Zobrazeno 1 - 10
of 14
pro vyhledávání: '"L. O. Grigor'eva"'
Publikováno v:
International Applied Mechanics. 50:406-411
A numerical algorithm for analyzing the planar nonstationary axisymmetric vibrations of piezoceramic circular plates polarized across the thickness and subject to electric excitation is developed. The dynamic characteristics of a ring plate are analy
Autor:
N. A. Shul’ga, L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 47:177-185
The three-dimensional equations of electroelasticity in Cartesian, cylindrical, and spherical coordinates are represented in Hamiltonian form with respect to the thickness coordinate. The boundary-value problem with a harmonic potential difference an
Publikováno v:
International Applied Mechanics. 47:62-69
The thickness vibrations of elastic inhomogeneous bodies of different geometry under dynamic harmonic loading are studied. The dependence of the amplitude–frequency characteristics of homogeneous and inhomogeneous bodies on excitation frequency is
Autor:
N. A. Shul’ga, L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 46:493-498
We developed a numerical method for solving the plane problem of nonstationary vibrations of a piezoceramic prismatic body with rectangular cross-section under mechanical loading. How the vibrations of the body with clamped edge are excited and propa
Autor:
L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 46:159-164
The methods of characteristics and difference schemes are used to study the nonstationary thickness vibrations of a piezoelectric layer polarized across the thickness and subjected to electrical and mechanical loads. The propagation of waves under lo
Autor:
N. A. Shul’ga, L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 45:401-405
The radial nonstationary vibrations of a piezoceramic cylinder polarized across the thickness and subjected to mechanical dynamic loading are studied. To solve the initial–boundary-value problem, mesh approximations and difference schemes are used.
Autor:
L. O. Grigor’eva, N. A. Shul’ga
Publikováno v:
International Applied Mechanics. 45:282-289
A method of successive approximations is used to study the nonstationary vibration of a piezoelectric layer subject to electric and mechanical excitation and to solve associated initial-boundary-value problems. At each approximation, the method of ch
Autor:
L. O. Grigor’eva, N. A. Shul’ga
Publikováno v:
International Applied Mechanics. 45:134-138
The paper studies the radial nonstationary vibration of a piezoceramic cylinder polarized throughout the thickness and subjected to a dynamic electric load. A numerical algorithm for solving an initial–boundary-value problem using mesh-based approx
Autor:
N. A. Shul’ga, L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 45:66-72
The paper proposes an analytic procedure based on the method of characteristics to study the nonstationary thickness vibration of a piezoelectric layer polarized across the thickness and subjected to dynamic mechanical loading. The problem is solved
Autor:
N. A. Shul’ga, L. O. Grigor’eva
Publikováno v:
International Applied Mechanics. 44:1371-1377
The Hamilton-Ostrogradsky principle is used to substantiate the statement of initial-boundary-value problems of electroelasticity. The free vibrations of a piezoceramic layer are used as an example to illustrate some features of solving nonstationary