The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform

Vitaly Koissin - One of the best experts on this subject based on the ideXlab platform.

  • The Elastic Response of sandwich structures to local loading
    Composite Structures, 2004
    Co-Authors: Vitaly Koissin, Vitaly Skvortsov, Sergey Krahmalev, Andrey Shilpsha
    Abstract:

    The paper addresses the Elastic Response of sandwich panels to local static and dynamic loading. The bottom face is assumed to be clamped, so that the overall bending is eliminated. The governing equations are derived using the static Lamé equations for the core and the thin plate Kirchoff–Love dynamic theory for the faces. The plane and axisymmetric formulations are considered. The closed-form solutions are obtained using Fourier–Laplace (Hankel–Laplace) integral transformations for the cases of forced excitation and impact by a rigid body. The solutions allow to predict the stress–strain state of the structure. The analytical solutions demonstrate a good agreement with experimental data and finite element analysis

  • The Elastic Response of sandwich structures to local loading
    Composite Structures, 2003
    Co-Authors: Vitaly Koissin, Vitaly Skvortsov, Sergey Krahmalev, Andrey Shipsha
    Abstract:

    The paper addresses the Elastic Response of sandwich panels to local static and dynamic loading. The bottom face is assumed to be clamped, so that the overall bending is eliminated. The governing equations are derived using the static Lame equations for the core and the thin plate Kirchoff–Love dynamic theory for the faces. The plane and axisymmetric formulations are considered. The closed-form solutions are obtained using Fourier–Laplace (Hankel–Laplace) integral transformations for the cases of forced excitation and impact by a rigid body. The solutions allow to predict the stress–strain state of the structure. The analytical solutions demonstrate a good agreement with experimental data and finite element analysis.

Masayuki Kikuchi - One of the best experts on this subject based on the ideXlab platform.

  • Visco‐Elastic Response of joints to transmission waves
    Geophysical Research Letters, 1993
    Co-Authors: Naoto Yoshioka, Masayuki Kikuchi
    Abstract:

    Experiments of wave transmission across a joint were carried out to investigate the visco-Elastic Response of the joint. Two models for wave transmission were examined with the experimental data. The results show that the velocity discontinuity model which includes the effect of viscosity is in better agreement with the experimental observations for both P- and S-waves under dry conditions than the displacement discontinuity model. This suggests that at the real asperity contacts, the solid material behaves visco-Elastically to transmission waves in the high frequency range. A possible mechanism for the visco-Elastic behavior is plastic flow at the asperities caused by high local pressure.

Andrey Shipsha - One of the best experts on this subject based on the ideXlab platform.

  • The Elastic Response of sandwich structures to local loading
    Composite Structures, 2003
    Co-Authors: Vitaly Koissin, Vitaly Skvortsov, Sergey Krahmalev, Andrey Shipsha
    Abstract:

    The paper addresses the Elastic Response of sandwich panels to local static and dynamic loading. The bottom face is assumed to be clamped, so that the overall bending is eliminated. The governing equations are derived using the static Lame equations for the core and the thin plate Kirchoff–Love dynamic theory for the faces. The plane and axisymmetric formulations are considered. The closed-form solutions are obtained using Fourier–Laplace (Hankel–Laplace) integral transformations for the cases of forced excitation and impact by a rigid body. The solutions allow to predict the stress–strain state of the structure. The analytical solutions demonstrate a good agreement with experimental data and finite element analysis.

Andrey Shilpsha - One of the best experts on this subject based on the ideXlab platform.

  • The Elastic Response of sandwich structures to local loading
    Composite Structures, 2004
    Co-Authors: Vitaly Koissin, Vitaly Skvortsov, Sergey Krahmalev, Andrey Shilpsha
    Abstract:

    The paper addresses the Elastic Response of sandwich panels to local static and dynamic loading. The bottom face is assumed to be clamped, so that the overall bending is eliminated. The governing equations are derived using the static Lamé equations for the core and the thin plate Kirchoff–Love dynamic theory for the faces. The plane and axisymmetric formulations are considered. The closed-form solutions are obtained using Fourier–Laplace (Hankel–Laplace) integral transformations for the cases of forced excitation and impact by a rigid body. The solutions allow to predict the stress–strain state of the structure. The analytical solutions demonstrate a good agreement with experimental data and finite element analysis

John W. Mintmire - One of the best experts on this subject based on the ideXlab platform.

  • Molecular Dynamics Simulations of Elastic Response and Tensile Failure of Alumina
    Langmuir, 1996
    Co-Authors: F. H. Streitz‡ And, John W. Mintmire
    Abstract:

    We present the results of molecular dynamics simulations of α-alumina performed using the ES+ potential. We concentrate here on the applicability of these potentials to the study of surface structure and thin film Elastic Response. The aluminum-terminated (0001) surface of α-alumina is found to undergo dramatic relaxation away from bulk values, driven by the electrostatics of atoms near the surface. We find that the local valence is reduced by 25% for surface and near-surface atoms in this orientation. We demonstrate that the strain variation of the Elastic constants in a 25 A thick film of α-alumina can differ substantially from the expected behavior in a bulk crystal. The thin film was found to yield at a stress of approximately 45 GPa, in agreement with a calculation of the theoretical limit of yield stress.