Materials physics and mechanics

RAR RUS 1-19 Karunya University Selvamani

India

Karunya Institute of Technology and Sciences Rubine

Tamilnadu, India

Karunya Institute of Technology and Sciences Rexy

Tamilnadu, India

Imam Khomieni International University Ebrahimi

Qazvin, Iran

Dispersion analysis of electrically actuated hygro-magneto-thermo-flexo electric nanobeam embedded on silica aerogel foundation This paper accesses the performance of applied electric voltage in a hygro thermo magneto flexo electric nanobeams embedded on a silica aerogel foundation based on nonlocal elasticity theory. Higher-order refined beam theory via Hamilton's principle is utilized to arrive at the governing equations of nonlocal nanobeams and solved by an analytical solution. A parametric study is presented to analyze the effect of the applied electric voltage on dimensionless deflection via nonlocal parameters, slenderness, moisture constant, critical temperature, and foundation constants. It is found that physical variants and beam geometrical parameters have significant effects on the dimensionless deflection of nanoscale beams. The accuracy and efficiency of the presented model are verified by comparing the results with that of published research. A good agreement has arrived. 10.18149/MPM.5012022_1 applied voltage hygro thermo magnetic effect flexoelectric nanobeam nonlocal elasticity refined beam theory silica aerogel foundation https://mpm.spbstu.ru/article/2022.90.1/ 1-R_-Selvamani-et-al.pdf

RAR RUS 20-36 Universitas Pendidikan Indonesia Sitanggang

Bandung, Indonesia

Universitas Pendidikan Indonesia Sopian

Bandung, Indonesia

Universitas Pendidikan Indonesia Saputra

Bandung, Indonesia

Universitas Pendidikan Indonesia Nandiyanto

Bandung, Indonesia

Universitas Pendidikan Indonesia Hofifah

Bandung, Indonesia

Universitas Pendidikan Indonesia Anggraeni

Bandung, Indonesia

Universitas Pendidikan Indonesia Latifah

Bandung, Indonesia

Physicochemical and mechanical properties of briquettes prepared from the combination of micrometer-sized areca nutshell, tofu dreg, and citronella: from the literature review to experiments Effects of the particle size (i.e. 100, 150, and 500 µm) and composition of biomass on physicochemical and mechanical properties of briquettes were evaluated. This study used biomass from the mixture of tofu dreg (TD), areca nutshell (ANS), and citronella (CN). This study was also completed with a literature review. ANS was carbonized at 250°C for 2 hours. Then, all raw materials (i.e. TD, ANS, and CN) were dried, saw-milled, and mixed with tapioca starch as a binder to form a dough. The particle size and ANS composition gave an impact on the briquettes' performance, including burning rate, specific fuel consumption, and mechanical properties. Particle size influenced the compact component in the briquette. ANS affected carbon and moisture contents in the briquette, improving its compressive strength. This study demonstrates the alternative solution for reducing organic wastes by converting them into briquettes. 10.18149/MPM.5012022_2 briquettes biomass energy mechanical properties tofu dreg areca nutshell citronella https://mpm.spbstu.ru/article/2022.90.2/ 2-A_B_D_-Nandiyanto%2C-S_N_-Hofifah%2C-S_-Anggraeni.pdf

