# Transverse vibrations of a composite cylindrical tube of circular cross section (M.S. Thesis)

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[唯一标识符]:CDSITC.AEROSPACE.N90-22820

[文献来源]:美国航空航天数据库(aerospace)

[资源原始索取号]:N1990-22820; Reference AN: N90-22820

[标题]:Transverse vibrations of a composite cylindrical tube of circular cross section (M.S. Thesis)

[作者]:ETTER RAYMOND WILLIAM

[文摘]:The transverse frequencies of vibration of laminated orthotropic cylindrical shells were studied in order to compare experimental results with results predicted by a modified Euler-Bernoulli beam theory. The structures studied had circular cross sections and were made of graphite/epoxy. Stacking sequences for the test structures were (90, + or -603,90) and (90, + or -453,90). The structures were tested under clamped-free boundary conditions. Testing was conducted by measuring the Frequency Response Function (FRF) of the structure after exciting it with a modal hammer. Response was measured using an accelerometer. Signal processing was done with a digital signal analyzer and FRFs were analyzed using modal analysis software. The experimental data were used to derive a modal model of the test structure. Analytical predictions were made by one dimensionalizing the two dimensional laminated plate theory equations of motion. Treatment of the test structures as a beam was justified by investigating the equations of motion of classical shell theory and making physically reasonable assumptions. (GRA)

[关键词]:CIRCULAR CYLINDERS; CYLINDRICAL SHELLS; DYNAMIC STRUCTURAL ANALYSIS; MODAL RESPONSE; SHELL THEORY; TRANSVERSE OSCILLATION; VIBRATIONAL SPECTRA; ACCELEROMETERS ; COMPOSITE STRUCTURES; COMPUTER PROGRAMS; EQUATIONS OF MOTION; GRAPHITE EPOXY COMPOSITES; SIGNA

[出版年份]:1989

[专业领域]:STRUCTURAL MECHANICS

[文献来源]:美国航空航天数据库(aerospace)

[资源原始索取号]:N1990-22820; Reference AN: N90-22820

[标题]:Transverse vibrations of a composite cylindrical tube of circular cross section (M.S. Thesis)

[作者]:ETTER RAYMOND WILLIAM

[文摘]:The transverse frequencies of vibration of laminated orthotropic cylindrical shells were studied in order to compare experimental results with results predicted by a modified Euler-Bernoulli beam theory. The structures studied had circular cross sections and were made of graphite/epoxy. Stacking sequences for the test structures were (90, + or -603,90) and (90, + or -453,90). The structures were tested under clamped-free boundary conditions. Testing was conducted by measuring the Frequency Response Function (FRF) of the structure after exciting it with a modal hammer. Response was measured using an accelerometer. Signal processing was done with a digital signal analyzer and FRFs were analyzed using modal analysis software. The experimental data were used to derive a modal model of the test structure. Analytical predictions were made by one dimensionalizing the two dimensional laminated plate theory equations of motion. Treatment of the test structures as a beam was justified by investigating the equations of motion of classical shell theory and making physically reasonable assumptions. (GRA)

[关键词]:CIRCULAR CYLINDERS; CYLINDRICAL SHELLS; DYNAMIC STRUCTURAL ANALYSIS; MODAL RESPONSE; SHELL THEORY; TRANSVERSE OSCILLATION; VIBRATIONAL SPECTRA; ACCELEROMETERS ; COMPOSITE STRUCTURES; COMPUTER PROGRAMS; EQUATIONS OF MOTION; GRAPHITE EPOXY COMPOSITES; SIGNA

[出版年份]:1989

[专业领域]:STRUCTURAL MECHANICS

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