Analytical Modeling of Inherent Characteristics of Bolted Joint Composite Plates Based on Virtual Materials

doi:10.12068/j.issn.1005-3026.2020.10.009

Abstract

Abstract: To improve the efficiency of dynamic analysis of the composite material structure with bolts， a corresponding analytical model was established on the basis of the virtual material model， and the inherent characteristics of the structure were solved. An energy analysis of the bolted joint composite plate structure was carried out， a dynamic analysis model of bolted joint composite plates was established by using Lagrange’s equation， and the natural frequencies and modal shapes of the structure were solved. The decomposition-based multi-objective evolutionary algorithm (MOEA/D) was used to determine the parameters of the virtual materials in the model to achieve the purpose of model modification. A case study was conducted on bolted TC500 carbon fiber/resin plates. The results showed that the application of this virtual material model can reproduce the vibration characteristics of bolted composite plate structures. After the model correction， the maximum deviation of the first 6 natural frequencies obtained from the simulation calculation and the measured value is 2.83%， which proves the rationality of the proposed modeling method.

Key words: virtual material, bolted joint, composite plate, inherent characteristics, analytical modeling

CLC Number:

TH131.3
O327

SUN Wei， FANG Zi-wen， LIU Xiao-feng. Analytical Modeling of Inherent Characteristics of Bolted Joint Composite Plates Based on Virtual Materials[J]. Journal of Northeastern University Natural Science, 2020, 41(10): 1421-1426.

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