Математика и физика. Mathematics & Physics. 2021 14 (6)
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Molecular-dynamic Investigation of Silicon Carbide Fracture Under External Mechanical Loads
(Сибирский федеральный университет. Siberian Federal University, 2021-11)In this study, molecular dynamic simulations of quasi-static compression of silicon carbide nanorod, were performed. A longitudinal through defect in the form of a cylindrical channel was in- troduced into the central ... -
Fracture of Protective Structures from Heavy Reinforcing Cement During Interaction with High-velocity Impactor
(Сибирский федеральный университет. Siberian Federal University, 2021-11)In this work, the fracture of a reinforced concrete barrier made of heavy reinforced ce- ment is numerically simulated during normal interaction with a high-velocity titanium projectile. The projectile has the initial ... -
Explicit-Implicit Schemes for Calculating the Dynamics of Layered Media with Nonlinear Conditions at Contact Boundaries
(Сибирский федеральный университет. Siberian Federal University, 2021-11)In this paper we consider the problem of dynamic loading of a deformable solid medium con- taining slip planes with nonlinear slip conditions on them. An explicit-implicit scheme was constructed for the numerical solution ... -
On the Parallel Kinematics of the FET Stretching Press in the Stretch Forming Operations in the Manufacture of Parts with Complex Spatial Geometry
(Сибирский федеральный университет. Siberian Federal University, 2021-11)The kinematics of a stretching press mechanism of a parallel structure are investigated. The kinematic dependences aimed at setting the spatial position of the working elements of a cross-stretching press of FET type, ... -
Simulation of a Group Impact on a Heterogeneous Target of Finite Thickness
(Сибирский федеральный университет. Siberian Federal University, 2021-11)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 ... -
Cyclic Behavior of Simple Models in Hypoplasticity and Plasticity with Nonlinear Kinematic Hardening
(Сибирский федеральный университет. Siberian Federal University, 2021-11)The paper gives insights into modeling and well-posedness analysis driven by cyclic behavior of particular rate-independent constitutive equations based on the framework of hypoplasticity and on the elastoplastic concept ... -
Construction of Nonsingular Stress Fields for Non-Euclidean Model in Planar Deformations
(Сибирский федеральный университет. Siberian Federal University, 2021-11)A material with a microstructure is considered. A material is described on the basis of a non-Euclidean model of a continuous medium. In equilibrium, the total stress field is represented as the sum of elastic and ... -
Modeling of Surface Fracture in Friction Interaction of Fiber Composites
(Сибирский федеральный университет. Siberian Federal University, 2021-11)The model of the frictional interaction of a fiber composite material with a rigid non- wearing body is proposed, which makes it possible to study the effect of the mechanical and strength characteristics of the fiber ... -
Thawing of Permafrost During the Operation of Wells of North-Mukerkamyl Oil and Gas Field
(Сибирский федеральный университет. Siberian Federal University, 2021-11)Thawing of ice-saturated rocks due to climate change or various technological impacts will be accompanied by subsidence of the earth’s surface and development of dangerous permafrost geological processes called thermokarst, ... -
Numerical Modelling of Compression Cure High-Filled Polimer Material
(Сибирский федеральный университет. Siberian Federal University, 2021-11)The article presents phenomenological constitutive relations for modeling the compression curing of a highly filled polymer medium, obtained in the framework of the mechanics of an almost incompressible viscoelastic solid ... -
Simulation of Thermoplastic Powder Cold Spraying
(Сибирский федеральный университет. Siberian Federal University, 2021-11)The work is devoted to the deposition of composite powder materials by cold spray method. As a spraying material, a thermoplastic compound «WAY» for marking the roadway was used. An asphalt concrete was used as a substrate. ... -
Modelling and Simulation of Deformation and Failure of Reinforced Concrete Beams under Four-Point Bending
(Сибирский федеральный университет. Siberian Federal University, 2021-11)A new mathematical model for the four-point bending of reinforced concrete beams is developed and investigated. The model takes into account multi-modulus concrete behavior, nonlinear stress-strain relationships, and ... -
Computer Modeling Deformation of Porous Elastoplastic Materials and Identification their Characteristics Using the Principle of Three-dimensional Similarity
(Сибирский федеральный университет. Siberian Federal University, 2021-11)It is proposed to numerically model large deformations of porous specimens, using the 3D- similarity principle in structural elements, which makes it possible to account for the inhomogeneity of the stress-strain state ... -
Numerical Simulation of the Fused Deposition Modeling for the Manufacturing of Parts with both High Geometric Fidelity and Mechanical Quality
(Сибирский федеральный университет. Siberian Federal University, 2021-11)With increasing usage of additive manufacturing methods for mechanical parts the need for precise and reliable simulations of the manufacturing process increases as well. In this paper various com- putations suited for ...