Yury Vladimirovich Khalevitskiy

• Specialist
• Retired at Russian Academy of Sciences

The paper deals with modeling elastic-plastic deformation of dissimilar AISI 321/Cu/Ti laser joint which is being upset under the plane strain conditions. The joint is considered to be a composite with six constituents: 1 - steel AISI 321, 2 – diffusion zone at the steel/Сu interface (DZ1), 3 – Cu-based solid solution of melting zone (MZ), 4 – Fe-b...

Computational models of representative volumes of metal matrix composites are crucial for investigating material behavior on the microscale. Numerical simulations often employ finite element models of representative volumes. Such models are based on observations of material microstructural properties, for example, by means of electron microscopy. C...

We present a computational model of the deformation process of a metal matrix composite representative volume. The composite is manufactured by sintering AlMg6 alloy particles with 10 vol.% of SiC particle reinforcement. Due to the manufacturing process, the composite features a microscopic cellular structure: silicon carbide particles enclose alum...

Simulation of the process of deformation of heterophase media is necessary for substantiating technological processes of composite forming. Representative volumes of the materials are modeled by a conglomerate of elastic and elastoplastic bodies. Numerical implementations of the models typically use the finite element method (FEM). As a part of the...

The paper presents modeling of the tension of a laser weld, produced by carbon dioxide laser, on the AISI 321 steel and the Grade 2 titanium alloy with a copper insert. A finite element model in the ANSYS environment is used for the modeling, which describes the actual weld geometry and phase composition. The influence of intermetallics on the redi...

Plastic deformation and fracture of Al/SiC metal matrix composite have been numerically simulated in three mechanical tests (tension, compression, shear) with account for the microstructure and rheology of the composite components. A description is given of the formation mechanisms of stress concentration zones and local plastic deformation zones w...

In the paper we develop a computational model of plastic deformation of an aluminum matrix composite. The composite is produced by sintering, and it has a cellular microstructure. SiC reinforcement particles form a stratum along the pellet boundaries of the V95 (analogous to 7075) aluminum alloy. The effective properties of the plastic flow of the...

Applying the finite element method to severe plastic deformation problems involves solving linear equation systems. While the solution procedure is relatively hard to parallelize and computationally intensive by itself, a long series of large scale systems need to be solved for each problem. When dealing with fine computational meshes, such as in t...

A three-dimensional model for deformation of metal matrix composite with aluminum matrix and silicon carbide reinforcement particles is developed. The model accounts for an internal structure of the composite, as well as rheology of its constituents. The model is further used in numerical simulations in order to study the evolution of stress-strain...

On the example of an Al/SiC metal matrix composite, we propose a numerical study of multiphase material stress-strain response evolution using the structural-phenomenological approach. The study covers micro- and macrolevel analyses of uniaxial tension and compression and takes material rheology and internal structure into consideration. We describ...

As a part of the finite element procedure, it is necessary to solve a system of simultaneous linear algebraic equations. A simulation with a sophisticated material model and a fine mesh requires using an iterative linear solver executed on a grid of computational accelerators. Most of modern iterative methods for linear systems are based on Krylov...

When modeling deformation process by the finite element method (FEM), it is necessary to solve a system of simultaneous linear algebraic equations (SLAE) with a large sparse matrix. In addition to the high computational complexity of the linear system solution process, obtaining a system matrix from a finite element model also demands significant c...

Describing structurally inhomogeneous materials as complex hierarchical systems allows deriving a consistent pattern of stress-strain state related to history dependence of damage evolution. In this work we use a random microstructure subvolume to describe a methodology of a numerical study of stress-strain response evolution of a structurally inho...