Stress transfer analysis of unidirectional composites with randomly distributed fibers using finite element method

Yu, Yong; Zhang, Boming; Tang, Zhanwen; Qi, Guocheng

doi:10.1016/j.compositesb.2014.09.035

Cited by 25 publications

(10 citation statements)

References 22 publications

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“…It should be noted that this study does not consider the heterogeneity of cylindrical pad material. In this way, we can get the macro material properties (equivalent elastic modulus * E and equivalent Poisson's ratio *  ) that consider the effect of microscopic inclusions [56][57][58][59]. Here, we just consider the elastic material response, because for all specimens with inclusions, von-Mises stress is always below the yield limit under such loading conditions.…”

Section: Finite Element Model and Validationmentioning

confidence: 99%

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Deng

Bhatti

Yin

et al. 2018

Metals

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The analysis of fretting fatigue plays an important role in many engineering fields. The presence of heterogeneity may affect the performance of a machine or a structure, including its lifetime and stability. In this paper, the effect of randomly distributed micro inclusions on the fretting fatigue behaviour of heterogeneous materials is analysed using the finite element method (FEM) for different sizes, shape and properties of inclusions. The effect of micro inclusions on macroscopic material properties is also considered by representative volume element (RVE). It is shown that the influence of micro inclusions on macroscopic material properties cannot be ignored, and the shape and size of the inclusions have less effect on the macroscopic material properties as compared to the material properties of inclusion and volume ratio. In addition, various parameters of inclusions have little effect on the peak tensile stress, which remains almost the same as homogeneous material. Peak shear stress occurs at many places inside the specimen, which can result in multiple cracking points inside the specimen, as well as at the contact surface. Moreover, the stress band formed by the stress coupling between adjacent inclusions may have an important influence on the direction of crack growth.

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Section: Finite Element Model and Validationmentioning

confidence: 99%

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Deng

Bhatti

Yin

et al. 2018

Metals

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“…For each type, approximately 100 random microstructural models were constructed with DIGIMAT ® software (Fig. 4a) [29,30,31]. Every nanoparticle radius followed a beta distribution (mean: 7.54 Å, standard deviation: 2.44 Å).…”

Section: Numerical Algorithm For Statistical Multiscale Bridgingmentioning

confidence: 99%

Statistical multiscale homogenization approach for analyzing polymer nanocomposites that include model inherent uncertainties of molecular dynamics simulations

Shin

Chang

Yang

et al. 2016

Composites Part B: Engineering

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“…Regarding unidirectional composites, the majority of the published work focuses on the estimation of effective elastic constants, 1,2 some also on the initiation and evolution of damage. 3,4 Besides using idealized hexagonal or square fiber arrangement, Trias et al., 3 Yu et al., 4 Wongsto and Li, 5 and Melro et al. 6 used RVE featuring statistical fiber arrangement, so called SRVE.…”

Section: Introductionmentioning

confidence: 99%

Virtual characterization and macroscopic material modeling of a carbon fiber-reinforced PA6 UD composite

Roesner

Kärger

Henning

2016

Journal of Composite Materials

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Despite the increasing use of continuously fiber-reinforced composites with thermoplastic matrices in load-bearing structural applications, published research on their deformation behavior in general and their long-term behavior in particular is very limited. As a result, adequate material models to describe their time- and direction-dependent behavior on a macroscopic scale are lagging. The present study uses micromechanical representative volume element models and numerical homogenization techniques to analyze the material behavior of a carbon fiber-reinforced PA6 material as a function of load direction and time. The matrix is modeled as viscoelastic–viscoplastic. Based on the results of the representative volume element model, a homogenized macroscopic modeling approach is proposed. It is shown that the time dependency of the unidirectional composite is highly anisotropic. Plastic deformation occurs in the matrix, but may be neglected in the homogenized composite at laminate-relevant strain levels. The proposed homogenized orthotropic, nonlinear viscoelastic material model adequately captures the behavior of the heterogeneous unidirectional composite.

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Stress transfer analysis of unidirectional composites with randomly distributed fibers using finite element method

Cited by 25 publications

References 22 publications

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Numerical Modeling of the Effect of Randomly Distributed Inclusions on Fretting Fatigue-Induced Stress in Metals

Statistical multiscale homogenization approach for analyzing polymer nanocomposites that include model inherent uncertainties of molecular dynamics simulations

Virtual characterization and macroscopic material modeling of a carbon fiber-reinforced PA6 UD composite

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