Date of Award

12-1992

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Electrical and Computer Engineering

First Advisor

Anthony N. Palazotto, PhD

Abstract

The non-linear dynamic behavior of suddenly loaded composite shells is the subject of this research. The objective of research is two-fold: (1) to characterize the apparently random physical behavior sometimes observed in the finite element analysis as either numerical instability, chaotic behavior, or both; and (2) to develop criteria for choosing time steps for the finite element model, referred to as DSHELL. This displacement based finite element code is capable of dynamic analysis of plates, arches, and cylindrical shells undergoing large displacements and moderately large rotations during deformation. DSHELL uses a 36-DOF isoparametric shell element to obtain numerical results. A simplified shell model (MSHELL) is developed to provide a shell analog that requires much less computer time to run than the full-up.

AFIT Designator

AFIT-GAE-ENG-92D-06

DTIC Accession Number

ADA259026

Comments

The author's Vita page is omitted.

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