Title of article :
SIZE and SHAPE RELIABILITY-BASED OPTIMIZATION OF DOME TRUSSES
Author/Authors :
Hoseini Vaez, R. Department of Civil Engineering - Faculty of Engineering - University of Qom, Qom , Hosseini, P. Faculty of Engineering - Mahallat Institute of Higher Education, Mahallat , Fathali, M.A. Department of Civil Engineering - Faculty of Engineering - University of Qom, Qom , Asaad Samani, A. Department of Civil Engineering - Faculty of Engineering - University of Qom, Qom , Kaveh, A. Iran University of Science and Technology, Tehran
Abstract :
Nowadays, the optimal design of structures based on reliability has been converted to an active topic in structural engineering. The Reliability-Based Design Optimization (RBDO) methods provide the structural design with lower cost and more safety, simultaneously. In this study, the optimal design based on reliability of dome truss structures with probability constraint of the frequency limitation is discussed. To solve the RBDO problem, nested double-loop method is considered; one of the loops performs the optimization process and the other one assesses the reliability of the structure. The optimization process is implemented using ECBO and EVPS algorithms and the reliability index is calculated using the Monte Carlo simulation method. Finally, the size and shape reliability-based optimization of 52-bar and 120-bar dome trusses has been investigated.
Keywords :
Monte Carlo simulation method , reliability index , truss structures , metaheuristic algorithms
Journal title :
International Journal of Optimization in Civil Engineering
