The Non-Linear Dynamics of Composite Cylindrical Shells

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

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Document Details

Document Type
Technical Report
Publication Date
Dec 15, 1992
Accession Number
ADA259026

Entities

People

  • James M. Greer Jr.

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Composite Materials
  • Computers
  • Differential Equations
  • Dynamic Response
  • Epoxy Composites
  • Finite Element Analysis
  • Frequency
  • Geometry
  • Graphite Epoxy Composites
  • Materials
  • Nonlinear Dynamics
  • Physical Properties
  • Resonant Frequency
  • Two Dimensional
  • Vibration

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Control Systems Engineering.
  • Structural Dynamics.