Analysis of nonlinear flexural behavior of thick composites with fiber waviness

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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
出版社ASME
ページ9-20
ページ数12
ISBN(印刷版)0791816524
出版ステータスPublished - 1999 12 1
イベントThick Composites for Load Bearing Structures - 1999 (The ASME International Mechanical Engineering Congress and Exposition) - Nashville, TN, USA
継続期間: 1999 11 141999 11 19

出版物シリーズ

名前American Society of Mechanical Engineers, Applied Mechanics Division, AMD
235
ISSN(印刷版)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

ASJC Scopus subject areas

  • 機械工学

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