
Irina GoryachevaRussian Academy of Sciences | RAS · Ishlinsky Institute for Problems in Mechanics
Irina Goryacheva
Dr.Sci, PhD
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245
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Publications (245)
The tribological properties of carbon–carbon antifriction composite materials reinforced with carbon fabric based on polyacrylonitrile and viscose raw materials have been studied. Tribological tests were carried out according to the ring–disc scheme paired with silicon carbide ceramics under dry friction conditions with different orientations of th...
Molybdenum disulfide (MoS2) has gained significant attention due to its exceptional properties, which include a low friction coefficient, high wear resistance, and excellent thermal stability, contingent upon specific conditions. This review paper offers a thorough analysis of the literature with a focus on space applications, emphasizing the vital...
Исследовано контактное взаимодействие с упругим полупространством периодической системы осесимметричных штампов с двумя высотными уровнями при отсутствии сил трения. Решение задачи строится с помощью метода локализации. Получены аналитические выражения, определяющие контактные характеристики взаимодействия (радиус пятен контакта и распределение кон...
The analytical solution of the elastic contact problem for the bodies with rough surfaces is presented using a deterministic description of the surface roughness. Particularly, a model of the normal contact of a periodic system of axisymmetric punches of different heights with an elastic half-space is developed. The solution is obtained taking into...
This study presents the results of modelling the rolling contact of the elastic sphere and the elastic half-space in the presence of a thin intermediate viscoelastic layer which properties are described by an elastic nonlinear Winkler body in the normal direction and a viscoelastic Maxwell body in the tangential direction. The analytical–numerical...
The paper presents a solution of the contact problem for a periodic two-level system of axisymmetric punches and a viscoelastic half-space. The case of a constant nominal pressure applied to the punch system is considered. The variation of the real contact area in time and the conditions that provide the contact of the punches of both levels with t...
The indentation of a periodic system of axisymmetric indenters into an elastic half-space is analytically investigated taking into account the mutual influence of the contact spots. The system consists of two levels of indenters with a given height difference and is loaded by the given nominal pressure. For definiteness, it is assumed that at each...
The contact fatigue phenomenon in conditions of cyclic sliding or rolling is studied based on the model of contact fatigue damage accumulation in the subsurface layers of the material. It is assumed that the rate of the damage accumulation depends on the principal shear stress amplitudes. The results of numerical modelling show that the contact fat...
The regularities of the formation of the resulting raster tool trajectories based on Lissajous figures for the lapping process of planes are established. This makes it possible to maximize the cutting ability of the tool, which contributes to its more uniform wear and increased productivity and processing quality. Optimal parameters of productivity...
The contact problem for a rolling elastic sphere and an elastic half-space covered with a viscoelastic layer (third body) is considered. The layer properties in normal and tangential directions are described by the Maxwell model. Based on the macroscopic approach of the contact fatigue damage accumulation the rate of damage accumulation in an elast...
Fatigue wear and damage accumulation take place in the wheel and rail interaction, rolling bearings and so on. In this study the three-dimensional contact problem for a cyclic rolling of an elastic sphere over an elastic half-space is considered which allows us to study the effect of relative slip velocity on the damage accumulation and kinetics of...
Currently, stereotaxic brain surgery is an actively developing branch of medicine. During these operations, a special needle is inserted into the brain through a hole in the skull. This needle is moved in the brain tissue so that its tip reaches a certain point, after which the necessary medical manipulation is performed (for example, taking a punc...
A model of capillary adhesion between an elastic half-space and an axisymmetric asperity or a periodic system of asperities is presented. The model is based on the contact problem solution for an indenter, whose shape is described by the power law function, in contact with an elastic half-space in the presence of an additional load (Laplace capilla...
In this chapter, an approach to solve periodic contact problems for a rigid body with a regular surface microgeometry penetrating the elastic half-space is developed. This approach based on the localization principle makes it possible to take into account the interaction between contact spots. The method allows one to simplify the calculation of co...
In this chapter, models to study the mechanical component of the friction force caused by the energy dissipation in cyclic deformation of deformable bodies are presented. So the models developed take into account both imperfect elasticity and the surface microgeometry of contacting bodies. Solutions of periodic contact problems for viscoelastic bod...
