Influences of fiber reinforced polymer layer on the dynamic deflection of concrete pipes containing nanoparticle subjected to earthquake load

Motezaker, Mohsen; Kolahchi, Reza; Rajak, Dipen Kumar; Mahmoud, S.R.

doi:10.1002/pc.26118

Cited by 34 publications

(10 citation statements)

References 22 publications

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“…Figure 7 shows the influences of volume percent of magnetic nanoparticle upon DIR of aorta artery. The volume percent of nanoparticles for parametric study is chosen between 0% and 3% based on Reference [21]. It is vivid that rise of volume percent of magnetic nanoparticle in blood causes increase in pulsation frequencies of aorta artery.…”

Section: Discussion and Numerical Consequencesmentioning

confidence: 99%

“…Furthermore, drag constant,

C_{D}

, in the conditions that the particles are smooth, the spherical drag are written as

C_{D} goodbreak= a_{1} goodbreak+ \frac{a_{2}}{Re} goodbreak+ \frac{a_{3}}{{Re}^{2}},

in which

a_{1}, a_{2}

and

a_{3}

represent the coefficients which use over various amounts of

italicRe

21 …”

Section: Modeling Of Aorta Arterymentioning

confidence: 99%

“…In this work, in order to solve the motion equations and determine the dynamic instability region (DIR), DQM is employed. Hence, different order of differential equations of cylindrical shell can be converted to set of algebraic equations using following relations 21–32

\frac{d^{n} F ((),, x_{i}, θ_{j})}{{italicdx}^{n}} goodbreak= \sum_{k = 1}^{N_{x}} A_{ik}^{(n)} F ((),, x_{k}, θ_{j}) n goodbreak= 1, \dots, N_{x} goodbreak- 1,

\frac{d^{m} F ((),, x_{i}, θ_{j})}{d θ^{m}} goodbreak= \sum_{l = 1}^{N_{θ}} B_{jl}^{(m)} F ((),, x_{i}, θ_{l}) m goodbreak= 1, \dots, N_{θ} goodbreak- 1,

\frac{d^{n + m} F ((),, x_{i}, θ_{j})}{{dx}^{n} d θ^{m}} goodbreak= \sum_{k = 1}^{N_{x}} \sum_{l = 1}^{N_{θ}} A_{ik}^{(n)} B_{jl}^{(m)} F ((),, x_{k}, θ_{l}),

in which

A_{ik}^{(n)}

as well as

B_{jl}^{(m)}

define weighting coefficients and are expressed as

A_{}

…”

Section: Solving Proceduresmentioning

confidence: 99%

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The effect of pharmaceutical nanoparticles and atherosclerosis in aorta artery on the instable blood velocity based on numerical method

Motaghedifar

Fakhar

Tabatabaei

et al. 2022

Numer Methods Biomed Eng

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In medicine field, dynamic investigation of aorta artery has received attention due to its notable functions and significance upon performance of heart and individual health. Because, aortic injuries cause lethal occurrences having numerous mortality rates. Therefore, more probes, in particular, dynamic response of aorta arteries conveying blood flow containing pharmaceutical nanoparticles is essential. In present research, we attempt to model biomechanically the dynamic instability assessment of aorta arteries with atherosclerosis in tissue matrix conveying blood including pharmaceutical magnetic nanoparticles. Thus, according to classical cylindrical shell theory, the aorta arteries will be considered as elastic cylindrical vessels and symmetric lipid tissue is utilized in order to model atherosclerosis in the artery. Applying magnetic field to nanoparticles results in attraction of lipid tissue in artery. Moreover, the nature of blood flow is regarded non‐Newtonian based on Casson, Carreau, and power law models. Using Hamilton's principle, the motion equations are derived and based on differential quadrature method, the dynamic instability region of aorta artery is obtained. The influences of different variables such as magnetic field, magnetic nanoparticle's volume percent, combined effects of the tissue, lipid's height and length, and non‐Newtonian models upon dynamic behavior of aorta artery are investigated. According to the results, increase in lipid's height leads to increase in resonance frequency of aorta arteries.

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Section: Discussion and Numerical Consequencesmentioning

confidence: 99%

“…Furthermore, drag constant,

C_{D}

, in the conditions that the particles are smooth, the spherical drag are written as

C_{D} goodbreak= a_{1} goodbreak+ \frac{a_{2}}{Re} goodbreak+ \frac{a_{3}}{{Re}^{2}},

in which

a_{1}, a_{2}

and

a_{3}

represent the coefficients which use over various amounts of

italicRe

21 …”

Section: Modeling Of Aorta Arterymentioning

confidence: 99%

\frac{d^{n} F ((),, x_{i}, θ_{j})}{{italicdx}^{n}} goodbreak= \sum_{k = 1}^{N_{x}} A_{ik}^{(n)} F ((),, x_{k}, θ_{j}) n goodbreak= 1, \dots, N_{x} goodbreak- 1,

\frac{d^{m} F ((),, x_{i}, θ_{j})}{d θ^{m}} goodbreak= \sum_{l = 1}^{N_{θ}} B_{jl}^{(m)} F ((),, x_{i}, θ_{l}) m goodbreak= 1, \dots, N_{θ} goodbreak- 1,

\frac{d^{n + m} F ((),, x_{i}, θ_{j})}{{dx}^{n} d θ^{m}} goodbreak= \sum_{k = 1}^{N_{x}} \sum_{l = 1}^{N_{θ}} A_{ik}^{(n)} B_{jl}^{(m)} F ((),, x_{k}, θ_{l}),

in which

A_{ik}^{(n)}

as well as

B_{jl}^{(m)}

define weighting coefficients and are expressed as

A_{}

…”

