Finite Viscoplastic Deflections of an Impulsively Loaded Plate by the Mode Approximation Technique.

Abstract

The application of the mode approximation technique to a fully clamped plate is here described. Mode solutions for finite deflections are obtained from a sequence of instantaneous modes. Master solutions for chosen initial velocity amplitudes are constructed in nondimensional form. These depend weakly on a parameter of viscoplastic material behavior and size of structure, and so can be applied to a variety of loadings and structures. Finding each instantaneous mode shape and acceleration constitutes an eigen-problem, solved by finite elements with iterations. Comparisons with recent tests on steel and titanium plates are discussed in some detail. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA049827

Entities

People

  • Choon T. Chon
  • Paul S. Symonds

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms
  • Counter IED

DTIC Thesaurus Topics

  • Amplitude
  • Constitutive Equations
  • Crystal Structure
  • Differential Equations
  • Elements
  • Engineering
  • Equations
  • Explosives
  • Materials
  • Mechanical Properties
  • Military Research
  • Pressure Distribution
  • Shape
  • Strain Hardening
  • Strain Rate
  • Stratified Fluids
  • Stresses

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.