RAR RUS 37-55 Universitas Pendidikan Indonesia Rizky

Bandung, Indonesia

Universitas Pendidikan Indonesia Al Husaeni

Bandung, Indonesia

Universitas Pendidikan Indonesia Nandiyanto

Bandung, Indonesia

Universitas Pendidikan Indonesia Al Husaeni

Bandung, Indonesia

Universitas Pendidikan Indonesia Ragadhita

Bandung, Indonesia

Universitas Pendidikan Indonesia Fiandini

Bandung, Indonesia

The effect of mangosteen peel compositions as reinforcement components on resin-based brake pad performance with computational bibliometric mapping analysis This study aims to determine the effect of differences in the composition of mangosteen peels mangosteen peel particles as a reinforcing component in resin-based brake pads. The manufacture of a brake pad is done by mixing mangosteen peel particles with resin (bisphenol A-epichlorohydrin, and cyclo aliphatic amine (1:1 ratio). Mangosteen rind has a high carbon fiber content as a reinforcing material. Mangosteen rind particles, liquid resin, and hardener were mixed in various ratios of 10:5:5 (MA), 8:5:5 (MB), 6:5:5 (MC), and 4:5:5 (MD). The physical properties and mechanical properties were investigated. The results showed that the friction coefficient of the brake pads made from MA, MB, and MC were 0.69×10-5, 0.68×10-5, and 0.67×10-5, respectively. MD specimens do not allow friction tests due to their highly elastic properties. MA has the lowest wear rate of 0.64, the maximum friction coefficient of 0.69, and the highest hardness level based on mechanical tests. MA specimens have the best ratio of resin to mangosteen peel mixture. This is because, the more the number of mangosteen rind particles used, the harder the brake pads will be. Materials with higher hardness have less mass loss and a higher coefficient of friction. The completion of the research shows that mangosteen peel has a high enough effect as an environmentally friendly brake pads reinforcement material. 10.18149/MPM.5012022_3 agricultural waste brake pad mangosteen peel resin-based brake pad https://mpm.spbstu.ru/article/2022.90.3/ 3-Asep-Bayu-Dani-Nandiyanto-et-al.pdf

RAR RUS 56-65 AAU-9903-2020 7201550330 0000-0002-5934-8138 Peter the Great St. Petersburg Polytechnic University Belyaev Alexander belyaev_ak@spbstu.ru

St.Petersburg, Russia

Institute for Problems in Mechanical Engineering RAS Galyautdinova

St. Petersburg, Russia

Institute for Problems in Mechanical Engineering RAS Smirnov

St. Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Bessonov

St.Petersburg, Russia

Analytical and numerical solution to the problem of hydrogen diffusion in rotating cylindrical elastic bodies The work is devoted to the solution of the problem of hydrogen diffusion in rotating cylindrical elastic bodies compressed by two distributed loads. The study includes the analytical determination of the stress state of the body on the basis of known stresses from the Hertz contact problem, the derivation of the hydrogen diffusion equation in a rotating body in the found field of elastic stresses, and the numerical solution of the obtained hydrogen diffusion equation. The numerical solution of the diffusion equation was carried out by the method of finite differences. According to the numerical solution of the diffusion equation, the effect of hydrogen concentration localization near the outer boundary was detected. This result is consistent with experimental studies of the distribution of hydrogen concentration in roller bearings. This problem is important for diagnostics of failures of rolling bearings due to hydrogen embrittlement. 10.18149/MPM.5012022_4 hydrogen diffusion diffusion equation rolling bearings stress state https://mpm.spbstu.ru/article/2022.90.4/ 4-A_K_-Belyaev%2C-A_R_-Galyautdinova-et-al.pdf

RAR RUS 66-73 0000-0001-7577-1262 Ioffe Institute Klyachkin L.E.

St.Petersburg, Russia

0000-0002-4667-7004 Ioffe Institute Malyarenko A.M.

St.Petersburg, Russia

Ioffe Institute Rul' N.I.

St. Petersburg, Russia

0000-0001-8286-3472 Ioffe Institute Bagraev N.T.

St.Petersburg, Russia

P-4505-2016 7006034020 0000-0002-2973-8645 Institute of Problems of Mechanical Engineering RAS Kukushkin S.A. sergey,a.kukushkin@gmail.com

St.Petersburg, Russia

Institute of Problems of Mechanical Engineering RAS Osipov A.V.

St.Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Romanov V.V.

St. Petersburg, Russia

Room-temperature quantum oscillations of static magnetic susceptibility of silicon-carbide epitaxial layers grown on a silicon substrate by the method of the coordinated substitution of atoms The article presents the results of measurement and analysis of the field dependences of the static magnetic susceptibility of thin epitaxial silicon carbide films grown on the (110) surface of single-crystal silicon by the method of the coordinated substitution of atoms. In weak magnetic fields, the occurrence of two quantum effects at room temperature was experimentally found: the hysteresis of the static magnetic susceptibility and, in the field dependences, quantum Aharonov-Bohm oscillations of the static magnetic susceptibility. The simultaneous occurrence of these effects is a consequence of two- and one-particle interference of charge carriers (two-dimensional holes) on microdefects consisting of dipole centers with negative correlation energy (negative-U dipole centers). 10.18149/MPM.5012022_5 silicon carbide on silicon dilatation dipoles static magnetic susceptibility diamagnetism quantum Aharonov-Bohm oscillations quantum interference negative correlation energy negative-U boron dipoles https://mpm.spbstu.ru/article/2022.90.5/ 5-N_T_-Bagraev%2C-S_A_-Kukushkin%2C-A_V_-Osipov-et-al(1).pdf

RAR RUS 74-88 7005573911 St.Petersburg State University Morozov N.F.

