Constitutive Relations of a Cracked Composite Lamina

Nuismer, R. J.; Tan, Seng C.

doi:10.1177/002199838802200401

Cited by 196 publications

(95 citation statements)

References 11 publications

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“…Energy-based analyses of the multifracture behavior of laminated polymeric composites, when progressive failure occurs at the ply level, were developed by Fang, Schapery, and Weitsman (1986) and by Nuismer and Tan (1988). The latter work employs concepts of shearlag.…”

Section: Strain (Dt)mentioning

confidence: 99%

Multi-fracture of ceramic composites

Weitsman

Zhu

1993

Journal of the Mechanics and Physics of Solids

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Section: Strain (Dt)mentioning

confidence: 99%

Multi-fracture of ceramic composites

Weitsman

Zhu

1993

Journal of the Mechanics and Physics of Solids

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“…The micromechanical model proposed by Tan and Nuismer [17,18] accounts for the effects of the adjoining plies on the homogenized elastic properties of a cracked ply. This micromechanical model is the basis of the developments presented in this work.…”

Section: Micromechanical Modelmentioning

confidence: 99%

“…Using the assumption of generalized plane strain, Tan and Nuismer [17,18] developed a model able to relate the density of transverse matrix cracks in a central 90 o ply to the homogenized elastic properties of that ply. The model developed by Tan and Nuismer was used for the prediction of the evolution of transverse matrix cracks under either in-plane shear or transverse tensile stresses.…”

Section: Micromechanical Modelmentioning

confidence: 99%

“…For a given state of strain at time t, the multiaxial strain ratio is a dependent variable that can be easily defined using equation (17) in material coordinates:…”

Section: Damage Evolution Functionsmentioning

confidence: 99%

“…Alternative methods based on the combination of elastic analysis of cracked plies and finite Fracture Mechanics provide the basis for an accurate representation of the response of composite materials [17]- [28]. Micromechanical models have been developed to predict the initiation and evolution of transverse matrix cracks under either in-plane shear or transverse tension.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Micromechanics-Based Damage Model for the Strength Prediction of Composite Laminates

Camanho¹,

Mayugo

Maimí

et al.

III European Conference on Computational Mechanics

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The prediction of the failure of composite laminates subjected to multi-axial loading in regions with mild stress gradients is of considerable interest for some aerospace applications such as pressurized vessels. In such components, which are devoid of notches or other stress concentrations, matrix cracks can accumulate prior to the localization of damage along a narrow fracture path.The prediction of the onset of ply damage can be accomplished by using ply-level failure criteria [1]- [2]. To predict ultimate failure of a laminate the 'ply-discount' method is normally used. The ply discount method reduces by an empirical amount the elastic properties of a damaged ply as a function of the type of damage predicted. Such an approach is not rigorous for the simulation of the progressive accumulation of transverse matrix cracks.The main objective of the current work is to develop an alternative method to predict the onset of ply damage and ultimate failure of a laminate. The failure criteria used to predict damage onset are the LaRC03 failure criteria [2].A micromechanical model of a laminate containing matrix transverse cracks under multi-axial loading is proposed ( Figure 1). The model proposed can predict the increased strength of a ply when it is embedded in a multidirectional laminate [3], and it relates the multi-axial strain state to the density of transverse matrix cracks.Based on the micromechanical analyses, a new model is formulated in the framework of damage mechanics. The characteristics of the constitutive model, e.g. the free energy, the damage evolution functions and the loading-unloading conditions are based on the micromechanical model. [

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Effect of matrix cracking on stiffness of composite laminates

Tao¹,

Sun²

1996

Mech. Compos. Mater. Struct.

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Constitutive Relations of a Cracked Composite Lamina

Cited by 196 publications

References 11 publications

Multi-fracture of ceramic composites

Multi-fracture of ceramic composites

A Micromechanics-Based Damage Model for the Strength Prediction of Composite Laminates

Effect of matrix cracking on stiffness of composite laminates

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