Thermal cycling influences on compressive deformations of laminate composites

Ye, Junjie; Hong, Yang; Wang, Yongkun; Shi, Baoquan; Zhai, Zhi; Chen, Xuefeng

doi:10.1002/pc.25121

Cited by 7 publications

(6 citation statements)

References 38 publications

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“…It should be noted that the effectiveness of this method in predicting failure strength of composite structures, including lamina and laminates, has been verified by comparing with the experimental data [34,42]. In addition, the experimental test results of the compressive responses of AS4/3501-6 composites subjected to coupled thermo-mechanical loading [36] are also employed to validate the proposed method. In light of the aforementioned investigations, stiffness degradations and biaxial failure strength of the lamina are investigated in this study.…”

Section: Investigations On Biaxial Failure Strengthmentioning

confidence: 88%

“…where h and l are dimensions of the RVE. Detailed information of the modelling procedures and the equations can be found in Ye and Aboudi [36][37][38].…”

Section: Coupled Thermo-mechanical Modelling Of Continuous Fiber-reinforced Compositesmentioning

confidence: 99%

“…As a result, the coupling effect of the mechanical and thermal fields was considered in the solution. Ye et al [36] studied the effect of thermal cycling and compressive loadings on the deformations of composite laminates. From the aforementioned investigations, it was found that a lack of research on the biaxial failure strength and microscopic stress distributions of fiberreinforced composites subjected to varying thermal loadings is evident.…”

Section: Introductionmentioning

confidence: 99%

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Failure analysis of fiber-reinforced composites subjected to coupled thermo-mechanical loading

Wang

et al. 2020

Composite Structures

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Structures made of fiber reinforced composites have captured extensive attentions in the scientific and engineering communities due to their excellent performance and applicability. When these structures are in service, they are likely exposed to variations of ambient temperature that may have an impact on their strength. To study this effect, a coupled thermo-mechanical model is required. This paper develops a microscopic mechanical model to investigate failure of composite structures subjected to a coupled thermo-mechanical condition. Stiffness degradations of composite laminates are first investigated. A comparison between experimental data and theoretical results under the quasi-static loadings are presented to validate the proposed method. The method provides detailed microscopic stress distribution of the composites under the coupled thermo-mechanical loading for failure analysis, which shows that a higher ambient temperature variation will generally cause stiffness degradation and failure strength for both uniaxially and biaxially loaded laminates.

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Section: Investigations On Biaxial Failure Strengthmentioning

confidence: 88%

“…where h and l are dimensions of the RVE. Detailed information of the modelling procedures and the equations can be found in Ye and Aboudi [36][37][38].…”

Section: Coupled Thermo-mechanical Modelling Of Continuous Fiber-reinforced Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Failure analysis of fiber-reinforced composites subjected to coupled thermo-mechanical loading

Wang

et al. 2020

Composite Structures

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“…In addition, the continuity between adjacent sub-cell displacements and tractions was employed to solve the coupled thermo–mechanical equations. Detailed modelling procedures were reported by Aboudi and Ye [34,35]. Finally, the macroscopic average component, boldnormalY¯=[σ¯11 σ¯22 σ¯33 σ¯23 σ¯13 σ¯12 q1 q2 q3]T, can be expressed as a function of the macroscopic average strains, ε¯ijfalse(i,j=1,2,3false), and temperature gradients, Hifalse(i=1,2,3false), according to the homogenization theory, that is:boldnormalY¯=1hltrue∑β=1Nβtrue∑γ=1NγhβlγA...…”

Section: Theoretical Aspectsmentioning

confidence: 99%

Evaluate the Fatigue Life of CFRC Subjected to Coupled Thermo–Mechanical Loading

Shi

et al. 2019

Materials

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Mechanical properties of composites manufactured by high-temperature polymer polyether ether ketone (PEEK) with continuous reinforced fibers are closely dependent on ambient temperature variations. In order to effectively study fatigue failure behaviors of composites under the coupled thermo–mechanical loading, a well-established microscopic model based on a representative volume element (RVE) is proposed in this paper. Stiffness degradation behaviors of the composite laminates at room and elevated temperatures are firstly investigated, and their failure strengths are compared with experimental data. To describe the fatigue behaviors of composites with respect to complex external loading and ambient temperature variations, a new fatigue equation is proposed. A good consistency between theoretical results and experimental data was found in the cases. On this basis, the temperature cycling effects on the service life of composites are also discussed. Microscopic stress distributions of the RVE are also discussed to reveal their fatigue failure mechanisms.

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“…h  and l  are sub-cell dimensions in the 2 y and 3 y directions, respectively. To improve computational efficiency and accuracy, the GMC was further developed by other researchers [35][36]. By employing the sub-cell stresses as unknown variables, Pindera and Bednarcyk [37] improved calculation efficiency of the microscopic method.…”

Section: Microscopic Modeling Of the Rvementioning

confidence: 99%

Auto-generation methodology of complex-shaped coarse aggregate set of 3D concrete numerical test specimen

Qiu

2019

Construction and Building Materials

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Composite structures have been widely used in wind turbine equipment for their high stiffness to mass ratio and high strength. A major concern in the use of composite materials is their susceptibility to various micro damage, such as fiber breakage and matrix crack, which will lead to macroscopic structural fracture. In this paper, a multi-scale modeling strategy is proposed to investigate failure mechanisms and damage evolution of composite blades with initial defects from microscopic damage (including fiber fractures and matrix cracks) to macroscopic fracture. At the microscopic scale, an isoparametric micromechanical model is developed to calculate microscopic stresses and simulate microscopic damage. At the laminar scale, the classic laminate theory is employed to evaluate the laminate stiffness. At the structural scale, a reverse modeling technology is proposed to accurately acquire structural dimensions of a wind turbine blade, and a macroscopic 3D model is implemented into ANSYS/LS-DYNA software. By comparing with the experimental data, it is demonstrated that the proposed multi-scale method is suitable to predict mechanical properties of complex composite structures effectively.

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Thermal cycling influences on compressive deformations of laminate composites

Cited by 7 publications

References 38 publications

Failure analysis of fiber-reinforced composites subjected to coupled thermo-mechanical loading

Failure analysis of fiber-reinforced composites subjected to coupled thermo-mechanical loading

Evaluate the Fatigue Life of CFRC Subjected to Coupled Thermo–Mechanical Loading

Auto-generation methodology of complex-shaped coarse aggregate set of 3D concrete numerical test specimen

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