scholarly journals Numerical simulation and analysis of the stress-strain state of the sacroiliac joint in different variants of lumbar lordosis

2012 ◽  
Vol 0 (2) ◽  
pp. 50 ◽  
Author(s):  
Volodymyr Staude ◽  
Andrey Kondratyev ◽  
Mykhaylo Karpinsky
Keyword(s):  
Numerical Simulation ◽  
Sacroiliac Joint ◽  
Lumbar Lordosis ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State

scholarly journals Numerical simulation of the stress-strain state of complex-reinforced elements

2019 ◽  
Vol 13 (2) ◽  
pp. 110-115
Author(s):  
Olena Krantovska ◽  
Mykola Petrov ◽  
Liubov Ksonshkevych ◽  
Matija Orešković ◽  
Sergii Synii ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Strain State ◽  
Theoretical Calculations ◽  
Experimental Studies ◽  
Theoretical Studies ◽  
Stress Strain ◽  
Narrow Strip ◽  
Stress Strain State ◽  
Graphical Environment ◽  
Experimental And Theoretical Studies

The article describes a developed technique of a numerical simulation of the stress-strain state of complex-reinforced elements, which allows you to create models of double-span continuous. The performed experimental and theoretical studies allowed us to carry out the testing of the developed design model and to justify the reliability of the proposed numerical simulation methodology. The results of the experimental studies were compared with those of the theoretical studies. The theoretical calculus algorithm was developed by using the finite element method. Theoretical calculations were performed by using the mathematical-graphical environment software system LIRA-SOFT and the mathematical and computer program MATLAB. On the basis of the experimental research, the iso-fields of displacements and stresses in the materials of an eccentrically compressed beam with a small bend of the slab were constructed, which collapse behind the inclined narrow strip of concrete and displacements and stresses in the materials of the eccentrically stretched beam, which is destroyed due to the yield of the upper mounting armature.

scholarly journals Numerical simulation of stress-strain state of electrophoretic shell molds

2017 ◽  
Vol 894 ◽  
pp. 012125 ◽  
Author(s):  
A V Sviridov ◽  
V I Odinokov ◽  
E A Dmitriev ◽  
A I Evstigneev ◽  
O V Bashkov
Keyword(s):  
Numerical Simulation ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State

scholarly journals Simulation of Seismic Explosion Waves with Underground Pipe Interaction

2018 ◽  
Vol 55 (3) ◽  
pp. 27-33 ◽  
Author(s):  
N. Remez ◽  
A. Dychko ◽  
S. Kraychuk ◽  
N. Ostapchuk ◽  
L. Yevtieieva ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Nonlinear Theory ◽  
Strain State ◽  
Underground Pipeline ◽  
Plastic Medium ◽  
Wave Processes ◽  
Stress Strain ◽  
Nonlinear Theory Of Shells ◽  
Stress Strain State ◽  
Theory Of Shells

Abstract The present paper provides numerical simulation of interaction of wave processes in the system “soil massif – underground pipeline” in explosion of charge on the surface of ground. Construction is considered in the framework of nonlinear theory of shells of Tymoshenko type. Soil is modelled by a solid porous multicomponent visco-plastic medium. The study establishes patterns of changes in stress-strain state of system depending on depth of pipeline laying and its diameter.

scholarly journals SEISMIC STABILITY OF THE MOORING WALL ACCORDING TO THE RESULTS OF NUMERICAL SIMULATION

2019 ◽  
pp. 2-2
Author(s):  
Victor A. Esinovsky
Keyword(s):  
Numerical Simulation ◽  
Spectral Theory ◽  
Strain State ◽  
Dynamic Theory ◽  
Seismic Stability ◽  
Hydraulic Structures ◽  
Seismic Loads ◽  
Stress Strain ◽  
Stress Strain State ◽  
Seismic Forces

Introduction. New building codes provide for a significant increase in the magnitude of seismic loads that should be perceived by hydraulic structures. In this regard, even in areas with low seismic activity, there may be a problem of ensuring the seismic stability of hydraulic structures. This is particularly acute in berthing facilities. As a rule, they are not so massive to withstand seismic loads. The issue of seismic stability of berthing facilities has not yet been properly considered. The results of numerical simulation of the seismic stability of the mooring-dividing wall during a 7-point earthquake are considered. A structure about 24 m high located on a non-rock base was investigated. Materials and methods. The seismic stability of the mooring structure was estimated by calculating its stress-strain state under the action of seismic forces. Calculations were carried out by the finite element method. Seismic loads on the structure were determined in two ways — by linear-spectral theory and by dynamic theory. For the calculation of seismic loads, 30 lower frequencies and the natural mode of the structure were determined together with an array of its base. When calculating according to the dynamic theory, the seismic effect was specified in the form of an accelerogram adopted for similar conditions. The direction of seismic impact was assumed horizontal. Results. According to the dynamic theory, seismic loads turned out to be lower than according to linear-spectral theory. However, the results of the calculation of the stress-strain state of the mooring structure were close. It was found that the seismic forces on the mooring wall will reach about a quarter of the weight of the structure. Under the influence of such forces, the mooring wall will lose its stability. Conclusions. To ensure seismic stability, it is recommended to combine the mooring wall and the base plate into a single monolithic structure, as well as to strengthen the lower part of the structure and facilitate the upper one.

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