A semi-analytical method for analys of contact interaction between structural elements along aligned surfaces

Tkachuk, Mykola; Grabovskiy, Andrey; Saverska, Mariia; Hrechka, Iryna

doi:10.15587/1729-4061.2020.193985

Cited by 14 publications

(3 citation statements)

References 39 publications

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“…The research methodology extends the approach proposed in [28]. It was applied to analyze contact interaction between the spherical piston and toroidal running track on the stator of a hydrovolumetric drive GOP-900 [3].…”

Section: Methodsmentioning

confidence: 99%

“…It may be concluded that adequate analysis of contact interaction with intermediate layers requires a rigorous combination of micro and macro models. An approach that implements such integration of the two models was proposed in [28]. The application of FEM or BEM governs the macrolevel while the microscopic response is represented as an effective Winkler layer.…”

Section: Literature Reviewmentioning

confidence: 99%

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Contact Interaction of a Ball Piston and a Running Track in a Hydrovolumetric Transmission with Intermediate Deformable Surface Layers

Tkachuk¹,

Grabovskiy²,

Hrechka³

et al. 2021

Lecture Notes in Mechanical Engineering

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The properties of surface layers need to be accounted for in the analysis of contact interaction of complex-shaped bodies. Surface roughness, films, and coatings provide an additional response to the contact tractions. These microscopic deformations are generally nonlinear. To constitute the relationship between the contact pressure and normal compression of the intermediate layers, an ad hoc model is proposed. It consists of two superimposed layers on one side of the contact. Each layer has a different elasticity modulus and stiffness. As a result, the thicker later gets into contact sooner than the thinner one, which only comes into play after a certain loading level. This approach makes it possible to model an arbitrary bilinear response of the contact interface effectively using the finite element method. This model is applied to the analysis of contact interaction in radial hydrovolumetric drive with spherical pistons. The effect of layer stiffness parameters on the contact pressure distribution and the local stresses in the bodies is studied. The ability of additional compliance to reduce the stresses is found to be useful for further improvement of the strength of the pistons, which is crucial for the design.

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Section: Methodsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Contact Interaction of a Ball Piston and a Running Track in a Hydrovolumetric Transmission with Intermediate Deformable Surface Layers

Tkachuk¹,

Grabovskiy²,

Hrechka³

et al. 2021

Lecture Notes in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…The proposed criterion allows evaluating the technical level of hydraulic devices, depending on their design and operational parameters. It can be done at the CAD (Computer-aided design) stage [46]- [49]. This criterion is based on common methodological principles based on the data given in the relevant directories or technical specifications for the design of the product.…”

Section: Definitive Assessment Criterion Of Technical Levelmentioning

confidence: 99%

Untitled

2021

JMechE

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A basic purpose of a good healing patch is to reduce the reproduction of bacteria in the wounded area with minimal effect of mechanical properties. This study focuses on the basic mechanical and biomechanical properties of the material for a healing patch application with a new composition of biodegradable ingredients by using the estimation of hyperelastic models to fit with the experimental data and the comparison between the commercial Aloe vera gels and original Aloe vera leaves. This project was started with a material selection which is gelatine and Aloe vera leaves as the main ingredient. Secondly, the specimen sets undergo a uniaxial tensile test to obtain the raw data. For numerical phases, the conventional theory of large deformation based on hyperelastic constitutive equations and Stress-Strain Energy Theory were identified. The final step for this project is curve fitting between experimental data (Ogden and Mooney-Rivlin hyperelastic models). New parameters were carried out for healing patch materials made of hybrid biomaterials from the hyperelastic theory. The Ogden and Mooney Rivlin trends were closely followed by the curve fit presented with a minor difference. Overall, the original Aloe vera leaves' values were Ogden (α=1.8792, µ=0.1881 Mpa) and Mooney-Rivlin (C1=0.0713, C2=0.0304) respectively. The significance of this project is to expand the knowledge about mechanical properties of natural polymers for wound healing application instead of depending on semi-synthetic polymers.

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Computational–Experimental Evaluation of Stiffness Response in Elastic Supports of Rotor Systems

Tkachuk

Grabovskiy

Shut

2021

Advanced Structured Materials

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A semi-analytical method for analys of contact interaction between structural elements along aligned surfaces

Cited by 14 publications

References 39 publications

Contact Interaction of a Ball Piston and a Running Track in a Hydrovolumetric Transmission with Intermediate Deformable Surface Layers

Contact Interaction of a Ball Piston and a Running Track in a Hydrovolumetric Transmission with Intermediate Deformable Surface Layers

Untitled

Computational–Experimental Evaluation of Stiffness Response in Elastic Supports of Rotor Systems

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