Physics, mathematics, and technology

2009 Issue №10

Optimization of Repeatability Injured Backbone with the Help of Rigid Laminas on the Basis of a Mathematical Model of a Three-Vertebra System

Abstract

For backbone complex of the human’s spine with alternative of a cuneiform strain mean backbone the stabilizing rigid lamina (for front and
back abutment complexes) holds optimization of stiffness of stabilizing of a lamina Ссt1 on an objective function of offset 2 backbone, at its sufficient mobility.

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Modeling of Wave Processes in High Speed Impacts with Smoothed Particle Hydrodynamics Method

Abstract

Concerned issues are related to the modeling of high speed impact with different variants of the smoothed particle hydrodynamics method and applying this method to the solution of problems of mechanics of the deformed solid body.Results of solution of the problem of disintegration of discontinuity were obtained and comparative analysis was performed.

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Modeling of H Thermal Ions Measurements onboard Charged Satellite Taking into Account Anisotropy of Temperature

Abstract

The mass-spectrometer model of thermal ionospheric ions measurements was considered in case of charged satellite. Hyperboloid device characteristics onboard Interball-2 satellite was used for mathematical model of measurements. It was shown that angular ion distribution function changed due to temperature anisotropy and it can be interprets by different ways. Positive satellite potential increases these effects.

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