期刊
COMPOSITE STRUCTURES
卷 131, 期 -, 页码 344-355出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2015.05.032
关键词
Snap-through; Fokker-Planck distribution; Thermal-acoustic; Nonlinear dynamic response
资金
- National Natural Science Foundation of China [11002020, 11472043]
- Program for New Century Excellent Talents at Chinese Universities
- Southeast University, Jiangsu Key Laboratory of Engineering Mechanics
The stochastic nonlinear snap-through response of a clamped composite panel under the combination of a severe acoustic excitation and a steady thermal effect has been investigated through the single-mode Fokker-Planck distribution function. The snap-through is a post-buckling behavior, which results in large amplitude vibration between two equilibrium configurations. A novel parameter, which is deduced from the single-mode Fokker-Planck distribution function and the depth of the potential energy well, is proposed to predict the transition from no snap-through to a persistent stochastic snap-through. The effects of the excitation, damping, the stiffness and the temperature variation on the stochastic dynamic snap-through response boundary have been given by a parametric analysis. Results from the single-mode analysis have been validated extensively by the explicit finite element numerical simulation for a heated clamped composite panel under the overall sound pressure (OASPL) of 120-176 dB. (C) 2015 Elsevier Ltd. All rights reserved.
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