STABILITY OF A SLENDER ELASTIC BODY TRAVELING IN A TUBE
The stability of a slender, axisymmetric, elastic body, supported by two simple spring systems, travelling in a cylindrical tube filled with air is studied. Slender-body theory is used to evaluate the aerodymanic force acting on the body. Under this aerodynamic loading the elastic body is assumed to obey the equation of motion of a simple beam. A method of solution of the equation of motion is presented for a slender ogive cylinder. It is found that at a given travelling speed instability occurs when the length of the body exceeds a critical value. This critical length is found to be approximately proportional to the inverse of the travelling speed, and to the square-root of the difference of the characteristic cross-sectional areas of the tube and of the body to the third power. (Author)
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Corporate Authors:
Oceanics, Incorporated
Plainview, NY United States -
Authors:
- Wang, D P
- Publication Date: 1969-2
Media Info
- Pagination: 54 p.
Subject/Index Terms
- TRT Terms: Aerodynamics; Intelligent transportation systems; Pneumatic conveyors; Tubing
- Old TRIS Terms: Advanced systems; Tube systems; Tube vehicles
- Subject Areas: Operations and Traffic Management; Railroads;
Filing Info
- Accession Number: 00039147
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: TR-68-54
- Contract Numbers: DOT-FR-9-0020
- Files: TRIS
- Created Date: Nov 24 1973 12:00AM