Section: Solving Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

The effect of pharmaceutical nanoparticles and atherosclerosis in aorta artery on the instable blood velocity based on numerical method

Motaghedifar

Fakhar

Tabatabaei

et al. 2022

Numer Methods Biomed Eng

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“…Kumari et al (2018) investigated the dynamic response of normal moving load in a piezoelectric transversely isotropic half-space with parabolic irregularity. Some recent work on composites structures may also be cited (Al-Furjan et al, 2020, 2021; Askarinejad et al, 2021; Azizkhani et al, 2020; Hadi Hajmohammad et al, 2021; Keshtegar et al, 2020a, 2020b, 2020c; Kolahchi and Kolahdouzan, 2021; Kolahchi et al, 2020, 2021; Kumhar et al, 2020; Malikan and Eremeyev, 2020a, 2020b, 2021a, 2021b; Malikan et al, 2019, 2020a, 2020b; Motezaker et al, 2021; Taherifar et al, 2021; Dastjerdi et al, 2020; Saadatfar, 2020). Singh et al (2017b) examined the effect of different factors (initial stress, irregularity depth, irregularity factor and magneto-elastic coupling parameter) on the dynamic response due to a normal moving load with constant velocity on the free surface of an irregular magneto-elastic transversely isotropic half-space under the state of hydrostatic initial stress.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis on the irregular surface of visco-porous piezoelectric half-space subjected to a moving load

Rakshit

Mistri

Das³

et al. 2021

Journal of Intelligent Material Systems and Structures

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Response of moving load over a surface is an intriguing problem of mechanics to determine the stability and strength of a structure. Owing to this the present theoretical framework is devoted to find the stresses and electrical displacements of an irregular visco-porous piezoelectric half-space originated due to a uniformly moving line load. Expressions for normal stress, shear stress and electrical displacements have been derived in closed form. Effect of irregularity depth, irregularity factors and frictional coefficient on the stresses and electrical displacements are delineated graphically. Numerical demonstration of procured results is interpreted by means of graphs for two different materials, namely PZT-5A and PZT-7. A comparative study emphasising various irregularity (parabolic, rectangular and no irregularity) is among the salient features of the study.

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“…They have been widely studied and applied in aerospace industry, marine structure design, seismic building construction, and sensor detection. [1][2][3][4][5][6] In the face of complex and harsh environment, the theoretical research on the dynamic performance and dynamic stability of composite materials under dynamic load is becoming more and more in-depth. [7][8][9][10] Due to many complex external loads, the composite structure will produce large vibration and noise problems, which will bring security risks such as performance stability to the structure and equipment.…”

mentioning

confidence: 99%

Design of lightweight damping core for composite sandwich structure

et al. 2022

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The damping performance and lightweight design requirements of composite sandwich structure core were studied. A series of low density damping cores were prepared by blending epoxy/polyurethane graft copolymer (E-g-U) and epoxy/poly mercaptan block copolymer (E-b-M) with different contents of hollow glass beads (HGM). The damping properties, mechanical properties, density, and interface morphology of the core layer were studied. The damping response and flexure properties of the sandwich composite structure were studied by modal analysis and three-point flexure test. The experimental results show that optimal damping performance of matrix appears at 60% E-b-M ratio, the peak loss factor is 0.88, and the damping temperature range covers À2 $ 52 C. When the HGM content in the core is 10 phr, the density can be comparable to that of the buoyancy material. Under flexural load, the ultimate shear strength and shear modulus of the sandwich structure increase maximum at 15 phr and 10 phr, respectively. Compared with the unfilled HGM sample, the first three modal damping ratios of the sandwich structure are increased by 133.2%, 56.6%, and 56% by 10 phr damping core, respectively. The results are compared with those in other reference. The research shows that the design of lightweight damping core is expected to provide a core material selection for the vibration reduction of sandwich structures.damping core, damping ratio, flexural properties, low density, sandwich structure | INTRODUCTIONComposite materials have developed from rice straw reinforced clay and reinforced concrete used in ancient times to advanced composite materials nowadays. Their bearing capacity and multi-functional characteristics have been developed incisively and vividly. They have been widely studied and applied in aerospace industry, marine structure design, seismic building construction, and sensor detection. [1][2][3][4][5][6] In the face of complex and harsh environment, the theoretical research on the dynamic performance and dynamic stability of composite materials under dynamic load is becoming more and more in-depth. [7][8][9][10] Due to many complex external loads, the composite structure will produce large vibration and noise problems, which will bring security risks such as performance stability to the structure and equipment. This is why the sandwich structure has become the focus of attention due to its high specific strength, sound absorption, vibration reduction, large stiffness, lightweight, and other obvious characteristics. [11][12][13]

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Influences of fiber reinforced polymer layer on the dynamic deflection of concrete pipes containing nanoparticle subjected to earthquake load

Cited by 34 publications

References 22 publications

The effect of pharmaceutical nanoparticles and atherosclerosis in aorta artery on the instable blood velocity based on numerical method

The effect of pharmaceutical nanoparticles and atherosclerosis in aorta artery on the instable blood velocity based on numerical method

Stress analysis on the irregular surface of visco-porous piezoelectric half-space subjected to a moving load

Design of lightweight damping core for composite sandwich structure

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