E. I. Kraus
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View article: Numerical Modelling of High-Speed Loading of Periodic Interpenetrating Heterogeneous Media with Adapted Mesostructure
Numerical Modelling of High-Speed Loading of Periodic Interpenetrating Heterogeneous Media with Adapted Mesostructure Open
A series of calculations has been conducted to study the high-speed interaction of space debris (SD) particles with screens of finite thickness. For the first time, taking into account the fracture effects, a numerical solution has been ob…
View article: Simulation of a Group Impact on a Heterogeneous Target of Finite Thickness
Simulation of a Group Impact on a Heterogeneous Target of Finite Thickness Open
Numerical simulation of the processes of high-speed loading of homogeneous and heteroge- neous targets by single projectiles, as well as by a group of projectiles with the same parameters in mass and momentum, has been carried out. Based o…
View article: Influence of material failure criteria on the results of solids impact simulation
Influence of material failure criteria on the results of solids impact simulation Open
A series of collisions of metal cylinders made of model materials has been simulated. Only one fracture criterion was left in each model material, responsible for one fracture mechanism. It is shown that it is impossible to obtain a physic…
View article: Modelling the destruction process of a thermal reactor by man-made space debris impact
Modelling the destruction process of a thermal reactor by man-made space debris impact Open
The three-dimensional transient problem of the interaction of artificial space debris particles (steel bolt M12) with a spacecraft model reactor is solved. Two cases of interaction are considered, the first is the reactor filled with water…
View article: Numerical simulation of the high-speed interaction of a spherical impactor with a system of spaced heterogeneous plates
Numerical simulation of the high-speed interaction of a spherical impactor with a system of spaced heterogeneous plates Open
A 3D non-stationary problem of the interaction of space debris spherical particle and spaced protective screens is considered. To verify the 3D code, a series of calculations was performed of the impact of a spherical impactor made of ShKh…
View article: Comparison of the resistance of monolithic and layered heterogeneous barriers to penetration by rigid and deformable strikers with an ogival nose based on numerical simulation
Comparison of the resistance of monolithic and layered heterogeneous barriers to penetration by rigid and deformable strikers with an ogival nose based on numerical simulation Open
To create protective elements, information is needed on the resistance of various combinations of metal, ceramic, and heterogeneous plates, including layered ones, both in contact and with spacing. In addition, an intensive process is unde…
View article: Melting behind the front of the shock wave
Melting behind the front of the shock wave Open
A simple caloric model of the equation of state is proposed to describe thermodynamic properties of solid materials with phase transitions with the minimum number of parameters as initial data. Thermodynamic characteristics are calculated …
View article: The shock wave compaction of ceramic powders
The shock wave compaction of ceramic powders Open
Joint theoretical and experimental investigations have allowed to realize an approach with use of mathematical and physical modeling of processes of a shock wave compaction of ceramic powders. The aim of this study was to obtain a durable …
View article: Modelling of the processes of impact of a projectile with elements of individual defence
Modelling of the processes of impact of a projectile with elements of individual defence Open
A two-dimensional and three-dimensional non-stationary problem of the interaction of a homogeneous impactor and a heterogeneous structure made of steel and ceramics and placed in a Kevlar pocket is considered. The model of the human body i…
View article: Explosive compaction of aluminum oxide modified by multiwall carbon nanotubes
Explosive compaction of aluminum oxide modified by multiwall carbon nanotubes Open
This paper presents experiments and numerical research on explosive compaction of aluminum oxide powder modified by multiwall carbon nanotubes (MWCNT) and modeling of the stress state behind the shock front at shock loading. The aim of thi…
View article: Numerical simulation of deformation and failure processes of a complex technical object under impact loading
Numerical simulation of deformation and failure processes of a complex technical object under impact loading Open
The main points of development of numerical tools for simulation of deformation and failure of complex technical objects under nonstationary conditions of extreme loading are presented. The possibility of extending the dynamic method for c…
View article: Simulation of fracture in 3D dynamic problems of collision of solid bodies
Simulation of fracture in 3D dynamic problems of collision of solid bodies Open
The results of numerical modeling of three approaches to the process of failure under impact loading of metal barriers in the spatial case are compared. In the first case, the cell with the destroyed material was replaced by a point partic…
View article: Modeling of penetration of gradient metal-ceramic barriers with finite thickness
Modeling of penetration of gradient metal-ceramic barriers with finite thickness Open
Based on the distribution of material concentrations according to a given law within the volume, model heterogeneous and gradient media are constructed for numerical modeling of processes of their deformation and destruction under impact l…
View article: Investigation of the effects of space debris on the elements of thermal regime systems of spacecraft
Investigation of the effects of space debris on the elements of thermal regime systems of spacecraft Open
Deformation and destruction of a tubular heat exchanger, included in the thermal control system of spacecraft, as well as its elements, when impacted by particles of technogenic space debris is simulated. The calculations showed that a hig…
View article: Numerical modeling of deformation and fracture of condensed media under impact loading
Numerical modeling of deformation and fracture of condensed media under impact loading Open
The main points of constructing a numerical model of complex technical objects are considered. The formulation of the problem of shock loading of solids is given. Examples are given of modeling both the low-speed collision of a model react…
View article: Numerical analysis of wave propagation in a cermet composite
Numerical analysis of wave propagation in a cermet composite Open
The results of numerical simulation of the propagation process of elastic-plastic compression waves during deceleration of a cermet composite by one-dimensional loading scheme are presented. The cermet composite is considered as a mixture …
View article: The fabrication of boron carbide compacts by explosive consolidation
The fabrication of boron carbide compacts by explosive consolidation Open
This paper presents experiments on explosive compaction of boron carbide powder and modeling of the stress state behind the shock front at shock loading. The aim of this study was to obtain a durable low-porosity compact sample. The explos…
View article: A few-parameter equation of state of the condensed matter
A few-parameter equation of state of the condensed matter Open
A simple caloric equation-of-state model is proposed to describe thermodynamic properties of solid materials without phase transitions with the minimum number of parameters as initial data. The thermal vibrations of the crystal lattice are…
View article: Calculation of elastic modules behind strong shock wave
Calculation of elastic modules behind strong shock wave Open
As part of a unified system of the few-parameter equation of state, an approach is implemented to calculate the mechanical properties of materials behind the front of strong shock waves. For aluminum and copper, the results of calculations…
View article: Explosive compaction of WC+Co mixture by axisymmetric scheme
Explosive compaction of WC+Co mixture by axisymmetric scheme Open
This paper is devoted to the problem of development and optimization of schemes for explosive compaction of mixtures of solid powder materials with metal bond. For this purpose, experiments were conducted on explosive compaction of mixture…