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Prediction of Modulus of Composite Materials by BP Neural Network Optimized by Genetic Algorithm
Received date: 2021-04-09
Online published: 2022-06-28
In order to reduce the cost of testing and shorten the design cycle, this paper studies the prediction method of the modulus of resin matrix composites based on the machine learning method. Using a new prediction method — the neural network in combination with the genetic algorithm (GA-ANN), the strength, the Poisson’s ratio, and the failure strain of the T800/epoxy composite material are used as three input variables of the back propagation (BP) neural network. Then, the optimal threshold and weight are obtained in the genetic algorithm (GA), which are assigned to the corresponding network parameters, and the BP neural network is updated for higher accuracy to predict the modulus of resin matrix composites. Under the same conditions, the Adam algorithm is used to predict. A comparison of these two methods fully proves the feasibility of the GA-ANN algorithm.
WANG Zhuoxin, ZHAO Haitao, XIE Yuehan, REN Hantao, YUAN Mingqing, ZHANG Boming, CHEN Ji’an . Prediction of Modulus of Composite Materials by BP Neural Network Optimized by Genetic Algorithm[J]. Journal of Shanghai Jiaotong University, 2022 , 56(10) : 1341 -1348 . DOI: 10.16183/j.cnki.jsjtu.2021.126
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