The Experts below are selected from a list of 355518 Experts worldwide ranked by ideXlab platform

Csr Zhuzhou - One of the best experts on this subject based on the ideXlab platform.

B Han - One of the best experts on this subject based on the ideXlab platform.

  • compressive residual stress induced by water cavitation peening a Finite Element Analysis
    Materials & Design, 2009
    Co-Authors: B Han
    Abstract:

    Abstract Water cavitation peening is a recent promising method in surface treatment. It has the potential to induce compressive residual stresses that benefit the fatigue life of components similar to the other peening process. In this paper, a novel method, proposed for predicting residual stress induced on the materials subsurface treated with water cavitation peening, is presented. A bilinear elastic–plastic Finite Element Analysis was conducted to predict to residual stresses. The three-dimensional model was based on the classical bilinear kinematic hardening model that uses two slopes (elastic and plastic) to represent the stress–strain behavior of a material. The approach provided prediction of magnitude and depth of residual stress fields in pure titanium. Effect of applied impact pressures on the residual stresses was also presented. Results of the Finite Element Analysis modeling were in good agreement with that of the experimental measurements.

Pellicano Francesco - One of the best experts on this subject based on the ideXlab platform.

  • Nonlinear dynamic stability of cylindrical shells under pulsating axial loading via transient Finite Element Analysis
    'Elsevier BV', 2019
    Co-Authors: Rizzetto Fabio, Jansen Eelco, Strozzi Matteo, Pellicano Francesco
    Abstract:

    International audienceNonlinear dynamic stability investigations for isotropic and composite cylindrical shells under pulsating axial loading are carried out using transient Finite Element Analysis. In particular, important characteristics of the geometrically nonlinear behaviour are systematically studied through Finite Element Analysis. The results of the Finite Element Analysis are compared with results obtained in earlier studies using semi-analytical procedures. In order to facilitate the evaluation and the comparison of these two complementary approaches, a modal projection procedure has been developed for the Finite Element Analysis. Critical dynamic loads and frequency-response curves for isotropic and composite shells under pulsating loading obtained with the Finite Element transient Analysis are shown to be generally in good qualitative agreement with the results of earlier semi-analytical work. The Analysis of the modal amplitude achieved via the modal projection procedure also makes it possible to study the interactions between contributing modes and to observe and interpret interesting phenomena such as the occurrence of travelling waves in the circumferential direction of the shell

  • Nonlinear dynamic stability of cylindrical shells under pulsating axial loading via Finite Element Analysis using numerical time integration
    'Elsevier BV', 2019
    Co-Authors: Rizzetto Fabio, Jansen Eelco, Strozzi Matteo, Pellicano Francesco
    Abstract:

    Nonlinear dynamic stability investigations for isotropic and composite cylindrical shells under pulsating axial loading are carried out through Finite Element Analysis using numerical time integration. In particular, im- portant characteristics of the geometrically nonlinear behaviour are systematically studied through Finite Element Analysis. The results of the Finite Element Analysis are compared with results obtained in earlier studies using semi-analytical procedures. In order to facilitate the evaluation and the comparison of these two com- plementary approaches, a modal projection procedure has been developed for the Finite Element Analysis. Critical dynamic loads and frequency-response curves for isotropic and composite shells under pulsating loading obtained with the Finite Element Analysis using numerical time integration are shown to be generally in good qualitative agreement with the results of earlier semi-analytical work. The Analysis of the modal amplitude achieved via the modal projection procedure also makes it possible to study the interactions between con- tributing modes and to observe and interpret interesting phenomena such as the occurrence of travelling waves in the circumferential direction of the shell

Rizzetto Fabio - One of the best experts on this subject based on the ideXlab platform.

  • Nonlinear dynamic stability of cylindrical shells under pulsating axial loading via transient Finite Element Analysis
    'Elsevier BV', 2019
    Co-Authors: Rizzetto Fabio, Jansen Eelco, Strozzi Matteo, Pellicano Francesco
    Abstract:

    International audienceNonlinear dynamic stability investigations for isotropic and composite cylindrical shells under pulsating axial loading are carried out using transient Finite Element Analysis. In particular, important characteristics of the geometrically nonlinear behaviour are systematically studied through Finite Element Analysis. The results of the Finite Element Analysis are compared with results obtained in earlier studies using semi-analytical procedures. In order to facilitate the evaluation and the comparison of these two complementary approaches, a modal projection procedure has been developed for the Finite Element Analysis. Critical dynamic loads and frequency-response curves for isotropic and composite shells under pulsating loading obtained with the Finite Element transient Analysis are shown to be generally in good qualitative agreement with the results of earlier semi-analytical work. The Analysis of the modal amplitude achieved via the modal projection procedure also makes it possible to study the interactions between contributing modes and to observe and interpret interesting phenomena such as the occurrence of travelling waves in the circumferential direction of the shell

  • Nonlinear dynamic stability of cylindrical shells under pulsating axial loading via Finite Element Analysis using numerical time integration
    'Elsevier BV', 2019
    Co-Authors: Rizzetto Fabio, Jansen Eelco, Strozzi Matteo, Pellicano Francesco
    Abstract:

    Nonlinear dynamic stability investigations for isotropic and composite cylindrical shells under pulsating axial loading are carried out through Finite Element Analysis using numerical time integration. In particular, im- portant characteristics of the geometrically nonlinear behaviour are systematically studied through Finite Element Analysis. The results of the Finite Element Analysis are compared with results obtained in earlier studies using semi-analytical procedures. In order to facilitate the evaluation and the comparison of these two com- plementary approaches, a modal projection procedure has been developed for the Finite Element Analysis. Critical dynamic loads and frequency-response curves for isotropic and composite shells under pulsating loading obtained with the Finite Element Analysis using numerical time integration are shown to be generally in good qualitative agreement with the results of earlier semi-analytical work. The Analysis of the modal amplitude achieved via the modal projection procedure also makes it possible to study the interactions between con- tributing modes and to observe and interpret interesting phenomena such as the occurrence of travelling waves in the circumferential direction of the shell

Elizabeth J Samelso - One of the best experts on this subject based on the ideXlab platform.

  • prediction of incident vertebral fracture using ct based Finite Element Analysis
    Osteoporosis International, 2019
    Co-Authors: E T Allaire, F Johannesdotti, David L Kopperdahl, Tony M Keaveny, Mohamed Jarraya, Ali Guermazi, Miriam A Edella, Elizabeth J Samelso
    Abstract:

    Summary Prior studies show vertebral strength from computed tomography-based Finite Element Analysis may be associated with vertebral fracture risk. We found vertebral strength had a strong association with new vertebral fractures, suggesting that vertebral strength measures identify those at risk for vertebral fracture and may be a useful clinical tool.