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Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate

Publication ,  Journal Article
Zhang, W; Wu, QL; Yao, MH; Dowell, EH
Published in: Nonlinear Dynamics
October 1, 2018

This paper presents the study on the chaotic wave and chaotic dynamics of the nonlinear wave equations for a simply supported truss core sandwich plate combined with the transverse and in-plane excitations. Based on the governing equation of motion for the simply supported sandwich plate with truss core, the reductive perturbation method is used to simplify the partial differential equation. According to the exact solution of the unperturbed equation, two different kinds of the topological structures are derived, which one structure is the resonant torus and another structure is the heteroclinic orbit. The characteristic of the singular points in the neighborhood of the resonant torus for the nonlinear wave equation is investigated. It is found that there exists the homoclinic orbit on the unperturbed slow manifold. The saddle-focus type of the singular point appears when the homoclinic orbit is broken under the perturbation. Additionally, the saddle-focus type of the singular point occurs when the resonant torus on the fast manifold is broken under the perturbation. It is known that the dynamic characteristics are well consistent on the fast and slow manifolds under the condition of the perturbation. The Melnikov method, which is called the first measure, is applied to study the persistence of the heteroclinic orbit in the perturbed equation. The geometric analysis, which is named the second measure, is used to guarantee that the heteroclinic orbit on the fast manifold comes back to the stable manifold of the saddle on the slow manifold under the perturbation. The theoretical analysis suggests that there is the chaos for the Smale horseshoe sense in the truss core sandwich plate. Numerical simulations are performed to further verify the existence of the chaotic wave and chaotic motions in the nonlinear wave equation. The damping coefficient is considered as the controlling parameter to study the effect on the propagation property of the nonlinear wave in the sandwich plate with truss core. The numerical results confirm the validity of the theoretical study.

Duke Scholars

Published In

Nonlinear Dynamics

DOI

EISSN

1573-269X

ISSN

0924-090X

Publication Date

October 1, 2018

Volume

94

Issue

1

Start / End Page

21 / 37

Related Subject Headings

  • Acoustics
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 01 Mathematical Sciences
 

Citation

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Zhang, W., Wu, Q. L., Yao, M. H., & Dowell, E. H. (2018). Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate. Nonlinear Dynamics, 94(1), 21–37. https://doi.org/10.1007/s11071-018-4343-6
Zhang, W., Q. L. Wu, M. H. Yao, and E. H. Dowell. “Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate.” Nonlinear Dynamics 94, no. 1 (October 1, 2018): 21–37. https://doi.org/10.1007/s11071-018-4343-6.
Zhang W, Wu QL, Yao MH, Dowell EH. Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate. Nonlinear Dynamics. 2018 Oct 1;94(1):21–37.
Zhang, W., et al. “Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate.” Nonlinear Dynamics, vol. 94, no. 1, Oct. 2018, pp. 21–37. Scopus, doi:10.1007/s11071-018-4343-6.
Zhang W, Wu QL, Yao MH, Dowell EH. Analysis on global and chaotic dynamics of nonlinear wave equations for truss core sandwich plate. Nonlinear Dynamics. 2018 Oct 1;94(1):21–37.
Journal cover image

Published In

Nonlinear Dynamics

DOI

EISSN

1573-269X

ISSN

0924-090X

Publication Date

October 1, 2018

Volume

94

Issue

1

Start / End Page

21 / 37

Related Subject Headings

  • Acoustics
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 01 Mathematical Sciences