In this chapter, models are presented to describe the contact interaction between elastic bodies with nominally flat surfaces, one of which has a regular microrelief taking into account adhesion of different nature — molecular attraction or capillary adhesion due to fluid menisci near real contact spots. The solutions obtained made it possible to a...
In this chapter, models to study the adhesive friction are developed. The process of normal approach and retraction of two asperities in the presence of adhesion is considered. The energy loss (dissipation) in an interaction cycle of two axisymmetric elastic asperities is calculated for the cases of capillary and molecular adhesion. The value of th...
This review presents a collection of the solved dynamic problems taking into account the normal and shear stress distributions in the contact region due to the deformation of contacting bodies. The considered dynamic problems differ in the number of degrees of freedom and the type of relative displacements of contacting bodies (2-D models with roll...
The model of the frictional interaction of a fiber composite material with a rigid non- wearing body is proposed, which makes it possible to study the effect of the mechanical and strength characteristics of the fiber and matrix materials and the composite structure on its stress state, in particular, at the fiber-matrix interface. Analysis of the...
In some surgical operations, a needle is inserted into the patient’s brain to perform the necessary manipulations (for instance, a biopsy). In this context, the study of the interaction between the needle and the brain tissue is an important task. One of common ways to perform experimental study of such interaction is through the use brain phantoms...
In "Contact Mechanics Perspective of Tribology", J. Greenwood & J. Barber, Müser & Q.J. Wang, J. Luo & J. Krim, K. Nakano & I. Etsion and many other renown experts show to what extent one can understand tribology with macroscopic contact mechanics.
This paper investigates the influence of the material properties on the deceleration dynamics of a deformable cylinder rolling with slipping on a half-space of the same material. The interaction of the cylinder and the half-space is described by the 2D quasistatic contact problem of viscoelasticity (Goryacheva: J Appl Math Mech 37(5):877–885, 1973;...
The interaction of a periodic system of rigid spherical indenters with a viscoelastic half-space is considered. The linear viscoelastic models (the standard viscoelastic solid model and the Maxwell model) are used to describe the mechanical behavior of the half-space. The case of a constant load applied to each indenter is investigated. Using the l...
It is a time to gather stones... The Research Topic (RT) "Contact Mechanics Perspective of Tribology" was planned as a comprehensive overview of recent developments in the areas of contact mechanics and friction. Much has changed in this field in the last few decades. Contact mechanics expanded to qualitatively new fields of application which are a...
Folic acid (FA) is a natural body component essential for normal cell growth and division. Uptake of FA into cells is mediated by the folate receptors with particularly large amount of folate receptors found on the surface of cancer cells. This feature traditionally is used for selective drug delivery systems targeting in cancer cells or visualizat...
A model is proposed to describe the steady-state regime of wear for a fibrous composite material in contact with a rigid counter body. The composite material is modeled by an elastic half-space with embedded elastic fibers arranged parallel to each other and distributed uniformly. The fibers hardness is assumed to be different from that of the matr...
Using a combination of experimental Raman, FTIR, UV–VIS absorption and emission data, together with the corresponding DFT calculations we propose the mechanism of modification of the folic acid specifically under the hydrothermal treatment at 200 °C. We established that folic acid breaks down into fragments while the pteridine moiety remains intact...
Using different imaging techniques (primarily, magnetic resonance imaging or MRI) as guidance in robotic-assisted brain surgery becomes more and more wide-spread. One of important issues in this area is using these imaging technologies in online mode. For that, robotic devices that are compatible with MRI systems are required. In particular, conven...
Formulations of periodic contact problems for an elastic half-plane and an elastic half-space interacting with a rigid body, having regular microgeometry, and a method for their approximate solution based on the localization principle are proposed. General relations, connecting contact characteristics of the interface (contact pressure distribution...
The deceleration of a viscoelastic cylinder rolling with slipping on a viscoelastic half-space of the same material without driving forces and torques is studied. The interaction of the cylinder and the half-space is described from the solution of the 2D quasistatic contact problem of viscoelasticity (Goryacheva in J Appl Math Mech 37(5):877–885, 1...
Announcement of the new Research Topic "Contact mechanics perspective of tribology" edited by: Irina Goryacheva, Marco Paggi & Valentin L. Popov:
https://www.frontiersin.org/research-topics/11677/contact-mechanics-perspective-of-tribology
The contact of a periodic system of spherical indenters of different heights and radii of curvature with two-layered elastic half-space is considered. Numerical-analytical method is developed to determine contact pressure distribution and internal stresses taking into account mutual effect of contact spots. The results for relatively hard and soft...
The three-dimensional quasi-static contact problem for an elastic sphere rolling over a thin viscoelastic layer bonded to an elastic half-space is considered. The Kelvin model is used to describe the layer viscoelastic properties in tangential direction. The layer compliance in normal direction is described by the modified Winkler model. The contac...
A new fundamental concept for one-step in-situ functionalization of gold nanoparticles (GNPs) with folic acid using hydrothermal treatment is described. Hydrothermal treatment has been tuned to increase the light emission from the pterin moiety of folic acid molecule, while retain its structure and functionality, thus providing a simple route to mu...
A “dry” adhesive, polyimide, with increased adhesion to materials used in spacecraft engineering is synthesized and studied. Its adhesion properties are estimated using the method of force–distance curves on the basis of scanning-probe-microscope functionality. A technique is developed for the deposition of polyimide onto the cantilever probe of a...
Progress of minimally invasive surgery stimulates the development of sensory techniques. The present study is related with creation of a mechatronic clamping laparoscopic device (forceps) that allows transferring tactile sensations from the jaws of the clamp to the handles of the master manipulator operated by surgeon. The user presses the handles...
We report a facile route for the fabrication of thin composite films based on polyelectrolytes and carbon nanostructures. Composite films were made by layer‐by‐layer assembly of polyelectrolyte multilayers utilizing embedded dextran sulfate (Dex) solution as a carbon source. Raman measurements indicate the formation of carbon nanostructures from th...
The deceleration of an infinite rigid cylinder sliding along a surface of a viscoelastic halfspace is studied (the axis of the cylinder at plane-parallel motion is horizontal). It is assumed that there are no tangential stresses in the contact area. The distribution of contact pressures, the size of contact area, and the dependence of resistance fo...
The quasi-static plane-parallel motion of an infinite elastic cylinder along a horizontal foundation made of the same material is studied (the cylinder axis is horizontal). The distribution of normal and tangential stresses in the region of contact interaction between the cylinder and plane is derived from the solution to the problem of the theory...
The plane-parallel indentation of the tool with projections into the homogeneous and inhomogeneous biological tissue is modelled. The linear elastic and two-layer half-spaces are used for tissue modelling. The time-dependence of a force applied to the instrument and dependence of the force on the indentation depth are obtained. The shape of project...
This study presents modeling results on fatigue wear of elastomers. A contact problem solution has been derived for the sliding of a system of asperities over a viscoelastic half-space. The mechanical properties of the viscoelastic half-space are described by relations between stresses and strains given by the Volterra integral operator. The contac...
The effect of residual stresses that arise during the treatment of friction-pair surfaces by various techniques on the rate of damage accumulation caused by contact fatigue is considered for cyclic loading of bodies under rolling friction. It is assumed that the rate of damage accumulation is a function of the peak values of the principal shear str...
Lung cancer is the most frequently occurring malignancy and the leading cause of cancer-related death for men in our country. The only recommended screening method is clinic based low-dose computed tomography (also called a low-dose CT scan, or LDCT). However, the effect of LDCT on overall mortality observed in lung cancer patients is not statistic...
Air pollution is one of the leading causes of deaths in Southeast Asian countries including India. Exposure to air pollutants affects vital cellular mechanisms and is intimately linked with the etiology of a number of chronic diseases. Earlier work from our laboratory has shown that airborne particulate matter disturbs the mitochondrial machinery a...
The paper presents the results of investigation of surfaces with high adhesive ability to materials used in space technology. The object of the study was the so – called "dry" adhesive-polyimide. A method based on the use of the functionality of a scanning probe microscope was applied to estimate its adhesion properties. The method of applying poly...
The effect of nanostructures of low-modulus carbon fibers and the properties of the epoxy matrix of antifriction carbon plastics on the processes occurring during frictional interaction with stainless steel in an aqueous medium is considered. The reasons for high tribological characteristics of antifriction carbon plastics based on low-modulus carb...
Tooth surfaces of silicon-based MEMS microgears are described as smooth surfaces covered by adhesive asperities (nanoblocks). To reduce adhesive effects, the tooth surfaces are functionalized by OTS-SAM (Octadecyltrichlorosilane self-assembly monomolecular) carbon-based functionalized coatings. The wear of the coating is modelled using the modified...
