Рейтингові публікаціі

D. V. Breslavsky, O. K. Morachkovsky, O. A. Tatarinova: (Citations:1)view publication

We present a method for solving problems of high-temperature cyclic creep and damage accumulation in structural elements. The asymptotic expansion and averaging techniques both over the period of forced vibrations of a body and that of slowly varying loads are used for the set of equations describing the creep and damage processes in thin-walled structural elements.

Journal: Strength of Materials – STRENGTH MATER-ENGL TR, vol. 40, no. 5, pp. 531-537, 2008

H. Altenbach, G. Kolarow, O. K. Morachkovsky, K. Naumenko: (Citations:6)view publication

The constitutive model with a single damage parameter describing creep-damage behaviour of metals with respect to the different sensitivity of the damage process due to tension and compression is incorporated into the ANSYS finite element code by modifying the user defined creep material subroutine. The procedure is verified by comparison with solutions for beams and rectangular plates in bending …

Journal: Computational Mechanics – COMPUTATION MECH, vol. 25, no. 1, pp. 87-98, 2000

H Altenbach, D Breslavsky, O Morachkovsky, K Naumenko: (Citations:1)view publication

Journal: Journal of Strain Analysis for Engineering Design – J STRAIN ANAL ENG DESIGN, vol. 35, no. 1, pp. 1-11, 2000

H. Altenbach, O. Morachkovsky, K. Naumenko, A. Sychov: (Citations:11)view publication

Summary A phenomenological constitutive model for characterization of creep and damage processes in metals is applied to the simulation of mechanical behaviour of thin-walled shells and plates. Basic equations of the shell theory are formulated with geometrical nonlinearities at finite time-dependent deflections of shells and plates in moderate bending. Numerical solutions of initial/boundary-value problems have been …

Journal: Archive of Applied Mechanics – ARCH APPL MECH, vol. 67, no. 5, pp. 339-352, 1997

H. Altenbach, G. Kolarow, O. K. Morachkovsky, K. Naumenko: (Citations:6)view publication

The constitutive model with a single damage parameter describing creep-damage behaviour of metals with respect to the different sensitivity of the damage process due to tension and compression is incorporated into the ANSYS finite element code by modifying the user defined creep material subroutine. The procedure is verified by comparison with solutions for beams and rectangular plates in bending …

Journal: Computational Mechanics – COMPUTATION MECH, vol. 25, no. 1, pp. 87-98, 2000

V. Kushnevsky, O. Morachkovsky, H. Altenbach: view publication

For the determination of effective elastic properties an energy averaging procedure has been used for particle reinforced composite materials. This procedure is based on finite element calculations of the deformation energy of a characteristic volume element. The proposed approach allows the determination of effective properties of particle reinforced composite with acceptable precision. The calculated effective properties of the composite are …

Journal: Computational Mechanics – COMPUTATION MECH, vol. 22, no. 4, pp. 317-325, 1998

: (Citations:2) view publication 

Different zones of welded joints are subjected to different temperature fields during the process of welding. Furthermore, in multi-pass welding, heating and cooling cycles, which occur due to the overlap of the pass beads, lead to the formation of complex microstructures. A method of evaluating the creep response of a multipass weld based on the micromacro mechanics approach is introduced. Multipass weld microstructures consisting of a columnar zone, which can be related to the microstructure of a single pass weld, and a heat affected zones are considered. To model the microstructure of the multipass weld metal the representative volume element (RVE) method is employed. Numerical tests on one-component loading of the RVEs are performed and creep material properties for equivalent weld material reported for welds with different number of passes.

Journal: Materials Science and Technology Volume 30, 2014 – Issue 1, pp. 50-53, 2013

D. V. LavinskiiO. K. Morachkovskiiview publication

A formulation is presented for the problem of elastoplastic deformation of the system of electrically conductive bodies under the action of pulsed electromagnetic field. The numerical technique for solving the problem is based on the finite element method. Deformation of bodies interacting through contact during the pulsed magnetic treatment of materials is analyzed. The influence of the manufacturing and design parameters of the inductor–workpiece system on its stress-strain state is investigated.

Journal: Strength of MaterialsVolume 48, Issue 6pp 760–767, 2016

H. Altenbach, O. Morachkovsky, K. Naumenko, D. Lavinsky: view publication

Inelastic deformation of conductive bodies under the action of electromagnetic fields is analyzed. Governing equations for non-stationary electromagnetic field propagation and elastic–plastic deformation are presented. The variational principle of minimum of the total energy is applied to formulate the numerical solution procedure by the finite element method. With the proposed method, distributions of vector characteristics of the electromagnetic field and tensor characteristics of the deformation process are illustrated for the inductor–workpiece system within a realistic electromagnetic forming process.

Journal: Continuum Mechanics and ThermodynamicsVolume 28, Issue 5pp 1421–1433, 2016

S. Bondar, D. Lavinskii:  view publication

A calculation technique based on the unified methodological approach is proposed for the analysis of thermoelastoplastic contact deformation of mixed structures. The proposed numerical technique involves the finite element method. The problem of stress-strain state evaluation for one class of mixed shrouded half-hot extrusion dies is considered. Recommendations on production tooling design are given.

Journal: Strength of Materials, Volume 43: 447, 2011