Anisotropic strength of composites

Azzi, V. D.; Tsai, Stephen W.

doi:10.1007/bf02326292

Cited by 452 publications

(140 citation statements)

References 2 publications

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“…Figure 11 shows the strength values plotted as a function of angle, from longitudinal at 0 = 0° to transverse, at 6 =90°. The quadratic strength theory of Azzi and Tsai (1965) The coefficient, S s , is quantified using the tensile strength at 10° (Rodriguez, 1999). Figure 12 shows the effect of strain rate on the stress-strain response.…”

Section: Resultsmentioning

confidence: 99%

Solid Freeform Fabrication Proceedings

Bourell¹,

Beaman²

2001

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Section: Resultsmentioning

confidence: 99%

Solid Freeform Fabrication Proceedings

Bourell¹,

Beaman²

2001

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“…The first notable effort to describe failure of a homogenized unidirectional (UD) composite appeared in 1965 by Azzi & Tsai [1], which became known as the Tsai-Hill theory. Hill [2] in 1948 proposed a generalization of the yield criterion for isotropic metals to orthotropic metals by assuming six independent yield stresses: three for normal stresses in the three symmetry directions and three for shear stresses in the three planes of symmetry.…”

Section: Failure Theories For Homogenized Compositesmentioning

confidence: 99%

Physical modelling of failure in composites

Talreja

2016

Phil. Trans. R. Soc. A.

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Structural integrity of composite materials is governed by failure mechanisms that initiate at the scale of the microstructure. The local stress fields evolve with the progression of the failure mechanisms. Within the full span from initiation to criticality of the failure mechanisms, the governing length scales in a fibre-reinforced composite change from the fibre size to the characteristic fibre-architecture sizes, and eventually to a structural size, depending on the composite configuration and structural geometry as well as the imposed loading environment. Thus, a physical modelling of failure in composites must necessarily be of multi-scale nature, although not always with the same hierarchy for each failure mode. With this background, the paper examines the currently available main composite failure theories to assess their ability to capture the essential features of failure. A case is made for an alternative in the form of physical modelling and its skeleton is constructed based on physical observations and systematic analysis of the basic failure modes and associated stress fields and energy balances. This article is part of the themed issue ‘Multiscale modelling of the structural integrity of composite materials’.

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“…Furthermore, even slight variations in the alignment of the major fiber axis (♦ 7°) can change the load carrying capacity of the composite by as much as a factor of three [1,2]. Thus, for most practical applications, multidirectional composites are necessary, despite the fact that shifting part of the fibers away from the major stress axis decreases the theoretical efficiency of the composite.…”

Section: The Mechanical Performance Of Cross-plied Fiber Glass-epoxy mentioning

confidence: 99%

The Mechanical Performance of Cross-Plied Fiber Glass-Epoxy Composites

Ishai¹,

Lavengood²

1970

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Anisotropic strength of composites

Cited by 452 publications

References 2 publications

Solid Freeform Fabrication Proceedings

Solid Freeform Fabrication Proceedings

Physical modelling of failure in composites

The Mechanical Performance of Cross-Plied Fiber Glass-Epoxy Composites

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