System RBDO of truss structures considering interval distribution parameters

被引:4
作者
Zaeimi, Mohammad [1 ]
Ghoddosian, Ali [1 ]
机构
[1] Semnan Univ, Fac Mech Engn, Semnan, Iran
关键词
reliability based design optimization; interval distribution parameters; improved (mu plus lambda) constrained differential evolution (ICDE); structural optimization; RELIABILITY-BASED DESIGN; DIFFERENTIAL EVOLUTION; EFFICIENT METHOD; OPTIMIZATION; ALGORITHM;
D O I
10.12989/sem.2019.70.1.081
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In this paper, a hybrid uncertain model is applied to system reliability based design optimization (RBDO) of trusses. All random variables are described by random distributions but some key distribution parameters of them which lack information are defined by variation intervals. For system RBDO of trusses, the first order reliability method, as well as monotonicity analysis and the branch and bound method, are utilized to determine the system failure probability; and Improved (mu+lambda) constrained differential evolution (ICDE) is employed for the optimization process. System reliability assessment of several numerical examples and system RBDO of different truss structures are proposed to verify our results. Moreover, the effect of different classes of interval distribution parameters on the optimum weight of the structure and the reliability index are also investigated. The results indicate that the weight of the structure is increased by increasing the uncertainty level. Moreover, it is shown that for a certain random variable, the optimum weight is more increased by the translation interval parameters than the rotation ones.
引用
收藏
页码:81 / 96
页数:16
相关论文
共 52 条
[1]  
Ang A. H.-S., 2007, PROBABILITY CONCEPTS
[2]  
[Anonymous], 1990, Convex Models of Uncertainty in Applied Mechanics J
[3]   Improved bat algorithm for structural reliability assessment: application and challenges [J].
Chakri, Asma ;
Khelif, Rabia ;
Benouaret, Mohamed .
MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES, 2016, 12 (02) :218-253
[4]   A sequential approximate programming strategy for reliability-based structural optimization [J].
Cheng, Gengdong ;
Xu, Lin ;
Jiang, Lei .
COMPUTERS & STRUCTURES, 2006, 84 (21) :1353-1367
[5]   Reliability-Based Optimal Design of Truss Structures Using Particle Swarm Optimization [J].
Dimou, C. K. ;
Koumousis, V. K. .
JOURNAL OF COMPUTING IN CIVIL ENGINEERING, 2009, 23 (02) :100-109
[6]   Competitive genetic algorithms with application to reliability optimal design [J].
Dimou, CK ;
Koumousis, VK .
ADVANCES IN ENGINEERING SOFTWARE, 2003, 34 (11-12) :773-785
[7]   An efficient method for reliable optimum design of trusses [J].
Dizangian, Babak ;
Ghasemi, Mohammad Reza .
STEEL AND COMPOSITE STRUCTURES, 2016, 21 (05) :1069-1084
[8]  
Du, 2007, INTERVAL RELIABILITY
[9]   Reliability-based design with the mixture of random and interval variables [J].
Du, XP ;
Sudjianto, A ;
Huang, BQ .
JOURNAL OF MECHANICAL DESIGN, 2005, 127 (06) :1068-1076
[10]   Structural reliability assessment based on particles swarm optimization [J].
Elegbede, C .
STRUCTURAL SAFETY, 2005, 27 (02) :171-186