Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads

IMR OpenIR

	Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads
其他题名	Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads
	Sha Yundong; Wang Jian
	2017
发表期刊	Chinese Journal of Aeronautics
ISSN	1000-9361
卷号	30 期号:6 页码:1919-1930
摘要	For large deflection strongly nonlinear response problem of thin-walled structure to thermal-acoustic load, thermal-acoustic excitation test and corresponding simulation analysis for clamped metallic thin-walled plate have been implemented. Comparing calculated values with experimental values shows the consistency and verifies the effectiveness of calculation method and model for thin-walled plate subjected to thermal-acoustic load. Then this paper further completes dynamic response calculation for the cross reinforcement plate under different thermal-acoustic load combinations. Based on the obtained time-domain displacement response, analyses about structure vibration forms are mainly focused on three typical motions of post-buckled plate, indicating that the relative strength between thermal load and acoustic load determines jump forms of plate. The Probability spectrum Density Functions (PDF) of displacement response were drawn and analyzed by employing statistical analysis method, and it clearly shows that the PDF of post-buckled plate exhibits bimodal phenomena. Then the Power Spectral Density (PSD) functions were used to analyze variations of response frequencies and corresponding peaks with the increase of temperatures, as well as how softening and hardening areas of the plate are determined. In the last section, this paper discusses the change laws of tensile stress and compressive stress in pre/post buckling areas, and gives the reasons for N glyph trend of the stress Root Mean Square (RMS). Keywords: Buckling, Experimental verification, Nonlinear response, Power spectral density, Probability spectrum density, Snap-through, Thermal-acoustic load, Thin-walled structure
其他摘要	For large deflection strongly nonlinear response problem of thin-walled structure to thermal-acoustic load, thermal-acoustic excitation test and corresponding simulation analysis for clamped metallic thin-walled plate have been implemented. Comparing calculated values with experimental values shows the consistency and verifies the effectiveness of calculation method and model for thin-walled plate subjected to thermal-acoustic load. Then this paper further completes dynamic response calculation for the cross reinforcement plate under different thermalacoustic load combinations. Based on the obtained time-domain displacement response, analyses about structure vibration forms are mainly focused on three typical motions of post-buckled plate, indicating that the relative strength between thermal load and acoustic load determines jump forms of plate. The Probability spectrum Density Functions(PDF) of displacement response were drawn and analyzed by employing statistical analysis method, and it clearly shows that the PDF of postbuckled plate exhibits bimodal phenomena. Then the Power Spectral Density(PSD) functions were used to analyze variations of response frequencies and corresponding peaks with the increase of temperatures, as well as how softening and hardening areas of the plate are determined. In the last section, this paper discusses the change laws of tensile stress and compressive stress in pre/post buckling areas, and gives the reasons for N glyph trend of the stress Root Mean Square(RMS).
关键词	Motor vehicles. Aeronautics. Astronautics TL1-4050
收录类别	CSCD
语种	英语
资助项目	[Aviation Basic Science Fund Project of China]
CSCD记录号	CSCD:6133871
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/154406
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Sha Yundong,Wang Jian. Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads[J]. Chinese Journal of Aeronautics,2017,30(6):1919-1930.
APA	Sha Yundong,&Wang Jian.(2017).Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads.Chinese Journal of Aeronautics,30(6),1919-1930.
MLA	Sha Yundong,et al."Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads".Chinese Journal of Aeronautics 30.6(2017):1919-1930.