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Nonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads
Alternative TitleNonlinear response analysis and experimental verification for thin-walled plates to thermal-acoustic loads
Sha Yundong; Wang Jian
2017
Source PublicationChinese Journal of Aeronautics
ISSN1000-9361
Volume30Issue:6Pages:1919-1930
AbstractFor 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
Other AbstractFor 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).
KeywordMotor vehicles. Aeronautics. Astronautics TL1-4050
Indexed ByCSCD
Language英语
Funding Project[Aviation Basic Science Fund Project of China]
CSCD IDCSCD:6133871
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/154403
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
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.
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