Author:
Huang Peng,Hu Yaqi,Chen Fei,Han Bohua,Zhang Hongjun
Abstract
Advanced aerospace structures are subjected to extremely harsh working environment, including of mechanical, acoustic, thermal, and aerodynamic loads. These combined loads can make the structures exhibit complex response, which has already attracted increasing concern in the design of advanced aerospace structures. To tackle the problem, a finite element model (FEM) by discretizing the theoretical differential equation is established to calculate the dynamic response of thin-walled structures under combined thermal and acoustic loads. The numerical analysis indicates that three types of nonlinear responses of the thin plate under combined thermal-acoustic loads are obtained, and the mechanism of snap-through is revealed through two ways: thermal buckling analysis and thermal modal analysis. which can be used to explain the nonlinear response characteristics.
Reference7 articles.
1. Z. Dang and Z. Mao, “Dynamic response analysis of a thin-walled rectangular plate subjected to thermoacoustic loadings,” Archives of Thermodynamics, Vol. 41, No. 1, pp. 151–174-151-174, Jul. 2023, https://doi.org/10.24425/ather.2020.132953
2. J. Wang, F. Zhao, Y. Sha, and S. Gu, “Fatigue life research and experimental verification of superalloy thin-walled structures subjected to thermal-acoustic loads,” (in Chinese), Chinese Journal of Aeronautics, Vol. 33, No. 2, pp. 598–608, Feb. 2020, https://doi.org/10.1016/j.cja.2019.09.012
3. C. F. Ng, “The nonlinear acoustic response of thermally buckled plates,” Applied Acoustics, Vol. 59, No. 3, pp. 237–251, Mar. 2000, https://doi.org/10.1016/s0003-682x(99)00009-2
4. J. Lee, “Topology of the four-mode strain energy of thermally buckling plates,” Journal of Thermal Stresses, Vol. 25, No. 9, pp. 813–857, Jan. 2011, https://doi.org/10.1080/01495730290074441
5. C. Mei, “Three decades’ interesting experience in nonlinear finite element formulation development and aerospace applications,” in Proceedings of the 7th International Conference on Recent Advances in Structural Dynamics, pp. 37–42, 2007.