A two-stage assessment method using damage locating vector method and differential evolution algorithm for damage identification of cross-ply laminated composite beams

2017 ◽  
Vol 20 (12) ◽  
pp. 1807-1827 ◽  
Author(s):  
Du Dinh-Cong ◽  
Trung Vo-Duy ◽  
Nhan Nguyen-Minh ◽  
Vinh Ho-Huu ◽  
Trung Nguyen-Thoi
Keyword(s):  
Differential Evolution ◽  
Damage Identification ◽  
Differential Evolution Algorithm ◽  
Laminated Composite ◽  
Composite Beams ◽  
Assessment Method ◽  
Two Stage ◽  
Vector Method ◽  
Evolution Algorithm ◽  
Laminated Composite Beams

scholarly journals Global optimization of laminated composite beams using an improved differential evolution algorithm

2020 ◽  
Vol 14 (1) ◽  
pp. 54-64
Author(s):  
Lam Thuan Phat ◽  
Nguyen Nhat Phi Long ◽  
Nguyen Hoai Son ◽  
Ho Huu Vinh ◽  
Le Anh Thang
Keyword(s):  
Global Optimization ◽  
Differential Evolution ◽  
Design Optimization ◽  
Optimization Problems ◽  
Differential Evolution Algorithm ◽  
Laminated Composite ◽  
Roulette Wheel Selection ◽  
Roulette Wheel ◽  
Evolution Algorithm ◽  
Improved Differential Evolution Algorithm

Differential Evolution (DE) is an efficient and effective algorithm recently proposed for solving optimization problems. In this paper, an improved version of Differential Evolution algorithm, called iDE, is introduced to solve design optimization problems of composite laminated beams. The beams used in this research are Timoshenko beam models computed based on analytical formula. The iDE is formed by modifying the mutation and the selection step of the original algorithm. Particularly, individuals involved in mutation were chosen by Roulette wheel selection via acceptant stochastic instead of the random selection. Meanwhile, in selection phase, the elitist operator is used for the selection progress instead of basic selection in the optimization process of the original DE algorithm. The proposed method is then applied to solve two problems of lightweight design optimization of the Timoshenko laminated composite beam with discrete variables. Numerical results obtained have been compared with those of the references and proved the effectiveness and efficiency of the proposed method. Keywords: improved Differential Evolution algorithm; Timoshenko composite laminated beam; elitist operator; Roulette wheel selection; deterministic global optimization.

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