Inverse Estimation of Viscoelastic Material Properties Based on Particle Swarm Optimization and Neural Network

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Abstract:

The accuracy of inverse estimation for viscoelastic material properties is usually affected by two main factors: mechanical model and the initial value of iterations. In our research, a new method based on artificial neural network and modified particle swarm optimization (PSO) is developed to estimate viscoelastic material properties. The artificial neural network is established to model the behavior of viscoelastic materials which has solved the model-dependent problem; and chaos algorithm is also added to PSO algorithm to improve its local escaping ability which helps us solve the initial-value problem. Feasibility of this method is demonstrated by both data from theoretical formula and FEM simulation experiment.

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Periodical:

Advanced Materials Research (Volumes 488-489)

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124-128

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March 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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