RETRACTED ARTICLE: Chaotic simulation of the multi-phase reinforced thermo-elastic disk using GDQM

Al-Furjan, M.S.H.; Habibi, Mostafa; Rahimi, Alireza; Chen, Guojin; Safarpour, Hamed; Safarpour, Mehran; Tounsi, Abdelouahed

doi:10.1007/s00366-020-01144-2

Cited by 93 publications

(19 citation statements)

References 124 publications

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“…Al-Furjan et al [11] presented the influences of some geometrically and physically parameters of multiscale hybrid nanocomposite and new smart and composite materials fiber on the frequency of the sandwich structure. Al-Furjan et al [12] adopted a mathematical derivation to develop a nonlinear dynamic model for the nonlinear frequency and chaotic responses of the multiscale hybrid nanocomposite reinforced disk in the thermal environment and subject to a harmonic external load. Metrikine and Vrouwenvelder [13] developed an analytical solution for the tunnel in twodimensional elastic-layered foundation subjected to a moving point load.…”

Section: Introductionmentioning

confidence: 99%

“…Rajapakse and Senjuntichai [17,18] proposed an accurate stiffness matrix method for the dynamic response of layered soils using integral transformation. Al-Furjan et al [12] develop a nonlinear dynamic model for the nonlinear frequency and chaotic responses of the multiscale hybrid nanocomposite reinforced disk in the thermal environment and subject to a harmonic external load. Luco and Apsel [19] used the TRM method to obtain the dynamic response Green function of the three-dimensional layered elastic halfspace.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Vibration of the Ground Surface by Using the Layered Soil: Viscoelastic Euler Beam Model due to the Moving Load

Hong-yuan

Zhao

Rong

et al. 2021

Mathematical Problems in Engineering

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Moving loads will have a certain impact on the safety of the structures. Since concrete is a viscoelastic material, the elastic concrete model cannot describe its viscoelastic characteristics under moving loads. It is necessary to establish a model that can describe the viscoelastic characteristics of concrete materials. In addition, the layered of the soil is also an important factor affecting the propagation of subway vibration waves. Considering the effects of the properties of the concrete material of the subway tunnel structure and the layered soil foundation as well as the load velocity on the vibration of the ground surface caused by the moving load, the standard linear elastic solid Euler beam model is described for the subway tunnel structure in this paper. The equivalent stiffness of the layered soil-viscoelastic beam coupling system subjected to a moving load is formed by using the transmission and reflection matrix (TRM) method. The numerical solution of ground surface displacement caused by subway tunnel in time-space domain is obtained by IFFT algorithm. The correctness of the algorithm is verified by comparing with the reference results. Numerical results show that, with the increase of the viscous coefficient of the viscoelastic Euler beam, the vibration amplitude of the ground surface will decrease. Up to a certain value of the increasing the viscous coefficient of the Euler beam, it will have little effect on the vibration amplitude of the ground surface. Therefore, the standard solid model of viscoelastic Euler beam can well describe the creep and relaxation of materials. The model of viscoelastic beam is reasonable for the working condition of subway tunnel concrete structure. At high speed of moving load, the maximum value of ground surface displacement spectrum will appear at the smaller frequency domain and the maximum value of displacement spectrum will also increase for the soft layer soil, while it is opposite to that of the stiffer layer soil.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Vibration of the Ground Surface by Using the Layered Soil: Viscoelastic Euler Beam Model due to the Moving Load

Hong-yuan

Zhao

Rong

et al. 2021

Mathematical Problems in Engineering

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“…e research on the mechanical behavior of plate and beam structures resting on different elastic foundations has been studied by scientists, typically in works [21][22][23][24][25][26][27][28][29][30]. In works [27,29,[31][32][33][34][35], the authors explored the mechanical response of beams and plates taking into account the effect of temperature with numerous different theories.…”

Section: Introductionmentioning

confidence: 99%

Free Vibration Investigations of Rotating FG Beams Resting on Elastic Foundation with Initial Geometrical Imperfection in Thermal Environments

Van

2021

Mathematical Problems in Engineering

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In practical operations of mechanical structures, it is not difficult to meet some large components such as helicopter rotors, gas turbine blades of marine engines, and rotating railway bridges, where these elements can be seen as beam models rotating around one fixed axis. Therefore, mechanical explorations of these structures with and without the effect of temperature will guide the design, manufacture, and use of them in practice. This is the first paper that uses the shear deformation theory-type hyperbolic sine functions and the finite element method to analyze the free vibration response of rotating FGM beams with initial geometrical imperfections resting on elastic foundations considering the effect of temperature. The material properties are assumed to be varied in the thickness direction of the beam based on the power law function and temperature changes The proposed theory and mathematical model are verified by comparing the results with other exact solutions. The numerical investigations have taken into account some geometrical and material parameters to evaluate the effects on the vibration behavior of the structure such as the rotational speed, temperature, as well as initial geometrical imperfections. The drawn comments have numerous scientific and practical implications for rotating beam structures.

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“…Al-Furjan et al. 22 developed mathematical equations for developing a non-linear dynamic model for non-linear frequency and chaotic responses of multi-scale hybrid nano composite reinforced disk in thermal environment subjected to a harmonic external load. They recommended for choosing plates with lower thickness relative to outer radius in order to achieve better vibration performance.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of continuum robot for colonoscopy using finite element simulation

Singh

Murali

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Medical robots have massive potential for improving the precision and capabilities for doctors to perform surgical procedures. For detecting colon cancers, these robots are also capable of suturing and inchworm devices can move over the narrow passages as required inside human colon. Most of the existing medical robots are designed and developed in order to enhance their stiffness to minimize the vibration of the end-effectors to obtain good position accuracy. In addition to this, it is important to study the dynamic characteristics of the colonoscope, such as load, stress, and strain for understanding the suitability of material used for colonoscope. In this paper, silicone rubber with selected specifications is used as colonoscope material and Mooney Rivlin equations are solved using ABAQUS software. Pneumatic pressure is taken as input parameter (0.1 MPa to 0.5 MPa). Finite Element Simulation is carried out and results are plotted for various set of values of input pressure. The results obtained indicate that silicone rubber with specified characteristics is a suitable material for colonoscope and it increases the comfort for the patient by exerting less force on the colon while it is moved inside the colon.

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RETRACTED ARTICLE: Chaotic simulation of the multi-phase reinforced thermo-elastic disk using GDQM

Cited by 93 publications

References 124 publications

Analysis of the Vibration of the Ground Surface by Using the Layered Soil: Viscoelastic Euler Beam Model due to the Moving Load

Analysis of the Vibration of the Ground Surface by Using the Layered Soil: Viscoelastic Euler Beam Model due to the Moving Load

Free Vibration Investigations of Rotating FG Beams Resting on Elastic Foundation with Initial Geometrical Imperfection in Thermal Environments

Dynamic characteristics of continuum robot for colonoscopy using finite element simulation

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