Analysis and Optimization of Truss Structures, Constrained Handling using Genetic Algorithm
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JACM-7-3_007
تاریخ نمایه سازی: 12 مرداد 1400
Abstract:
In this study, an attempt is made to minimize the weight of Howe roof and ten member-۶ Node trusses, separately. Two constraints, maximum allowable deflection and maximum allowable member stresses have been considered. For the first truss, permissible deflection is not known from the literature; therefore, it is determined using the exhaustive search method. Once magnitudes of the constraints are identified, member cross-sectional areas are varied to get the optimal weight. Both the exhaustive search method and the genetic algorithm have been implemented for this purpose. During the optimization, members tending to form a string may be eliminated from the structure. Doing this, we could further reduce the weights of the trusses and even less than the minimum available in the literature. The second truss is an indeterminate structure, and Maxwell Betti reciprocal theorem is applied to calculate the member forces. Also, further reduction of members is made for this truss, keeping in mind that the truss becomes determinate with the decrease in the member(s).
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Authors
Pal Ranjan Charan
Department of Mechanical Engineering, National Institute of Technology Durgapur, West Bengal, India
Nirmal Baran Hui
Department of Mechanical Engineering, National Institute of Technology Durgapur, West Bengal, India
J. Paulo Davim
Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
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