The Experts below are selected from a list of 105 Experts worldwide ranked by ideXlab platform
Hiroshi Ohmori - One of the best experts on this subject based on the ideXlab platform.
-
TRUSS OPTIMIZATION USING GENETIC ALGORITHM CONSIDERING ULTIMATE RESISTANCE
Journal- International Association for Shell and Spatial Structures, 2020Co-Authors: Huaguo Wang, Hiroshi OhmoriAbstract: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, 2013Co-Authors: Huaguo Wang, Hiroshi OhmoriAbstract: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 - One of the best experts on this subject based on the ideXlab platform.
-
TRUSS OPTIMIZATION USING GENETIC ALGORITHM CONSIDERING ULTIMATE RESISTANCE
Journal- International Association for Shell and Spatial Structures, 2020Co-Authors: Huaguo Wang, Hiroshi OhmoriAbstract: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, 2013Co-Authors: Huaguo Wang, Hiroshi OhmoriAbstract: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 - One of the best experts 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, 2015Co-Authors: Asadollah Bassam, Javad MoslemianAbstract: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.
Joo Shin Park - One of the best experts on this subject based on the ideXlab platform.
-
A method for determining fire Accidental Loads and its application to thermal response analysis for optimal design of offshore thin-walled structures
Fire Safety Journal, 2017Co-Authors: Joo Shin ParkAbstract:Abstract More than 70% of accidents that occur on offshore installations stem from hydrocarbon fire and explosion, and as they involve heat and blast effects, they are extremely hazardous with serious consequences in terms of human health, structural safety and the surrounding environment. To prevent further accidents, substantial effort has been directed towards the management of fire and explosion in the safety design of offshore installations. The aim of this paper is to present a risk-based methodology procedure to help determine the fire Accidental design Load of an offshore installation (AL Living Quarter) in association with the thermal response characteristics for structural optimisation. A probabilistic sampling approach with numerical fire simulations was taken to determine the fire Accidental Load. To determine the optimisation of the thin-walled structures of the living quarter, an A60 based on the results of thermal response analyses was conducted and the temperature distribution calculated. The analysis results suggest incorporating both the design and safety planning aspects of offshore Living Quarter.
Yan Bo - One of the best experts on this subject based on the ideXlab platform.
-
Damage Model Test of Prestressed T-Beam Under Explosion Load
IEEE Access, 2019Co-Authors: Han Guozhen, Yan BoAbstract:Bridge is an important infrastructure in road traffic, which may bear the Accidental Load of terrorist attacks and transportation accidents and explosions in its life cycle. In this paper, three groups of prestressed T-beam model tests were carried out in response to the terrorist explosion on the bridge deck. The results show that with the increase of explosive equivalent, the failure degree of prestressed steel reinforcement is aggravated, the number of anchorage falling off is increased, and the normal steel reinforcement evolved from failure to fracture. The fracture shape of the web of prestressed T-beam was “X”, and the failure form on both sides of the web was roughly “I” shape. The number of concrete cracks increased, and the crack depth and the size of the crack increased. The local failure mode of T-beam evolved from seismic collapse to penetrating failure, and the residual bearing capacity of prestressed T-beam gradually decreased.