St.Petersburg, Russia

Indian Institute of Technology Roorkee Bisht

Roorkee, India

Indian Institute of Technology Roorkee Iqbal

Roorkee, India

Indian Institute of Technology Roorkee Kamran

Roorkee, India

Institute for Problems of Mechanical Engineering of the RAS Bratov

St.Petersburg, Russia

Numerical study of thin UHPC targets response against ballistic impact The modelling of concrete and its dynamic strength analysis has been an interesting field which seeks many researchers' attention for the last few decades. The material behavior of concrete in extreme dynamic events like blast and impact calls for the understanding of its dynamic characterization as well which demand a suitable material model that can depict the behavior of concrete under high strain rate, high pressure, and large deformations. One of the most used constitutive material models for concrete is HJC (Holmquist Johnson Cook). This model covers most of the essential features of concrete pertaining to response against blast and impact loads. The objective of this paper is to provide an in-depth assessment of the HJC model implemented in ABAQUS Explicit finite element code. The assessment involves various tests such as compression, tensile and tri-axial tests on a single element followed by validation of the numerical model with the help of ballistic experimental tests available in the open literature. Finally based on the assessment, the HJC material model utility for the behavior of thin i.e., H/d ≥ 5, UHPC (Ultra High-Performance Concrete) targets against impact loading has been discussed. 10.18149/MPM.5012022_6 HJC (Holmquist Johnson Cook) UHPC (Ultra High-Performance Concrete) ABAQUS Explicit finite element code ballistic experimental tests https://mpm.spbstu.ru/article/2022.90.6/ 6-M_-Bisht%2C-M_A_-Iqbal-et-al.pdf

RAR RUS 89-106 Perm National Research Polytechnic University Anoshkin

Perm, Russia

Perm National Research Polytechnic University Pisarev

Perm, Russia

Perm National Research Polytechnic University Ermakov

Perm, Russia

Perm National Research Polytechnic University Roman

Perm, Russia

Microstructural modeling and prediction of effective elastic properties in 3D reinforced composite material We consider a textile composite material reinforced by carbon fibers with 3D orthogonal braiding and a polymer matrix. Microstructural studies were carried out to find the mean values and variation coefficients for the parameters of the braid unit cell within the reinforcement cage. We have constructed an algorithm along with geometric models for cells and fragments of the composite structure, providing different descriptions for the parameters of the binder yarn. The micromechanics problem was solved by the local approximation method; the fields of structural stresses and strains were determined for different models of composite fragments. The fields were averaged to compute the composite's effective elastic properties compared to the experimental data. 10.18149/MPM.5012022_7 spatially reinforced composite material microstructure experimental studies unit cell mathematical modeling micromechanics local approximation method effective elastic properties https://mpm.spbstu.ru/article/2022.90.7/ 7-A_N_-Anoshkin%2C-P_V_-Pisarev-et-al.pdf

RAR RUS 107-117 ITMO University Nuryev

St.Petersburg, Russia

ITMO University Prasolov Nikita

St. Petersburg, Russia

ITMO University Sokura

St.Petersburg, Russia

ITMO University Bauman Dmitrii

St.Petersburg, Russia

ITMO University V.E. Bougrov

St.Petersburg, Russia

F-1445-2014 7202768874 0000-0003-3738-408X ITMO University Romanov Alexey alexey.romanov@niuitmo.ru

St.Petersburg, Russia

ITMO University Panov Dmitrii

St.Petersburg, Russia

ITMO University Zhang

St. Petersburg, Russia

ITMO University Spiridonov Vladislav

St.Petersburg, Russia

ITMO University Azina

St. Petersburg, Russia

Thin films of gallium oxide obtained by spray-pyrolysis: method and properties In this article, we report on fabricating thin solid films of gallium oxide by the spray-pyrolysis method. This method allows obtaining uniform thin films more easily compared with other sol-gel methods like spin-coating or dip-coating. In the experiment, sol concentrations were experimentally selected for further deposition on substrates. Morphology and chemical composition of the deposited films were studied by Scanning Electron Microscopy and Energy-Dispersive X-ray spectroscopy, respectively. The structural properties of the films were analyzed by X-ray diffraction method. The band gap of the Ga2O3 films was estimated by analyzing the optical transmission spectra and was 4.87 eV. The quality and homogeneity of the obtained coatings are evaluated. 10.18149/MPM.5012022_8 sol-gel spray-pyrolysis thin film gallium oxide ultrawide bandgap semiconductor https://mpm.spbstu.ru/article/2022.90.8/ 8-D_I_-Panov%2C-X_-Zhang%2C-V_A_-Spiridonov_et-al.pdf

RAR RUS 118-125 Altai State Technical University Poletaev Gennady M.

Barnaul, Russia

Altai State University Rakitin

Barnaul, Russia

Molecular dynamics simulation of severe plastic deformation of nanotwinned Hadfield steel The features of the plastic deformation at the atomic level and the formation of a dislocation structure in nanotwinned Hadfield steel under severe shear deformation along the direction perpendicular to parallel coherent twins were studied by the method of molecular dynamics. Similar studies for comparison were carried out for austenite. Dislocations in steel propagated and developed more weakly than in austenite, stacking faults between partial dislocations were shorter, and the number of dislocations was smaller, which was a consequence of the interaction of dislocations with impurity carbon atoms in steel. The main plastic shifts inside the computational cells containing parallel twins occurred predominantly along twin boundaries in the form of twinning dislocations. Dislocations from another slip system, not parallel to the twin boundaries, practically did not form. As a result of the passage of twinning dislocations, the twins moved during deformation. 10.18149/MPM.5012022_9 molecular dynamics deformation nanotwinned metal Hadfield steel https://mpm.spbstu.ru/article/2022.90.9/ 9-G_M_-Poletaev%2C-R_Y_-Rakitin.pdf

RAR RUS 126-140 MKSSS's Cummins College of Engineering for Women Avinash

Maharashtra, India

Kalasalingam Academy of Research and Education Irulappasamy

Tamilnadu, India

BRACT's Vishwakarma Institute of Information Technology Pavan

Maharashtra, India

BRACT's Vishwakarma Institute of Information Technology Prashant

Maharashtra, India

Universiti Teknologi PETRONAS Ameen

Perak, Malaysia

MKSSS's Cummins College of Engineering for Women Yashwant

Maharashtra, India

Numerical simulation of low-velocity impact test on PALF/Epoxy bio-composite laminates Natural fiber-reinforced composites are highly demanded as it reduces the dependency on petroleum-based materials. The present work is focused on investigating the performance of PALF/Epoxy composite laminates under low-velocity impact through finite element analysis. The study presented to understand energy absorption, force-time response, force-displacement response, and damage characteristics of PALF/Epoxy composites. The composites with varying PALF fiber content (30, 40, and 50 % volume fraction) are modeled and simulated using LS-Dyna. Drop weight impact simulations of these composites are performed at different energy levels (3, 5, 10, 15, 20 J). The Impact simulations showed that the peak force of impact and displacement increases as the impact energy level increases. For 20 J of impact energy, a rise in fiber content from 30 to 40% and 40 to 50% volume fraction improved the energy absorption by 30.7 and 10.1 % respectively. PALF/Epoxy (30 % volume fraction) composites exhibited the peak force of 0.7678, 0.8666, and 0.9113 kN with a maximum displacement of 6.09, 14.74, 38.42 mm at 3, 10, and 20 J impact energy levels respectively. The impact study results designate that energy absorption of the specified composites is enhanced with increased loading of PALF content. H and Cross kind-shaped damage were witnessed for the first layer of PALF/Epoxy composites laminates. 10.18149/MPM.5012022_10 pineapple leaf fiber (PALF) epoxy low-velocity impact LS-Dyna finite element analysis (FEA) https://mpm.spbstu.ru/article/2022.90.10/ 10-Raut-Pavan%2C-Anerao-Prashant-et-al.pdf

RAR RUS 141-157 Moscow Aviation Institute (National Research University) Vestyak

Moscow, Russia

Moscow Aviation Institute (National Research University) Zemskov

Moscow, Russia

Lomonosov Moscow State University Tarlakovskiy

Moscow, Russia

Modeling of unsteady elastic diffusion transverse vibrations of the isotropic simply supported Timoshenko plate The unsteady problem of a homogeneous isotropic Timoshenko plate bending taken into account diffusion is considered. The initial mathematical formulation includes a system of equations of rectangular isotropic plate unsteady vibrations, obtained from a general model of elastic diffusion for continuum using the d'Alembert variational principle. An initial-boundary value problem is formulated, and Green's functions are found in the problem of a simply supported Timoshenko plate bending. In the example of a three-component rectangular plate under the action of a pair of bending moments, the interaction effects of mechanical and diffusion fields and the influence of relaxation processes on the kinetics of mass transfer are modelled. The calculation results are presented in analytical and graphical forms. 10.18149/MPM.5012022_11 Timoshenko plate elastic diffusion unsteady problems coupled problem multicomponent continuum Green's functions https://mpm.spbstu.ru/article/2022.90.11/ 11-V_A_-Vestyak%2C-A_V_-Zemskov%2C-D_V_-Tarlakovskii.pdf

