Strength assessment of earth dams

Sultanov, Takhirjon; Yuldoshev, B.; Toshmatov, Elyor; Yarashov, Javlonbek; Ergashev, Rustam; Mirsaidov, Mirziyod

doi:10.1051/matecconf/201926504015

Cited by 8 publications

(2 citation statements)

References 5 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, the solution of which satisfying the boundary conditions of the problem by the Bubnov-Galerkin method, is sought in the form [16][17][18][19][20]:…”

Section: The Methods Of Solutionmentioning

confidence: 99%

Dynamic calculation of nonlinear oscillations of viscoelastic orthotropic plate with a concentrated mass

Khodzhaev

2019

E3S Web Conf.

View full text Add to dashboard Cite

Plates, panels and shells made of composite material with fixed objects in the form of an additional mass have found a wide use due to their viscoelastic and strength properties. An analysis of their dynamic behavior indicates a significant effect of inhomogeneity of an associated mass type on their strength. The problem of oscillations of a viscoelastic orthotropic rectangular plate with an associated mass is considered according to the Kirchhoff-Love hypothesis in a geometrically nonlinear statement. This problem is reduced to solving the systems of nonlinear integro-differential equations with singular relaxation kernels, solved by the Bubnov-Galerkin method in combination with a numerical method based on the use of quadrature formulas. The numerical values of the approximate solution have been calculated in the Delphi programming environment. At wide range of changes in physicomechanical and geometrical parameters, the behavior of the plate has been studied. The effect of viscoelastic and inhomogeneous material properties, concentrated mass and their location on the oscillatory process of a rectangular plate is shown.

show abstract

“…, the solution of which satisfying the boundary conditions of the problem by the Bubnov-Galerkin method, is sought in the form [16][17][18][19][20]:…”

Section: The Methods Of Solutionmentioning

confidence: 99%

Dynamic calculation of nonlinear oscillations of viscoelastic orthotropic plate with a concentrated mass

Khodzhaev

2019

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…-in [45,47], the stress state and natural oscillations of two earth dams in a spatial setting were studied. When assessing the strength, some dangerous sections of the dam were identified and natural frequencies were found that were not taken into account using a plane model;…”

Section: Introductionmentioning

confidence: 99%

Dynamic behavior of earth dams under different kinematic impacts

Mirsaidov

Toshmatov²

2023

E3S Web of Conf.

View full text Add to dashboard Cite

The paper provides a detailed analysis of the current state of the problem. A mathematical model is presented to determine the dynamic behavior of earth dams, considering the viscoelastic properties of soil, using the hereditary Boltzmann-Volterra theory with the A.R. Rzhanitsyn kernel under periodic kinematic impacts. To solve the problems considered, the finite element method and complex arithmetics were used to reduce integrodifferential equations to a high-order complex algebraic equation. The accuracy of the methods was verified by solving test problems. Steadystate forced vibrations of the Pskem earth dam 195 m high are studied considering the real geometry and soil properties under resonant vibration modes. It was stated that the largest stress amplitudes in the body of the dam occur not only under the first resonance, but they can occur under other dense spectra of the eigenfrequencies of the dam, due to the interaction between close natural modes of vibration. The strength of various sections of the dam body was tested under kinematic impact using the Coulomb- Mohr theory of strength; the most dangerous sections of the dam were identified in terms of the highest stress.

show abstract