Emission of elastic waves in an explosion in a porous elastic-plastic medium

1983 ◽  
Vol 24 (1) ◽  
pp. 94-96 ◽  
Author(s):  
S. Z. Dunin ◽  
A. M. Maslennikov ◽  
O. V. Nagornov ◽  
V. S. Fetisov
Keyword(s):  
Elastic Waves ◽  
Plastic Medium ◽  
Elastic Plastic

Deforming of Elastic-Plastic Medium with Self-Similar Restriction

2016 ◽  
Vol 685 ◽  
pp. 305-309 ◽  
Author(s):  
Alexandr A. Mantsybora ◽  
Maxim M. Rusanov
Keyword(s):  
Boundary Value Problem ◽  
Numerical Solution ◽  
Large Deformation ◽  
Half Space ◽  
Elastic Waves ◽  
Plastic Medium ◽  
Elastic Plastic ◽  
Deformation State ◽  
Similar Restriction ◽  
Self Similar

The problem of shock deforming of elastic-plastic half-space with large deformation was examined. We have obtained that the deformation state can be changed in two types of simple plastic waves and two types of shock elastic waves in the case of self-similar medium motion. The speeds and characteristics of plastic waves were examined. The numerical solution of boundary value problem was found.

scholarly journals ON PENETRATION OF RIGID NON-AXISYMMETRIC BODIESINTO ELASTIC-PLASTIC MEDIUM

2008 ◽  
Vol 70 (1) ◽  
pp. 131-139 ◽  
Author(s):  
N. V. Banichuk ◽  
S. Yu. Ivanova ◽  
Ye. V. Makeyev
Keyword(s):  
Plastic Medium ◽  
Elastic Plastic

Steady Flow of Incompressible Elastic-Plastic Medium in a Spherical Matrix at Variable Loads

2016 ◽  
Vol 685 ◽  
pp. 32-36
Author(s):  
Marina V. Polonik ◽  
Egor E. Rogachev
Keyword(s):  
Exact Solution ◽  
Steady Flow ◽  
Plastic Medium ◽  
Plastic Deformations ◽  
Elastic Plastic

In the framework of the model of large elastic-plastic deformations, the flow of the material in a spherical matrix at varying loads is examined. Simulation is carried out under the condition of steady elastic-plastic boundary. In order to find an exact solution the assumption of an ideal smoothness of the walls and incompressibility of the material is accepted.

scholarly journals Relaxation model of dynamic deformation of elastic-plastic media

2020 ◽  
pp. 36-43
Author(s):  
P.V. Makarov ◽  
Keyword(s):  
Strain Rate ◽  
External Action ◽  
Model Parameters ◽  
Relaxation Processes ◽  
Relaxation Model ◽  
Plastic Medium ◽  
Elastic Plastic ◽  
Relaxation Of Stresses ◽  
Local Relaxation ◽  
Induced Defects

A variant is considered for the relaxation model of a loaded elastic-plastic medium with dislocation kinetics of plastic shearing. The model is formulated in rates and includes two independent strain rates: total strain rate, which corresponds to the rate of external action, and local rate of plastic response of the material, which represents the ability of the medium to generate strain-induced defects. This makes it possible to describe both local relaxation processes in the elastic-plastic medium and average relaxation of stresses in a loaded specimen. The model being developed amounts to microscopic ones. All model parameters are determined from independent experiments for the evolution of the dislocation continuum during loading of macroscopic specimens. The model provides an adequate description of the dynamic effects of the macroscopic response of materials depending on the strain rate: the upper and lower yield points (yield drop, yield plateau), subsequent strain hardening as well as features of cyclic and alternating loading, ideal and nonideal Bauschinger effect.

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