A micromechanics model for the prediction of static strength of off-axis unidirectional laminates

Subramanian, S.; Reifsnider, KL; Stinchcomb, WW

doi:10.1007/bf00567213

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…Finite element method (FEM) and analytical approaches are used for micromechanical modeling of two-phase composites and to obtain the effective properties of such materials. 1–21 These analytical methods and FEM could predict the overall behaviors of two-phase composites with reasonable accuracy. An analytical micromechanical model based on unit-cell method was presented 20 to predict the behavior of fiber-reinforced composites.…”

Section: Introductionmentioning

confidence: 89%

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Interphase effects on the thermo-mechanical properties of three-phase composites

Hassanzadeh-Aghdam

Mahmoodi

Ansari

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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A three-dimensional micromechanics-based analytical model is developed to investigate the influence of interphase on the thermo-mechanical properties of three-phase composites. The representative volume element (RVE) of composites is extended to c × r × h cells in three dimensions and the RVE consists of three phases including filler, matrix and interphase. The arrangement state of filler within the matrix materials is assumed to be random with uniform distribution. Fillers are surrounded by the interphase in the whole composite. The effects of interphase such as its thickness and stiffness on the thermo-mechanical properties of composite with various aspect ratios of filler are studied. The results illustrate that while the effects of interphase is significant for composites with randomly distributed spherical particles, it turns to be less effective as the aspect ratio of filler of composite increases. Moreover, the results demonstrate that the effect of interphase on the thermo-mechanical properties of fibrous composites in the transverse direction is more significant than that of fiber composites in the longitudinal direction.

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Section: Introductionmentioning

confidence: 89%

“…Substituting equation 4into (3) yields the following relations where E ijk and v ijk are Young's modulus and Poisson's ratio for sub-cell ijk, respectively. Using equation (5) in conjunction with equations (1) and (2), a system of cr Â ch Â rh linear equations with the same number of unknowns is obtained as…”

Section: Micromechanical Governing Equationsmentioning

confidence: 99%

Interphase effects on the thermo-mechanical properties of three-phase composites

Hassanzadeh-Aghdam

Mahmoodi

Ansari

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…Numerous micromechanical investigations into composite failures have been conducted [9][10][11][12][13][14]. However, most of these approaches were focused mainly on the nature of the local environment (i.e., the "weak links" of the system such as the fraction of unbroken fibers in the fiber bundle, fiber pull-out, interface debonding, etc.)…”

Section: Introductionmentioning

confidence: 99%

A Unified Micromechanical Model for the Mechanical Properties of Two Constituent Composite Materials. Part III: Strength Behavior

Huang

2001

Journal of Thermoplastic Composite Materials

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This series of papers reports a new, general, and unified micromechanical model for estimating the three-dimensional mechanical properties of a composite made from two constituent materials, i.e., continuous fiber and matrix. The linear elastic and elasto-plastic behaviors have been studied in Parts I and II respectively. The present paper investigates the tensile strength and failure mode of the composite. The tensile strength of the composite is predicted based on the ultimate stresses in the constituent phases, as the states of stresses in both phases are explicitly represented as the function of the applied overall stress field. The maximum normal stress theory for isotropic materials is incorporated with this prediction. As long as the maximum normal stress in either the fibers or the matrix attains its ultimate value, the composite is considered to fail, and the corresponding strength and failure mode are thus automatically defined. This makes determination of the composite strength as well as the failure mode extremely general, yet particularly easy. The composite can be subjected to any kind of load combination, whereas the corresponding strength behavior is determined through the same simple procedure. Comparisons between predicted and measured tensile strengths for several unidirectional composites under off-axial loads and for a plain weft-knitted fabric-reinforced composite under different uniaxial loads confirm that the present micromechanical strength theory is very efficient.

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A micromechanics model for the prediction of fatigue characteristics of off-axis unidirectional laminates

Subramanian¹,

Reifsnider²,

Stinchcomb³

1994

Appl Compos Mater

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A micromechanics model for the prediction of static strength of off-axis unidirectional laminates

Cited by 4 publications

References 4 publications

Interphase effects on the thermo-mechanical properties of three-phase composites

Interphase effects on the thermo-mechanical properties of three-phase composites

A Unified Micromechanical Model for the Mechanical Properties of Two Constituent Composite Materials. Part III: Strength Behavior

A micromechanics model for the prediction of fatigue characteristics of off-axis unidirectional laminates

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