Hysteresis loop model of unidirectional carbon fiber-reinforced ceramic matrix composites under an arbitrary cyclic load

Gao, Xiguang; Fang, Guangwu; Song, Yang

doi:10.1016/j.compositesb.2013.08.063

Cited by 28 publications

(6 citation statements)

References 16 publications

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“…Based on the comprehensive analysis, it is found that there are two main energy-consuming methods for fluid damping: One is the gap flow, which achieves the energy consumption by the viscous friction generated when the fluid flows through the gap, that is F = cV ,where α is an index between 0 and 1, when the fluid is Newtonian fluid,α = 1. The other is to achieve energy consumption by the pressure difference formed by the small orifice throttling on the piston, F = cV n , where n is dependent upon the velocity of flow, when the velocity of flow is low, that is approximately linear viscous damping, n = 1, when it is too high, it presents the squared characteristic, n = 2 [20].…”

Section: Damping Mechanism In Fluid Damping Isolatorsmentioning

confidence: 99%

Improvement of high damping structures using a photosensitive resin filled with viscous fluid

Zhang

2020

J Braz. Soc. Mech. Sci. Eng.

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In order to improve the damping characteristics of a photosensitive resin structure filled with viscous fluid, two improved structures with grooves and holes are investigated. Numerical simulation models of photosensitive resin damping structures are established using the finite element method. The force-displacement curves at low frequency are obtained by calculations. Then the structure with the best damping characteristics is chosen to be analyzed. The pressure and stress contours of the solid area and the fluid area are obtained. At the same time, the force-displacement curves of the improved structural part at different frequencies were obtained. It can be seen by calculation that the damping output was improved significantly. Then the influence of the structural parameters and the number and radius of the damping holes, on the damping output, was analyzed. The research has good reference values for the design and optimization of high stiffness and high damping elements and the application of fluid damping parts in reducing vibration and designing vibration isolation device.

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Section: Damping Mechanism In Fluid Damping Isolatorsmentioning

confidence: 99%

Improvement of high damping structures using a photosensitive resin filled with viscous fluid

Zhang

2020

J Braz. Soc. Mech. Sci. Eng.

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“…Silicon–carbon–fiber‐reinforced silicon carbide matrix composites (SiC f /SiC) are regarded as one of the most promising materials for aircraft hot section components due to their excellent mechanical properties in high‐temperature environments 1–9 . When assembling complex high‐temperature section components, ceramic–matrix composites (CMCs) joints with high mechanical properties are used to ensure the structural strength of the joint 10,11 .…”

Section: Introductionmentioning

confidence: 99%

“…Silicon-carbon-fiber-reinforced silicon carbide matrix composites (SiC f /SiC) are regarded as one of the most promising materials for aircraft hot section components due to their excellent mechanical properties in hightemperature environments. [1][2][3][4][5][6][7][8][9] When assembling complex high-temperature section components, ceramic-matrix composites (CMCs) joints with high mechanical properties are used to ensure the structural strength of the joint. 10,11 The 2D CMCs z-pinned joint is a mechanical joint with excellent performance, which could be widely used in the connection of complex aircraft thermal sections in the future.…”

Section: Introductionmentioning

confidence: 99%

Shear failure evolution and its dispersion of plain woven ceramic matrix composites z‐pin structure

Shi³

et al. 2022

Int J Applied Ceramic Tech

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In this paper, the digital image correlation technique was applied to the shear test of 2D SiC/SiC composites z-pin with the purpose of analyzing the shear behavior of the plain woven pin and studying the structure factors of test results dispersion. After obtaining the strain-stress curves of the joint's connection region, the evolution of z-pin shear failure process was investigated. The z-pin's failure fractures were observed, and the main factors of its dispersion of shear mechanical properties were discussed. Changing the yarn parameter of model building and importing into Workbench for calculation, the average stress results in the shear plane were obtained. Different simulation results show that optimization of plain-woven pin structure parameters can effectively improve its shear strength.

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“…Barriers to their successful application include the lack of knowledge of in situ damages of their constituent phases and the correlation of these damages to the final failure of the entire composites. Understanding the damage mechanism in the interphase between the fiber and matrix is one of the most important issues [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Micromechanical finite element analysis of effect of multilayer interphase on crack propagation in SiC/SiC composites

Fang

Sun

Gao

et al. 2021

Modelling Simul. Mater. Sci. Eng.

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The current study presents a micromechanical methodology to analyze the cracking behavior of a SiC/SiC composite with multilayer interphase using finite element method. To capture the constituent level damage initiation and propagation within the multilayer interphase, an axisymmetric unit-cell model was developed by discreetly modeling the fiber, the matrix, and the sublayers of interphase. Moreover, the cracking inside the interphase and debonding at the interfaces between different constituents were taken into account. The extended finite element method (XFEM) was applied to model the cracking inside the interphase and matrix. The cohesive surface approach was employed to describe the debonding behavior at all the interfaces. Adopting the proposed numerical approach, detailed local stress state and cracking behavior of SiC/SiC composites with multilayer interphase were analyzed. The results show that the multilayer interphase has a significant effect on the cracking behavior. Moreover, the growth length of secondary cracks had been demonstrated to be a useful parameter that is capable of connecting composites level behaviors and constituent level damages. From the various numerical methods used, the finite element simulation in conjunction with the XFEM and the cohesive surface approach is a precise and consistent way to analyze the crack propagation and prediction of failure for composites with multilayer interphase. The research provides a fundamental method for promoting the interphase design of SiC/SiC composites.

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Hysteresis loop model of unidirectional carbon fiber-reinforced ceramic matrix composites under an arbitrary cyclic load

Cited by 28 publications

References 16 publications

Improvement of high damping structures using a photosensitive resin filled with viscous fluid

Improvement of high damping structures using a photosensitive resin filled with viscous fluid

Shear failure evolution and its dispersion of plain woven ceramic matrix composites z‐pin structure

Micromechanical finite element analysis of effect of multilayer interphase on crack propagation in SiC/SiC composites

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