Accession Number:

AD0631773

Title:

ON THE EFFECTS OF SOURCE PROXIMITY ON THE DYNAMIC STRESSES AROUND A CYLINDRICAL CAVITY,

Descriptive Note:

Corporate Author:

RAND CORP SANTA MONICA CALIF

Personal Author(s):

Report Date:

1966-04-01

Pagination or Media Count:

48.0

Abstract:

An analysis is presented and numerical results are given of the interaction of a cylindrical wave impinging on a cylindrical cavity. It is assumed that a line source is located at an arbitrary distance from the cavity and that its strength varies harmonically in time. The resulting dynamic-stress-concentration factors around the cavity were determined by considering the wave-diffraction effects around the cavity. Numerical results indicate that the dynamic-stress-concentration factors around the cavity are dependent upon 1 distance from the source to the cavity, 2 wave numbers, and 3 the Poisson ratio of the medium. It is also shown that at high wave number high frequency the cylindrical-incident-wave problem becomes almost identical to the plane-wave problem however, at low wave number, the solution presented in this Memorandum departs drastically from all previous investigations where the incident wave is assumed to be a plane wave. Stress-concentration factors as much as 66 percent higher than those determined in earlier studies were noted in the present analysis. Author

Subject Categories:

  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE