The Effect of a Fluid in the Contact Gap on the Stress State of Conjugate Bodies

Кіт, Г. С.; Martynyak, R. M.; Machishin, I. M.

doi:10.1023/a:1024414302961

Cited by 20 publications

(11 citation statements)

References 9 publications

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“…Quite often inclusions are used as structural elements for the reinforcement of machine parts and structures, including as filler composites. One of the characteristic examples of composition material are stratified structures, peculiar to soils (Sekine, 1982;Kit et al, 2003;Ostryk and Ulitko, 2006). Such subtle structural heterogeneity has a complex structure considering possible viscosity, plasticity and other nonlinear effects.…”

Section: Introductionmentioning

confidence: 99%

Antiplane Deformation of a Bimaterial with Thin Interfacial Nonlinear Elastic Inclusion

Sulym

Piskozub

Polański

2018

Acta Mechanica Et Automatica

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The problem of longitudinal shear of bimaterial with thin nonlinear elastic inclusion at the interface of matrix materials is considered. Solution of the problem is constructed using the boundary value problem of combining analytical functions and jump functions method. The model of the thin inclusion with nonlinear resilient parameters is built. Solution of the problem is reduced to a system of singular integral equations with variable coefficients. The convergent iterative method for solving such a system is offered for various nonlinear strain models, including Ramberg-Osgood law. Numerical calculations are carried out for different values of non-linearity characteristic parameters for the inclusion material. Their parameters are analysed for the tensely-deformed matrix under loading a uniformly distributed shear stresses and for a balanced system of the concentrated forces.

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Section: Introductionmentioning

confidence: 99%

Antiplane Deformation of a Bimaterial with Thin Interfacial Nonlinear Elastic Inclusion

Sulym

Piskozub

Polański

2018

Acta Mechanica Et Automatica

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“…Rarely the problems for cracks with uniformly distributed tractions (internal pressure) or concentrated forces applied at their faces are considered. The solution of the problems of first kind are important in the analysis of stress strain state near the oil or gas layers (Kit et al, 2003;Evtushenko and Sulym, 1981), mechanical influence of hydrogen, which due to high permeability and mobility migrates into the material cavities, thus, creating there high pressure and debond adhesive joints in the material, increasing defects size. The solution of the second kind has not only the applied value, but also serve as Green's functions, thus allows deriving the solutions of the problems with loadings arbitrarily applied at crack faces.…”

Section: Introductionmentioning

confidence: 99%

Antiplane Deformation of a Bimaterial Containing an Interfacial Crack with the Account of Friction I. Single Loading

Sulym

Piskozub

et al. 2015

Acta Mechanica Et Automatica

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The paper presents the exact analytic solution to the antiplane problem for a non-homogeneous bimaterial medium containing closed interfacial cracks, which faces can move relatively to each other with dry friction. The medium is subjected to the action of normal and arbitrary single loading in a longitudinal direction. Based on the discontinuity function method the problem is reduced to the solution of the system of singular integral-differential equations for stress and displacement discontinuities at the possible slippage zones. Influence of loading parameters and the effects of friction on the sizes of these zones is analyzed. The stress intensity factors, stress and displacement discontinuities, energy dissipation are determined for several characteristic types of external loading.

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“…A matched contact is inherent in the "internal" contact problems such as a shaft fit in a bush with a small gap [82]. Under loading, the contact region quickly expands and may become comparable with the characteristic dimensions of the contacting bodies.…”

Section: Collision Processes For Matched Surfacesmentioning

confidence: 99%

Impact of blunted bodies on a liquid or elastic medium

Kubenko

2004

Int Appl Mech

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The impact interaction between a solid body and a liquid or elastic half-space and between two elastic bodies is analyzed. The main approaches and representative numerical results are set out.Introduction. The present review analyzes and generalizes the results from studies of the interaction between a body and a liquid, a body and an elastic medium, and between two deformable bodies, which are originally undeformed and come into contact at some initial moment. We will consider an impact of blunted bodies, namely, the initial stage of penetration of bodies with a smoothly curved surface into a medium. By penetration is usually meant a set of mechanical phenomena accompanying an impact of a moving body on the surface of a medium, followed by immersion into it. The forces of resistance exerted by the medium on the body are, as a rule, much greater than the forces that move the body prior to the impact. Penetrating bodies, especially those with the frontal part blunted, usually suffer maximum loads at the early stage of penetration. In this connection, it is important to analyze the impact interaction of penetrating (colliding) bodies and structural members.Solid-fluid impact theory came to be developed intensively in the 1930s of the 20th century in connection with water-landing studies. Later, similar studies were conducted in shipbuilding (slamming of high-speed vehicles), in new branches of mechanical engineering (impact of solids or liquid particles on structural members), in space engineering (splash-down (landing) of descent modules), etc. The general problem of impact of a body on a liquid (medium) is extremely complex, since the penetration process is accompanied by a variety of phenomena such as large strains of the body and medium, breaking of the medium surface, splash and jet formation, discontinuous flows, entrainment of the air space, cavitation, moving unknown boundaries, etc. The complete nonlinear analysis of the penetration of a structural member into a liquid is hardly feasible. Therefore, common practice is to isolate the most significant aspects from the general formulation of the problem, leaving less important factors aside. Note that we do not address numerical methods here (they are discussed, e.g., in [2]).Historically, there are several approaches to the problem in question. The earliest approach is to consider the medium as a perfect incompressible liquid. The first approaches due to Von Carman and Sedov, which helped to solve many applied problems, described the process globally. However, a researcher or an engineer often needs to know not only integral but also other characteristics such as contact pressure, stress-strain state at some (frontal) points or in the whole body, liquid velocity fields, etc. In this case, the problem needs a more rigorous formulation. One was proposed by Wagner [98] (modeling penetration as an impact on a floating rigid plate) and used as the basis for many research projects. Logvinovich [67] established the applicability limits for Wagner's theory, solved t...

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The Effect of a Fluid in the Contact Gap on the Stress State of Conjugate Bodies

Cited by 20 publications

References 9 publications

Antiplane Deformation of a Bimaterial with Thin Interfacial Nonlinear Elastic Inclusion

Antiplane Deformation of a Bimaterial with Thin Interfacial Nonlinear Elastic Inclusion

Antiplane Deformation of a Bimaterial Containing an Interfacial Crack with the Account of Friction I. Single Loading

Impact of blunted bodies on a liquid or elastic medium

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