Finite element analysis of deformation mechanism for porous materials under fluid–solid interaction

Zhu, Quanyin; He, Yinchuan; Yin, Yajun

doi:10.1179/1432891714z.000000000519

Cited by 12 publications

(9 citation statements)

References 21 publications

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“…In addition, the length and time scale are much shorter in MD simulations, which also limits the application of MD method to investigate mechanical properties of silica aerogels on a large scale [ 16 ]. The finite element method (FEM) is a common numerical method that has been employed to model the mechanical behavior of aerogels at the microscopic scale [ 11 , 17 , 18 , 19 ]. Ma et al [ 11 ] have generated a computational model of aerogels based on DLCA (diffusion-limited cluster aggregation) algorithm, and they use the FEM method and beam theory to successfully predict the power-law relationship between the elastic modulus and relative density of silica aerogels.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of Mechanical Properties of Silica Aerogels: From Rationalization to Prediction

Zheng

Luo

et al. 2018

Materials

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Silica aerogels are highly porous 3D nanostructures and have exhibited excellent physio-chemical properties. Although silica aerogels have broad potential in many fields, the poor mechanical properties greatly limit further applications. In this study, we have applied the finite volume method (FVM) method to calculate the mechanical properties of silica aerogels with different geometric properties such as particle size, pore size, ligament diameter, etc. The FVM simulation results show that a power law correlation existing between relative density and mechanical properties (elastic modulus and yield stress) of silica aerogels, which are consistent with experimental and literature studies. In addition, depending on the relative densities, different strategies are proposed in order to synthesize silica aerogels with better mechanical performance by adjusting the distribution of pore size and ligament diameter of aerogels. Finally, the results suggest that it is possible to synthesize silica aerogels with ultra-low density as well as high strength and stiffness as long as the textural features are well controlled. It is believed that the FVM simulation methodology could be a valuable tool to study mechanical performance of silica aerogel based materials in the future.

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Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of Mechanical Properties of Silica Aerogels: From Rationalization to Prediction

Zheng

Luo

et al. 2018

Materials

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“…4 In practice, the tapered thread is preferably used in high-pressure hydraulic and pneumatic systems, owing to its physical advantages in terms of tight joint, high strength, excellent pressure tolerance and leak-proof resistance without compound sealing. 4 Therefore, the loading performance and dynamic strength analysis of Al-6061-T6 (1 1 4 PT) tapered threaded-pipe connectors in locked torque of preload and in the presence of internal pressure are investigated by using the finite element method [10][11][12][13][14][15][16][17][18][19][20][21] in this study.…”

Section: Introductionmentioning

confidence: 99%

Dynamic strength analysis of Al-6061-T6 threaded-pipe connectors under preload and internal pressure

Hsu

et al. 2015

Materials Research Innovations

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Threaded-pipe connectors are commonly employed in jointing pipelines in hydraulic and pneumatic systems. In an effort to avoid catastrophic incidences from the pipeline deteriorating, it is crucial to comprehend physical and mechanical properties on the thread connections. This paper is purportedly focused on the stress-and-strain analyses of the threaded pipe connector made of Al-6061-T6 (1 1 4 PT), the material of construction of aircraft structures and petroleum facilities, under preload and with internal pressure. Under the preloaded junction, both first and last threads in the pipeline connection are at most susceptible. With the internal pressure, the threaded-contact stress becomes more homogeneously distributed. Because of the contact stress, poising on the first few threads under the preloaded stage, being flattened, the last thread bears the highest contact stress. Finally, we execute an empirical experiment to reveal deformation phenomenon for the threaded-pipe connector, whose result corroborates the previous simulation studies.

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“…In biological sciences, complex interactions between fluids and tissues have been used in modeling syrinxes formation in spinal cord (Heil & Bertram, 2016). In subsurface applications, they have been applied for modeling rock creep formation (Zhu et al, 2014), carbon-dioxide (CO 2 ) sequestration (Knauss et al, 2005;Rutqvist et al, 2007;Vilarrasa et al, 2010), hydraulic fracturing (Zheng et al, 2015), and radioactive waste disposal (Ballarini et al, 2017;Jing et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Interaction Between Fluid and Porous Media with Complex Geometries: A Direct Pore‐Scale Study

Fagbemi

Tahmasebi

Piri

2018

Water Resources Research

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Effect of boundary stress on permeability in porous media at pore‐scale is investigated by means of numerical methods for computing deformation of rock material in the presence of pore fluid. We implement a partitioned, strongly coupled solver for transient fluid‐solid simulations with independent conformed interface meshes for the fluid and solid domains. Fluid flow and solid computations were performed using the finite element method. External load is prescribed along the solid boundary in gradual steps to examine the extent of pore‐scale deformation along internal grain walls while applying a fixed constraint at the opposite end to ensure uniform stress distribution across the media. Hydrodynamic interactions between the pore walls and the matrix leading to interface displacements by fluid viscous forces are also investigated by examining fluid flow with different combinations of Reynolds number. Coupling is achieved via traction and displacements boundary conditions at the interface with respect to Lagrangian coordinates. The role of particle shape in the matrix deformation process is also considered in this paper. In order to examine the how particle shape affects local affects local permeability/stress, we examine fluid movement based on varying Reynolds numbers in Berea sandstone obtained from Micro‐CT image scans at high resolution, and artificially constructed random polydisperse 3‐D sphere packs. It was found that permeability alteration under the influence of uniaxial stress was more in the sandstone sample than in the sphere‐pack and that the sphere‐pack deformed less than the actual sample due to pore geometry, surface smoothness, and homogeneity.

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Finite element analysis of deformation mechanism for porous materials under fluid–solid interaction

Cited by 12 publications

References 21 publications

Simulation and Analysis of Mechanical Properties of Silica Aerogels: From Rationalization to Prediction

Simulation and Analysis of Mechanical Properties of Silica Aerogels: From Rationalization to Prediction

Dynamic strength analysis of Al-6061-T6 threaded-pipe connectors under preload and internal pressure

Interaction Between Fluid and Porous Media with Complex Geometries: A Direct Pore‐Scale Study

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