Accession Number:

ADA028317

Title:

Comparison of Solution Methods for Composite Material Beam Response Due to Impact.

Descriptive Note:

Final contract rept. Jul 74-Jun 75,

Corporate Author:

DREXEL UNIV PHILADELPHIA PA

Personal Author(s):

Report Date:

1975-12-01

Pagination or Media Count:

59.0

Abstract:

Several solution methods are compared as to their usefulness in treating impact problems. The problem used as a basis for comparison involves a simply supported beam impacted at mid-span by a mass. The early-time and late-time structural responses of the system have been computed by 1 an analytical solution, 2 the NASTRAN finite-element, structural-analysis computer program, using both the direct integration method and the modal analysis method, and 3 the method of characteristics. The results have been compared. The chief conclusions are that the method of characteristics is the most accurate method for early-time, and that the NASTRAN modal method is best suited for late-time structural response.

Subject Categories:

  • Aircraft
  • Laminates and Composite Materials
  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE