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Accidental Load

The Experts below are selected from a list of 105 Experts worldwide ranked by ideXlab platform

Hiroshi Ohmori – 1st expert on this subject based on the ideXlab platform

  • TRUSS OPTIMIZATION USING GENETIC ALGORITHM CONSIDERING ULTIMATE RESISTANCE
    Journal- International Association for Shell and Spatial Structures, 2020
    Co-Authors: Huaguo Wang, Hiroshi Ohmori

    Abstract:

    In this paper the incremental elasto-plastic analysis method, a plastic analysis method conventionally used for the calculation of collapse Load factor of frame structure, is harnessed for the prediction of the collapse Load factor of truss structure. The obtained collapse Load factor is then incorporated into the optimization of a truss structure using a Genetic Algorithm (GA) in order to generate truss structures which can not only maintain Load-carrying capacity under ordinary Load conditions such as dead Load and live Load, but also avert collapse under Accidental Load conditions such as an extremely large earthquake, drastic typhoon, or other Accidental Loads. In the numerical example, the designed optimization scheme is implemented to solve an optimization problem of a roof truss structure, resulting in an optimal lightweight, safe structure under both ordinary and Accidental Load conditions.

  • Elasto-plastic analysis based truss optimization using Genetic Algorithm
    Engineering Structures, 2013
    Co-Authors: Huaguo Wang, Hiroshi Ohmori

    Abstract:

    Abstract In this paper, the incremental elasto-plastic analysis method, is utilized to predict the collapse Load factor of truss structures. The obtained collapse Load factor is then incorporated into truss optimization using a Genetic Algorithm (GA) in order to generate truss structures which cannot only maintain Load-carrying capacity under ordinary Load conditions, but also avoid collapse under Accidental Load conditions such as an extremely large earthquake. Our designed optimization scheme is successfully implemented to solve two optimization problems, indicating the successful realization of designed optimization scheme.

Huaguo Wang – 2nd expert on this subject based on the ideXlab platform

  • TRUSS OPTIMIZATION USING GENETIC ALGORITHM CONSIDERING ULTIMATE RESISTANCE
    Journal- International Association for Shell and Spatial Structures, 2020
    Co-Authors: Huaguo Wang, Hiroshi Ohmori

    Abstract:

    In this paper the incremental elasto-plastic analysis method, a plastic analysis method conventionally used for the calculation of collapse Load factor of frame structure, is harnessed for the prediction of the collapse Load factor of truss structure. The obtained collapse Load factor is then incorporated into the optimization of a truss structure using a Genetic Algorithm (GA) in order to generate truss structures which can not only maintain Load-carrying capacity under ordinary Load conditions such as dead Load and live Load, but also avert collapse under Accidental Load conditions such as an extremely large earthquake, drastic typhoon, or other Accidental Loads. In the numerical example, the designed optimization scheme is implemented to solve an optimization problem of a roof truss structure, resulting in an optimal lightweight, safe structure under both ordinary and Accidental Load conditions.

  • Elasto-plastic analysis based truss optimization using Genetic Algorithm
    Engineering Structures, 2013
    Co-Authors: Huaguo Wang, Hiroshi Ohmori

    Abstract:

    Abstract In this paper, the incremental elasto-plastic analysis method, is utilized to predict the collapse Load factor of truss structures. The obtained collapse Load factor is then incorporated into truss optimization using a Genetic Algorithm (GA) in order to generate truss structures which cannot only maintain Load-carrying capacity under ordinary Load conditions, but also avoid collapse under Accidental Load conditions such as an extremely large earthquake. Our designed optimization scheme is successfully implemented to solve two optimization problems, indicating the successful realization of designed optimization scheme.

Javad Moslemian – 3rd expert on this subject based on the ideXlab platform

  • comparison of the approaches used for the evaluation of Accidental Load drops in nuclear power plant structures
    Structures Congress 2015, 2015
    Co-Authors: Asadollah Bassam, Javad Moslemian

    Abstract:

    An Accidental Load drop during Load handling could impact the safety of the nuclear plant structures or safety-related equipment and cause inadvertent criticality, or loss of safe shutdown equipment. In this paper, available approaches for evaluation of the structural members due to impact of an Accidental Load drop in US nuclear power plants are evaluated. Consideration is given to the limitations of the approaches imposed by the NUREG-0612 (1980). The paper discusses the two common approaches that can be used to evaluate the impact: the first approach is to calculate the elasto-plastic energy absorption capacity of the member and compare it to the energy imparted during impact. The second is to estimate the applied force on the impacted member considering the penetration of the Load into the target using empirical formulas. The limitations of each approach are demonstrated by evaluation of a hypothetical structural beam. Both approaches are investigated to calculate the allowable Load at a given drop height for various drop locations along the beam centerline, as well as off-centerline of the beam. Additionally, a sensitivity study is performed to consider the effect of boundary conditions on the results in terms of the Load drop capacity. Based on the results of the analysis, recommendations are given for the proper selection of the approach to estimate the allowable drop Load based on the Load drop location.