not only the flexural behavior of a flat thick composite plate but also of a thick composite plate with initial curvature. Flat composite specimens with various degrees of fiber waviness were fabricated and four-point flexural tests were conducted. The predicted nonlinear behavior by the current model was compared with results from the thin slice model and experiments. Good agreement was observed among them.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
PublisherASME
Pages9-20
Number of pages12
ISBN (Print)0791816524
Publication statusPublished - 1999 Dec 1
EventThick Composites for Load Bearing Structures - 1999 (The ASME International Mechanical Engineering Congress and Exposition) - Nashville, TN, USA
Duration: 1999 Nov 141999 Nov 19

Publication series

NameAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume235
ISSN (Print)0160-8835

Other

OtherThick Composites for Load Bearing Structures - 1999 (The ASME International Mechanical Engineering Congress and Exposition)
CityNashville, TN, USA
Period99/11/1499/11/19

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Chun, H. J., Lee, S. W., & Daniel, I. M. (1999). Analysis of nonlinear flexural behavior of thick composites with fiber waviness. In American Society of Mechanical Engineers, Applied Mechanics Division, AMD (pp. 9-20). (American Society of Mechanical Engineers, Applied Mechanics Division, AMD; Vol. 235). ASME.