@Article{cmc.2020.07184,
AUTHOR = {Fengrui Liu, Wanting Yao, Xinhong Shi, Libin Zhao, Jianyu Zhang},
TITLE = {Bearing Failure Optimization of Composite Double-Lap Bolted Joints Based on a Three-Step Strategy Marked By Feasible Region Reduction and Model Decoupling},
JOURNAL = {Computers, Materials \& Continua},
VOLUME = {62},
YEAR = {2020},
NUMBER = {2},
PAGES = {977--999},
URL = {http://www.techscience.com/cmc/v62n2/38288},
ISSN = {1546-2226},
ABSTRACT = {To minimize the mass and increase the bearing failure load of composite doublelap bolted joints, a three-step optimization strategy including feasible region reduction, 
optimization model decoupling and optimization was presented. In feasible region 
reduction, the dimensions of the feasible design region were reduced by selecting dominant 
design variables from numerous multilevel parameters by sensitivity analyses, and the 
feasible regions of variables were reduced by influence mechanism analyses. In model 
decoupling, the optimization model with a large number of variables was divided into 
various sub-models with fewer variables by variance analysis. In the third step, the 
optimization sub-models were solved one by one using a genetic algorithm, and the
modified characteristic curve method was adopted as the failure prediction method. Based 
on the proposed optimization method, optimization of a double-lap single-bolt joint was 
performed using the ANSYS<sup>®</sup> code. The results show that the bearing failure load increased 
by 13.5% and that the mass decreased by 8.7% compared with those of the initial design of 
the joint, which validated the effectiveness of the three-step optimization strategy.},
DOI = {10.32604/cmc.2020.07184}
}