Failure of Ductile Materials and Components at High Rates of Loading

Abstract

The report summarizes progress in understanding plastic strain localization leading to fracture and fragmentation as it occurs in ductile structural components, primarily metals, and on the role of elastomer coatings in suppressing plastic strain localization. The main finding is that the elastomer becomes effective when the bifurcation strain of the ductile metal at which necks begin here's this or to form is roughly comparable to the strain at which the elastomer material shows significant strain rate stiffening.

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Document Details

Document Type
Technical Report
Publication Date
Sep 16, 2005
Accession Number
ADA438138

Entities

People

  • Lambert Ben Freund

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Structures
  • Constitutive Equations
  • Contracts
  • Deformation (Mechanics)
  • Elastomers
  • Elements
  • Explosives
  • Fragmentation
  • Hardening
  • Instructions
  • Long Wavelengths
  • Materials
  • Mechanics
  • Metals
  • Strain Hardening
  • Strain Rate
  • Structural Components

Readers

  • Materials Science (Mechanical Engineering).
  • Polymer Science and Technology