Accession Number:

AD0671545

Title:

THE INFLUENCE OF DAMPING ON THE SNAPPING OF A SHALLOW ARCH UNDER A STEP PRESSURE LOAD

Descriptive Note:

Technical rept. no. 9

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF THE AEROSPACE AND MECHANICAL ENGINEERING SCIENCES

Personal Author(s):

Report Date:

1968-04-01

Pagination or Media Count:

33.0

Abstract:

The snapping of a simply-supported shallow sinusoidal arch under a sinusoidally distributed step pressure load is considered. In the presence of velocity-dependent damping of any nonzero magnitude, it is shown that there exists no difference between static and dynamic snap loads for arch rises above a certain magnitude and for sufficiently small external disturbances. Below the foregoing value of arch rise snapping is governed entirely by symmetric snap- through. The results obtained herein, when compared to an existing analysis on the subject, imply that a jump in the critical snap-through load occurs at the boundary between the damped and undamped systems. Similar results concerning cylinders and rings are mentioned.

Subject Categories:

  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE