The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform

Weixing Yao - One of the best experts on this subject based on the ideXlab platform.

  • local stress strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

  • Local stress–strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

Deguang Shang - One of the best experts on this subject based on the ideXlab platform.

  • local stress strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

  • Local stress–strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

Dakang Wang - One of the best experts on this subject based on the ideXlab platform.

  • local stress strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

  • Local stress–strain Field Intensity approach to fatigue life prediction under random cyclic loading
    International Journal of Fatigue, 2001
    Co-Authors: Deguang Shang, Dakang Wang, Weixing Yao
    Abstract:

    Abstract According to the characteristic of the local behavior of fatigue damage, on the basis of stress Field Intensity approach, a theory of local stress–strain Field Intensity for fatigue damage at the notch is developed in this paper, which can take account of the effects of the local stress–strain gradient on fatigue damage at the notch. In order to calculate the local stress–strain Field Intensity parameters, an incremental elastic-plastic finite element analysis under random cyclic loading is used to determine the local stress–strain response. A local stress–strain Field Intensity approach to fatigue life prediction is proposed by means of elastic-plastic finite element method for notched specimens. This approach is used to predict fatigue crack initiation life, and good correlation was observed with U-shape notched specimens for normalized 45 steel.

Yao Weixing - One of the best experts on this subject based on the ideXlab platform.

  • Stress Field Intensity approach for predicting fatigue life
    International Journal of Fatigue, 1993
    Co-Authors: Yao Weixing
    Abstract:

    Abstract In this paper a new design approach for predicting fatigue life—the stress Field Intensity approach—is presented from the point of view of macromechanics on the basis of the mechanism of fatigue damage of metals. In this new approach the stress Field Intensity over the local region of damage, instead of the stress peak value as in the local stress-strain approach, was taken as the parameter with which to measure the fatigue strength of structures. Many fatigue phenomena, which the nominal stress approach and the local stress-strain approach could not explain, can be explained reasonably in this new approach.

Zong Wei - One of the best experts on this subject based on the ideXlab platform.

  • A More Accurate Calculation Method of Surface Electric Field Intensity of Bundled Conductors
    Power system technology, 2006
    Co-Authors: Zong Wei
    Abstract:

    As for the design of UHV transmission lines, the calculation of surface electric Field Intensity of bundled conductors is one of the main problems. Based on charge simulation method a more accurate calculation method of surface Field Intensity of bundled conductors is proposed, in which the position of simulation charges is adaptively determined and the formulae to calculate maximal Field Intensity of each phase are deduced, so the maximal Field Intensity on the surface of arbitrary conductor and that at any spatial point around the conductor can be directly calculated. Less number of simulation charges are used in the proposed method and the calculation is simple. The results of case study show that the proposed method is accurate.