Biaxial Yield Surface Investigation of Polymer-Matrix Composites

Ye, Junjie; Qiu, Yuanying; Zhai, Zhi; He, Zhengjia

doi:10.3390/s130404051

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…Metal material yield and subsequent yield have been the focus of many scholars’ studies [ 1 , 2 , 3 ]. The subsequent yield surface is used not only to describe the limit of the elastic deformation of a material, but also to determine the spatial direction of plastic deformation (the normal flow rule).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Subsequent Yield Surface of Pure Copper by Single-Sample and Multi-Sample Methods under Various Pre-Deformation

et al. 2018

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Using copper thin-walled tubular specimens, the subsequent yield surfaces under pre-tension, pre-torsion and pre-combined tension-torsion are measured, where the single-sample and multi-sample methods are applied respectively to determine the yield stresses at specified offset strain. The rule and characteristics of the evolution of the subsequent yield surface are investigated. Under the conditions of different pre-strains, the influence of test point number, test sequence and specified offset strain on the measurement of subsequent yield surface and the concave phenomenon for measured yield surface are studied. Moreover, the feasibility and validity of the two methods are compared. The main conclusions are drawn as follows: (1) For the single or multi-sample method, the measured subsequent yield surfaces are remarkably different from cylindrical yield surfaces proposed by the classical plasticity theory; (2) there are apparent differences between the test results from the two kinds of methods: the multi-sample method is not influenced by the number of test points, test order and the cumulative effect of residual plastic strain resulting from the other test point, while those are very influential in the single-sample method; and (3) the measured subsequent yield surface may appear concave, which can be transformed to convex for single-sample method by changing the test sequence. However, for the multiple-sample method, the concave phenomenon will disappear when a larger offset strain is specified.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Subsequent Yield Surface of Pure Copper by Single-Sample and Multi-Sample Methods under Various Pre-Deformation

et al. 2018

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“…In recent years, nonlinear behaviors of polymer-matrix composites have been studied by many investigators [1][2][3]. Raimondo [1] proposed a phenomenological-based approach for the three-dimensional modelling of strain rate induced material hardening in unidirectional fiber reinforced polymer-matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Investigation Stress-Strain Behaviors of Glass/Polymer Composites

Han

et al. 2013

AMR

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In this paper, a micromechanical model based on Generalized Method of Cells(GMC) for predicting stress-strain behaviors of polymer-matrix composites is presented. Improved Bodner-Partom viscoplastic model is incorporated into GMC to describe nonlinear mechanical behavior of composites. On this basis, strain rate and fiber volume fraction(FVF) influence on nonlinear behaviors of composites are discussed. The results show that strain rate influences on stress-strain behaviors of composites in inelastic region can be clearly discerned. Moreover, FVF tends to clearly increase stiffness behaviors of polymer-composites.

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The fatigue life study of polyphenylene sulfide composites filled with continuous glass fibers

Hong

Wang

et al. 2018

Mater. Res. Express

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Biaxial Yield Surface Investigation of Polymer-Matrix Composites

Cited by 4 publications

References 31 publications

Experimental Investigations on Subsequent Yield Surface of Pure Copper by Single-Sample and Multi-Sample Methods under Various Pre-Deformation

Experimental Investigations on Subsequent Yield Surface of Pure Copper by Single-Sample and Multi-Sample Methods under Various Pre-Deformation

Investigation Stress-Strain Behaviors of Glass/Polymer Composites

The fatigue life study of polyphenylene sulfide composites filled with continuous glass fibers

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