您的位置: 文献下载 » 科技报告 » NASA报告 »

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

作者:科技文献资料网 时间:2018-10-16 09:56:13  浏览:9575   来源:科技文献资料网
下载地址: 点击此处下载
[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
下载地址: 点击此处下载
[唯一标识符]:CDSTIC.ISTP.135216
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:COMPARATIVE-ANALYSIS OF PUBLIC-OPINION RESEARCH IN THE US AND CANADA
[作者]:L Setlakwe;LA DiNunzio
[出版单位]:SPIE-INT SOCIETY OPTICAL ENGINEERINGBELLINGHAM
[ISSN_ISBN]:0-8194-5213-0
[会议名称]:5th Conference on Optical Security and Counterfeit Deterrence Techniques,SAN JOSE, CA,January 20-22, 2004
[来源]:OPTICAL SECURITY AND COUNTERFEIT DETERRENCE TECHNIQUES V,pp 13-24
[系列名称]:PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
[编辑者]:ERL VanRenesse
[主办单位]:SPIE;Soc Imaging Sci & Technol
[地址]:L Setlakwe,BANK_CANADA, OTTAWA, ON K1A 0G9, CANADA
[专业领域]:OPTICS,IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY
[文献类型]:科技报告
[标题]:Low-Speed Wind-Tunnel Tests on the Lift-Dependent Drag of delta Wings with Conical Camber.
[作者]:kirkpatrick, d. l. i. butterworth, p. j.
[机构]:Royal Aircraft Establishment,Farnborough (England). Aerodynamics Dept.
[关键词]:conical camber,delta wings,drag reduction,wind tunnel tests,lift drag ratio,low speed,slender wings,
[出版年份]:1975
[报告号]:ARC-CP-1293, RAE-TR-72123
[报告时间]:1974,
[页码]:39p
[馆藏索取号]:N75-17306
[总页数]:0