Investigation of nonlinear free vibration of FG-CNTRC cylindrical panels resting on elastic foundation
- Authors
- Cho, J. R.
- Issue Date
- 10-Dec-2023
- Publisher
- TECHNO-PRESS
- Keywords
- cylindrical shell panels; FG-CNTRC; MITC3+shell element; non-linear free vibration; three-step iterative scheme; von Karman non-linearity; Winkler-Pasternak foundation
- Citation
- STRUCTURAL ENGINEERING AND MECHANICS, v.88, no.5, pp 439 - 449
- Pages
- 11
- Journal Title
- STRUCTURAL ENGINEERING AND MECHANICS
- Volume
- 88
- Number
- 5
- Start Page
- 439
- End Page
- 449
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/32407
- DOI
- 10.12989/sem.2023.88.5.439
- ISSN
- 1225-4568
1598-6217
- Abstract
- Non-linear vibration characteristics of functionally graded CNT-reinforced composite (FG-CNTRC) cylindrical shell panel on elastic foundation have not been sufficiently examined. In this situation, this study aims at the profound numerical investigation of the non-linear vibration response of FG-CNTRC cylindrical panels on Winkler -Pasternak foundation by introducing an accurate and effective 2-D meshfree-based non-linear numerical method. The large -amplitude free vibration problem is formulated according to the first -order shear deformation theory (FSDT) with the von Karman non -linearity, and it is approximated by Laplace interpolation functions in 2-D natural element method (NEM) and a non-linear partial derivative operator H-NL. The complex and painstaking numerical derivation on the curved surface and the crucial shear locking are overcome by adopting the geometry transformation and the MITC3+ shell elements. The derived nonlinear modal equations are iteratively solved by introducing a three -step iterative solving technique which is combined with Lanczos transformation and Jacobi iteration. The developed non-linear numerical method is estimated through the benchmark test, and the effects of foundation stiffness, CNT volume fraction and functionally graded pattern, panel dimensions and boundary condition on the non-linear vibration of FG-CNTRC cylindrical panels on elastic foundation are parametrically investigated.
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Collections - College of Science and Technology > Department of Naval Architecture and Ocean Engineering > 1. Journal Articles
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