Initial and couple stress influence on the surface waves transmission in material layers with imperfect interface

Singhal, Abhinav; Sahu, Sanjeev A.; Chaudhary, Soniya; Baroi, Juhi

doi:10.1088/2053-1591/ab40e2

Cited by 26 publications

(5 citation statements)

References 38 publications

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“…According to the principle of entropy increase, the polyethylene molecular chain transitions from regular to random motion, and the groups (CH3–CH2) rotate more freely. In the process of molecular chain configuration change and diffusion, a new interface coupling is formed [ 37 , 38 , 39 ], as shown in Figure 5 . In addition, the polyethylene molecular chain becomes curled and shows good flexibility.…”

Section: Resultsmentioning

confidence: 99%

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Changsheng

Qiang

et al. 2022

IJMS

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Understanding the properties of polymer–metal interfacial friction is critical for accurate prototype design and process control in polymer-based advanced manufacturing. The transient polymer–metal interfacial friction characteristics are investigated using united-atom molecular dynamics in this study, which is under the boundary conditions of single sliding friction (SSF) and reciprocating sliding friction (RSF). It reflects the polymer–metal interaction under the conditions of initial compaction and ultrasonic vibration, so that the heat generation mechanism of ultrasonic plasticization microinjection molding (UPMIM) is explored. The contact mechanics, polymer segment rearrangement, and frictional energy transfer features of polymer–metal interface friction are investigated. The results reveal that, in both SSF and RSF modes, the sliding rate has a considerable impact on the dynamic response of the interfacial friction force, where the amplitude has a response time of about 0.6 ns to the friction. The high frequency movement of the polymer segment caused by dynamic interfacial friction may result in the formation of a new coupled interface. Frictional energy transfer is mainly characterized by dihedral and kinetic energy transitions in polymer chains. Our findings also show that the ultrasonic amplitude has a greater impact on polymer–metal interfacial friction heating than the frequency, as much as it does under ultrasonic plasticizing circumstances on the homogeneous polymer–polymer interface. Even if there are differences in thermophysical properties at the heterointerface, transient heating will still cause heat accumulation at the interface with a temperature difference of around 35 K.

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Section: Resultsmentioning

confidence: 99%

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Changsheng

Qiang

et al. 2022

IJMS

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“…On comparing with figure 3, one can find that the ease of propagation is higher in the case of the monoclinic medium as compared to the triclinic medium of 21 elastic coefficients. In figure 6, dimensionless phase velocity against dimensionless wave number has been studied for the monoclinic material by means of equation (11) to study the impact of R. It has been noticed that velocity decreases uniformly throughout the domain of wave number, although it decreases minutely on increasing R.…”

Section: Numerical Computation and Discussionmentioning

confidence: 99%

“…Moreover, the influence of dissipation and initial stresses on damping and phase velocities of torsional wave propagation have been explored. The impact of the initially stressed dissipative cylinder on Torsional wave dispersion has been analyzed by Singhal [11]. Dynamic response of torsional wave propagation in a pre-stressed circular cylinder embedded in a pre-stressed elastic medium has been explored by Ozturk and Akbarov [12].…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of torsional waves in an anisotropic infinite cylinder with finite thickness

Kumawat

Vishwakarma²

2022

Phys. Scr.

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The transference of torsional surface waves in an infinite anisotropic cylinder has been investigated. The equation of motion has been expressed in the cylindrical coordinate system, and by the means of the separation of variables, the displacement has been derived in terms of the Bessel function of the first kind and second kind. With the use of suitable boundary conditions, the dispersion equation has been deduced in a closed-form. Particular cases have been derived for monoclinic, orthotropic, transversely isotropic(precisely transtropic), and isotropic medium. In order to exhibit the present findings, graphs have been plotted for phase velocity against wave number to study the impact of elastic coefficients and the ratio of radii of the cylinder. In the end, phase velocity for different media has been compared. The study can be useful to construct torsional wave sensors in predicting the extent of damage during an earthquake by means of artificial explosions.

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“…Kumar and Harsha (2021c, 2021d) studies the vibration behavior of the functionally graded piezoelectric perfect/porous plate under thermo-electrical and electromechanical loading conditions. Singhal et al (2018a, 2018b, 2019a, 2019b, 2021), Saroj et al (2019), and Singhal and Sahu (2017) studied the different types of surface wave on the different smart material based composite plates and used the solution method is the analytical/approximation. Ebrahimi et al (2021, 2020) investigate the modeling of the magneto-electro elastic analysis of the piezoelectric flexoelectric nanostructures beams resting on the silica aerogel foundations.…”

Section: Introductionmentioning

confidence: 99%

Static and vibration response analysis of sigmoid function-based functionally graded piezoelectric non-uniform porous plate

Kumar

Harsha

2022

Journal of Intelligent Material Systems and Structures

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This paper has done static and vibration response analysis of the sigmoid functionally graded piezoelectric (S-FGP) tapered plate under thermo-electric load with different even/uneven type porosity. The governing equations of plate motion are derived using first-order shear deformation theory (FSDT) based displacement fields with Hamilton’s principle, and material property distribution is considered as per sigmoid law in the thickness direction of the FGP plate. The obtained governing equations are solved using the higher-order finite element method (FEM) with nine noded interpolation functions with 63 degrees of freedom (DOFs) per element. Convergence and the comparison study have been performed to exhibit the efficacy of the present study. It is observed that parameters like the non-dimensional center deflection, non-dimensional stress, and non-dimensional frequency are decreased as the material gradient index increases. The positive and negative types of electric loading have considerable effects on the pre/post type buckling configuration of the porous S-FGP tapered plate under thermal effect. The present analysis results can be used in the various smart structure application made of porous FGP materials.

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Initial and couple stress influence on the surface waves transmission in material layers with imperfect interface

Cited by 26 publications

References 38 publications

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Polymer–Metal Interfacial Friction Characteristics under Ultrasonic Plasticizing Conditions: A United-Atom Molecular Dynamics Study

Dynamic response of torsional waves in an anisotropic infinite cylinder with finite thickness

Static and vibration response analysis of sigmoid function-based functionally graded piezoelectric non-uniform porous plate

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