Accession Number:

AD0626412

Title:

DASHER I: A PROGRAM FOR THE DYNAMIC ANALYSIS OF SHELLS OF REVOLUTION,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s):

Report Date:

1965-10-01

Pagination or Media Count:

88.0

Abstract:

This report presents an analysis and a computer program which permits determining the transient deformation of an undamped system which contains both inertial and elastic coupling by a timewise step-by-step computational process. The program is developed for the purpose of Dynamic Analysis of Shells of Revolution DASHER. The input to the program consists of the stiffness and consistent-mass matrices which are derived from a finite-element representation of the structure. Three examples are presented to illustrate the application of this program. One of these concerns the dynamic deformations of a simply-supported beam subjected to a uniform step-function loading the second concerns the dynamic deformations of a circular cylindrical shell under a uniformly distributed external pressure having a half-sine shape time history and the third is similar to the second except that the axisymmetric pressure loading on the cylinder has a sin Pi zL longitudinal distribution. Guidance for the selection of an appropriate time interval for this type of step-by-step calculation is provided. Author

Subject Categories:

  • Computer Programming and Software
  • Mechanics
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE