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failure models and criteria for frp under in-plane or three-dimensional stress states including shear non-linearityA set of three-dimensional failure criteria for laminated fiber-reinforced composites, denoted LaRC04, is proposed. The criteria are based on physical models for each failure mode and take into consideration non-linear matrix shear behaviour. The model for matrix compressive failure is based on the Mohr-Coulomb criterion and it predicts the fracture angle. Fiber kinking is triggered by an initial fiber misalignment angle and by the rotation of the fibers during compressive loading. The plane of fiber kinking is predicted by the model. LaRC04 consists of 6 expressions that can be used directly for design purposes. Several applications involving a broad range of load combinations are presented and compared to experimental data and other existing criteria. Predictions using LaRC04 correlate well with the experimental data, arguably better than most existing criteria. The good correlation seems to be attributable to the physical soundness of the underlying failure models.
Document ID
20050110223
Document Type
Technical Memorandum (TM)
Authors
Pinho, Silvestre T.
(Imperial Coll. of Science, Technology and Medicine London, United Kingdom)
Davila, C. G.
(NASA Langley Research Center Hampton, VA, United States)
Camanho, P. P.
(Porto Univ. Portugal)
Iannucci, L.
(Imperial Coll. of Science, Technology and Medicine London, United Kingdom)
Robinson, P.
(Imperial Coll. of Science, Technology and Medicine London, United Kingdom)
Date Acquired
September 7, 2013
Publication Date
February 1, 2005
Subject Category
Composite Materials
Report/Patent Number
NASA/TM-2005-213530
L-19089
Funding Number(s)
WORK_UNIT: WU 23-064-30-22
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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