RAR RUS 158-165 Mechanical Engineering Research Institute, Russian Academy of Science Sarafanov

Nizhni Novgorod, Russia

Kozma Minin Nizhny Novgorod State Pedagogical University Shondin

Nizhny Novgorod, Russia

Instability of plastic deformation in crystalline alloys: the Portevin-Le Chatelier effect A mechanism of the plastic deformation instability of crystalline alloys is considered in an autowave model of the Portevin-Le Chatelier effect. The model is defined by a system of differential equations for deforming stress, dislocation velocity, the concentration of dissolved impurity atoms interacting with moving dislocations, and forming an "atmosphere" of atoms around them, which provides braking of dislocations. In the model, the distribution of impurity atoms at a certain dislocation rate is considered to be stationary, which is typical for elevated temperatures. In this case, it is shown that the braking force at a dislocation velocity above the critical one has a region of negative sensitivity to the deformation rate, as a result of which the Portevin-Le Chatelier effect is realized. The numerical solution of the original system under the assumptions made showed that the effect manifests itself in the form of relaxation self-oscillations of the deforming stress and the rate of plastic deformation. An expression for the oscillation period is obtained, which is inversely proportional to a given rate of plastic deformation and temperature. 10.18149/MPM.5012022_12 Portevin-Le Chatelier effect alloys serrated deformation high temperatures relaxation self-oscillation https://mpm.spbstu.ru/article/2022.90.12/ 12-G_F_-Sarafanov%2C-Yu_G_-Shondin.pdf

RAR RUS 166-183 Kurukshetra University Bansal

India

Kurukshetra University Gupta

India

The effect of phase lags and fractional parameters on waves across an elastic and thermoelastic medium In this paper, three-phase lag heat transfer model Roychoudhari [1] is employed to study the problem of reflection and transmission of thermoelastic waves of an obliquely incident plane P or SV wave at the interface between an elastic solid and a fractional order thermoelastic solid subjected to continues boundary conditions. The amplitude reflection and amplitude transmission coefficients are derived by using the potential method. It was found that the energy ratios and amplitude ratios of waves depend upon the incident angle and the frequency of the incident wave. The problem is illustrated by computing numerical values of amplitude ratios and energy ratios for the copper material. Graphical results for two-phase lag are compared with the corresponding results for three-phase lag theory of thermoelasticity. The effect of fractional order on the energy ratios is also discussed graphically. The present derivation is used to study the energy conservation among the incident, reflected, and transmitted waves. It is verified that in this process there is no energy dissipation at the interface. 10.18149/MPM.5012022_13 amplitude; fractional reflection transmission three-phase lag elastic waves energy ratio https://mpm.spbstu.ru/article/2022.90.13/ 13-Puneet-Bansal%2C-Vandana-Gupta.pdf

RAR RUS 184-191 Dr. A.G.D. Bendale Girls College Sarode

Jalgaon, India

M.J. College Mahajan

Jalgaon, India

Designing aspects of photoacoustic cell for crystalline solids Today, non-destructive analysis techniques for solids are playing an important role in industrial applications and scientific as well as technological research. Photoacoustic method is one of such non-destructive methods, in which generation of acoustic waves takes place due to the absorption of the modulated incident radiation. Photoacoustic cell is a base for photoacoustic research. Hence design and performance optimization play an important role in determining the efficiency of that cell. The design of the photoacoustic cell depends on various aspects like mode of operation, thermal diffusion, nature of the radiation source, and type of the detector. In this paper, designing aspects of a new photoacoustic cell for crystalline solids are presented. A mathematical expression for population density of absorbing molecules in the excited state of a crystalline solid during photoacoustic interaction in terms of the radiative and collisional time constants is also determined. 10.18149/MPM.5012022_14 crystalline solids photoacoustic transducers photoacoustic testing photoacoustic effect photoacoustic cell https://mpm.spbstu.ru/article/2022.90.14/ 14-A_P_-Sarode%2C-O_H_-Mahajan.pdf