Accession Number:

AD0781704

Title:

Evaluation of Numerical Time Integration Methods as Applied to Elastic-Plastic Dynamic Problems Involving Wave Propagation.

Descriptive Note:

Research rept.,

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT

Personal Author(s):

Report Date:

1974-03-01

Pagination or Media Count:

45.0

Abstract:

Several of the more commonly used time integration methods for problems in structural dynamics are applied to obtain the elastoplastic dynamic response of a finite element bar assemblage. Two equivalent problems, representing a first order simulation of a crash that might be suffered by a surface or an aircraft vehicle, were selected to test the various methods. These problems are as follows An elastic-plastic bar is fixed at one end and subject to a step pulse at the other end, A bar free at both ends travels with uniform velocity and crashes into a rigid barrier. Modified author abstract

Subject Categories:

  • Aircraft
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE