STRESS-STRAIN STATE MODELING OF ELASTOMERIC LINING

UDC 678.4.66:621.81

Authors:

Yurechko V.Z., M.S (Tech.),

Bova A.A., M.S (Tech.) (ZNTU)

Kalgankov Ye.V., Doctoral Student,

Tsanidy I.N., Doctoral Student,

Novikova A.V., M.S. (Tech) (IGTM NAS of Ukraine)

Abstract.

In this paper the mathematical model of the deformation process of elastomeric elements of constructions with regard abrasive fatigue failure has been proposed. To construct the model a three-dimensional finite element method has been used. Due to the specific properties of material the stiffness matrix of finite element based on the finite element moment scheme for weakly compressible materials, including a triple approximation of components of the displacement vector, the strain tensor components and functions of the volume change, has been constructed. To increase the accuracy of solutions has been envisaged the receipt of expressions for deformations on the base of adding the initial linear approximating polynomial to complete cubic polynomial. To account the abrasive fatigue wear the macroscopic characteristic has been built in the form of effective modulus of elasticity of rubber with the damage that can be modeled inclusions with properties different from the initial material. The numerical convergence of proposed finite element model with cubic approximation of displacements has been studied on the example of solution of Lyame task for hollow elastic cylinder. The proposed mathematical model has been numerically implemented in computationally complex “MІRELA+”. The rubber lining of drum-balls ore shredding mills was calculated taking in the account the specific properties of material and the deformation conditions. The basic parameters of the stress-strain state of lining have been obtained depending on the applied load and the applicable stamps of rubber.

Keywords:

the elastomers, rubber lining, abrasive fatigue wear, finite element moment scheme

References:

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About the authors:

Jurechko Vasily Zinov’evich, Master of Science, assistant of the department of information technologies in tourism Zaporozhye National Technical University, Zaporozhye, Ukraine, Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

Bova Anna Anatol’evna, Master of Science, assistant of the department of system analysis and computational mathematics Zaporozhye National Technical University, Zaporozhye, Ukraine, Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

Kalgankov Evgeniy Vasilyevich, Doctoral Student in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

Tsanidy Ivan Nikolaevich, Doctoral Student in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.

Novikova Alina Vyacheslavovna, Master of Science, Junior Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Этот адрес электронной почты защищен от спам-ботов. У вас должен быть включен JavaScript для просмотра.