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)

• 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