Viscous fluid–structure interaction response of composite hydrofoils

Liao, Yingqian; Garg, Nitin; Martins, Joaquim R. R. A.; Young, Yin Lu

doi:10.1016/j.compstruct.2019.01.043

Cited by 26 publications

(3 citation statements)

References 40 publications

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“…In automotive, aerospace, naval, and other fields, fiberreinforced polymer (FRP) composites are increasingly being used to replace traditional metals because of their excellent specific strength and specific stiffness. [1][2][3] However, due to the specific production process, bubbles might be generated in the matrix, which greatly reduces the reliability of FRP composites. [4][5][6] Although many researchers [7][8][9][10][11][12] have focused on process optimization, it is impossible to completely eliminate the void defects.…”

Section: Introductionmentioning

confidence: 99%

Multiscale simulation and theoretical prediction for the elastic properties of unidirectional fiber‐reinforced polymer containing random void defects

et al. 2021

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Polymer‐matrix composites are widely used in various industries due to their high specific strength and specific stiffness. However, the void formation is inevitable as a by‐product during manufacturing processes, which may have negative effects on its mechanical properties. The purposes of this paper are to quantitatively evaluate the influence of voids on the anisotropic elastic properties of composites and to provide corresponding theoretical prediction models. Firstly, three‐dimensional representative volume elements (RVE) of fiber‐reinforced composite materials with different fiber contents (36.37%, 45.47%, 50.92%) and different void contents (1%, 3%, 5%, 7%) are established. To obtain the elastic properties in different directions, various periodic boundary conditions are applied to the RVE models and corresponding subroutines are developed by ABAQUS‐PYTHON. Secondly, a series of theoretical models are proposed to quickly predict the anisotropic elastic properties of unidirectional fiber/epoxy composites containing random‐sized void defects, which agree well with the finite element simulation results. Especially, the proposed models have concise expressions, which require only a few parameters to be input, and hence they are convenient for engineering application. Both theoretical and numerical results show that void defects have an obvious influence on the transverse modulus, major Poisson's ratio, and the out‐of‐plane shear modulus. When the void volume reaches 7%, all of the properties mentioned above decrease by more than 10% for the FRPs studied.

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Section: Introductionmentioning

confidence: 99%

Multiscale simulation and theoretical prediction for the elastic properties of unidirectional fiber‐reinforced polymer containing random void defects

et al. 2021

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“…The FEM can be used to simulate structural response [166], elastic wave propagation [167], heat conduction [168], and large deformation and large displacement of slopes on a macro scale [169], but it is impossible to analyze the discontinuous surface or to simulate the progressive destruction process of materials [170]. The DEM-FEM coupling analysis method can simulate the machining process [171,172] and thermal damage [173,174] of intact brittle materials and brittle materials with discontinuous surfaces, and simulate the generation and propagation of cracks after using the relevant criteria of fracture mechanics [171].…”

Section: Dem-femmentioning

confidence: 99%

Discrete element modeling of the machining processes of brittle materials: recent development and future prospective

Jiang

Tang

et al. 2020

Int J Adv Manuf Technol

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In recent years, the discrete element method (DEM) has been used to model the bulk material, especially for the brittle materials (such as rocks, ceramics, concrete, ice, etc.) with various mechanical properties or responses by setting serials of contact properties (such as bonds) in the particle assembly. These bonds can withstand a certain amount of force and/or moment, so that the stresses executed in the bond can be used for determining the initiation and propagation of micro-crack. There are increasing evidences over the last twenty years that the DEM is becoming an effective numerical method to simulate the cracking, crushing and deformation of continuous media under external loads. The DEM has now been widely used in the field of processing and machining of rock, ceramic, concrete and other brittle materials. In this paper, the theoretical principles, formulations, contact models as well as the numerical solving processes of DEM are introduced. The applications of DEM for the machining processes of brittle and rigid materials such as ceramics are described and reviewed in detail, with future development trend also discussed.

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“…They have shown that the PAC can be used to control the lift response to hydrodynamic load in the case of a composite structure [18] mainly by decreasing the tip load. [25] numerically studied the influence of plies orientation on vibration and bend-twist coupling as well as the effect of anysotropy and sweep [27]. Experimental investigations were also carried out on the steady-state fluid-structure interactions of flexible composite hydrofoils ( [46], [32]).…”

Section: Introductionmentioning

confidence: 99%