For the first time, the dynamic problem of plane-parallel rolling with the slip of an elastic cylinder along an elastic base of the same material is analyzed. The distribution of the normal and tangential stresses in the contact-interaction region consisting of relative slip and stick subregions corresponds to the solution of the quasi-static probl...
An approach to account the surface relief in normal contact problems for rough bodies on the basis of an additional displacement function for asperities is considered. The method and analytic expressions for calculating the additional displacement function for one-scale and two-scale wavy relief are presented. The influence of the microrelief geome...
Some models of a sliding contact of the surfaces with periodic microgeometry over a viscoelastic body are presented. The various gap conditions, such as complete contact, boundary friction, and the contact of dry surfaces with adhesive interaction, are considered. Based on the analytical or semi-analytical solutions of the periodic contact problems...
In this study, models are proposed to analyze the combined effect of surface microgeometry and adhesion on the load–distance dependence and energy dissipation in an approach–separation cycle, as well as on the formation and rupture of adhesive bridges during friction. The models are based on the Maugis–Dugdale approximation in normal and frictional...
Background
A new sensor for estimating elasticity of soft tissues such as a liver was developed for minimally invasive surgery application.
Methods
By measuring deformation and adjusting internal pressure of the pneumatic sensor head, the sensor can be used to do palpation (indentation) of tissues with wide range of stiffness. A video camera insta...
The solution of the problem of interaction with regard to the forces of adhesive (molecular) attraction of two nominally plane half-spaces one of which is elastic and the surface of the other has a regular relief is presented. The surface mutual approach dependence on the applied nominal pressure and the effective specific work of adhesion are anal...
Sliding contact of a smooth indenter with a linear viscoelastic layer adhered to a rigid half-space is under consideration. The quasistatic problem is investigated by constructing a solution for the case of a moving load, distributed in a rectangular element, which allows us to use the boundary element method and iterative procedure. The effect of...
A video tactile sensor is considered as a working instrument of medical robot. A problem of the contact of the silicon head of the tactile sensor with a multilayer soft tissue is considered. For contact with the two-layer tissue analytical dependencies of the load and the radius of contact on time are given for small values of indentation speed. Th...
A simulation of a contact interaction of the indenter and inhomogeneous soft biological tissues is carried out. The soft tissue is modeled by the incompressible elastic body which contains structural inhomogeneities (spherical or longitudinal inclusions). The elastic moduli of inclusions are higher than the bulk soft tissue modulus. These inclusion...
The paper treats in brief trends in development of tribology (a concept formulated by Peter Jost) in the half-centennial period, setting a stress on the research history of friction, lubrication and wear processes along with their role in engineering and social life. Actuality of the new tribological trends is stated in economy of energy and materi...
The article is devoted to the overview of the indicators (criteria) of tribosystem compatibility proposed by N..Bushe and their further development. Temperature criterion of compatibility and response of the tribosystem to tightening of the friction modes characteristic for running in regime are described. Materials compatibility indices and ways t...
For a multilayer elastic half-space, we consider an axisymmetric loading model taking into account damage on the interface between the layers. The influence of intermediate layers arising in various coating technologies on the contact and internal stresses occurring in the coating and the substrate under elastic indentation conditions is studied fo...
A model for calculating the dependence of the amount of solid lubricant formed on the surface of a multicomponent aluminum alloy in friction is proposed. The constructed model is applied to analyze how the properties of the matrix and soft structural components as well as the alloy structure influence the amount of the soft phase transferred to the...
A method is proposed for the analytical solution of problems of the sliding of a punch with a periodic relief on a viscoelastic half-plane under conditions when they are in complete contact as well as problems on the loading of a viscoelastic half-plane with a piecewise-constant pressure that moves at a constant velocity on its surface. The problem...
The spatial contact problem of the sliding, at a constant velocity, of a smooth indentor along the boundary of a viscoelastic half-space is considered. Shear stresses, related to the contact pressure by the Coulomb–Amonton friction law and due to surface adhesion interaction forces, act in the contact area. Shear deformation of the base is describe...
Data on the wear tests of the material of a heat exchange tube and a spacer grid of the steam generator of the BREST-OD-300 nuclear reactor plant performed at a high temperature in argon atmosphere are presented. A mathematical model of the wear process based on which the identification of the corresponding wear law is carried out has been proposed...