Micromechanical modeling of plain woven polymer composites via 3D finite‐volume homogenization

Chen, Qiang; Chen, Xuefeng; Yang, Zhibo; Zhai, Zhi; Gao, Jiajia

doi:10.1002/pc.24305

Cited by 9 publications

(7 citation statements)

References 29 publications

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“…bT ij c s and bT ij c c are the coordinate transformation matrices and defined by Equations (11) and (12). [32,33] where the direction cosines are expressed as: The homogenization method was used to calculate the stiffness of RVE by summing the stiffness of sub-cells. , ð11Þ , ð12Þ…”

Section: The Constitutive Model Of the Composite Springmentioning

confidence: 99%

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

et al. 2020

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The helical spring is an essential mechanical component of automobile and machinery and has been widely used in industrial application. The weight reduction is the requirement of current material design and also the research trend for material development. In this study, a novel composite helical spring with "skin-core" structure was designed and fabricated with an integrated formation process based on the vacuum-assisted resin infusion technology. Based on the different function of skin and core, the skin structure was weft knitting tube made of aramid and ultra-high molecular weight polyethylene fiber, and the core structure was unidirectional carbon fiber. By selecting material for knitting tube and adjusting the volume content of carbon fiber core, the static and fatigue compression properties of composite helical spring were investigated. It has been found that the spring torsion and bending performance can be improved by wrapping the core with the knitting tube as the spring wire. Moreover, the finite element method was applied to further analyze the stress evolution of the "skin-core" composite helical spring during compression and fatigue. The results of compression test and simulation show that the spring stiffness can be effectively improved by using knitting tube and increasing the content of carbon fiber. The stress of the spring cross section is concentrated in the internal radial region of 180 , and the distribution of the corresponding cross sections is relatively uniform. The "skin-core" structure with aramid knitting tube as the outer skin and carbon fiber as the spring core significantly improves the load-carrying capacity and stability of the composite spring. The proposed lightweight helical composite could provide a replacement strategy of existing metal or unidirectional filament reinforced springs used in the engineering applications.

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Section: The Constitutive Model Of the Composite Springmentioning

confidence: 99%

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

et al. 2020

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“…Substituting Equations (19)- (22) into Equation 18and rearranging the result as factors of δu, δϕ, and δw, we have,…”

Section: Macroscale Problemmentioning

confidence: 99%

“…They studied the effects of the thickness of the interphase layer on the equivalent properties of polymer nanocomposites. In addition to computational homogenization‐based multiscale methods, analytical micromechanical methods are also employed to study overall behavior of the nanocomposites 22,26,27 . Yu et al 28 used the micromechanical Mori‐Tanaka method to obtain the effective mechanical properties of nano‐fiber reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

“…Multiscale methods are also employed by a number of researchers to obtain the mechanical properties of nanocomposites. 22,23 Ghanbari and Naghdabadi 24,25 presented a hierarchical multiscale scheme for nonlinear behavior of nanocomposites based on computational homogenization. They studied the effects of the thickness of the interphase layer on the equivalent properties of polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to computational homogenization-based multiscale methods, analytical micromechanical methods are also employed to study overall behavior of the nanocomposites. 22,26,27 Yu et al 28 used the micromechanical Mori-Tanaka method to obtain the effective mechanical properties of nano-fiber reinforced composites. The homogenization is performed numerically using finite element calculations.…”

Section: Introductionmentioning

confidence: 99%

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An analytical micromechanics‐based multiscale model for the analysis of functionally graded nanocomposites

Ghanbari

Rashidi

2020

Polymer Composites

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An analytical multiscale model is presented in this article for the analysis of functionally graded nanocomposites. The multiscale scheme is composed of a microscale problem whose solution provides the constitutive model for the macroscale problem. For nanoparticle‐reinforced composites, the microscale problem consists of three phases, namely the nanoparticle, the matrix, and an interphase layer between the matrix and the nanoparticle. An analytical micromechanical model based on Green's function is employed to solve the triple‐phase microscale problem. The homogenized properties of the FG nanocomposite are determined by the micromechanical problem and used in the macroscale level, at every macroscopic material point in which the constitutive model is required. As an example, a nanocomposite beam under bending is considered as the macroscale problem which is investigated by classical, first‐order, and third‐order shear deformation theories. The results obtained from the presented method are compared with the relevant data for similar problems using various higher‐order elasticity theories. By comparing the results of higher‐order theories and those obtained by the presented multiscale method, the internal length parameter of the higher‐order theories is correlated to the volume fraction of the interphase layer between the nanoparticle and the matrix.

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Local Stress Distributions in Fiber-Reinforced Composites with Consideration of Thermal Stresses During the Curing Process

Zhang

2021

Mech Compos Mater

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Micromechanical modeling of plain woven polymer composites via 3D finite‐volume homogenization

Cited by 9 publications

References 29 publications

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

An analytical micromechanics‐based multiscale model for the analysis of functionally graded nanocomposites

Local Stress Distributions in Fiber-Reinforced Composites with Consideration of Thermal Stresses During the Curing Process

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