Experimental Investigation of Tearing Fracture in Sheets Under Quasi-Static Loading

Abstract

Although there has been interest in the behavior of metal plates under blast and projectile loading for many years, definitive open-source analysis has only been recently forthcoming. This analysis is most often in the form of scaled recreations of the dynamic blast event, or "live fire" tests. New developments in methods of recreating blast and projectile induced plate failure using a quasi-static approach provide possible, accurate, alternatives to the cumbersome and expensive live fire test. This research endeavors to develop an accurate, quasi-static method of recreating the penalizing phase of blast and projectile failure in metal sheets, based on a modified trousers- type test. By using the trousers-type fracture test the overall plastic bending kinematics of the fractured petal is preserved, as well as the mixed mode (mode one and mode three) fracture. Through analytical and qualitative analysis, a testing apparatus to generate this trousers-type, plastic bending and mixed mode fracture was designed and machined.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2004
Accession Number
ADA425746

Entities

People

  • Michael L. Roach

Organizations

  • Colorado State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bearings
  • Bending Moments
  • Curvature
  • Engineering
  • Environmental Engineering
  • Explosives
  • Fabrication
  • Failure Mode And Effect Analysis
  • Friction
  • Geometry
  • Materials
  • Mechanics
  • Metal Plates
  • Munitions Testing
  • Test Methods
  • Three Dimensional
  • Uss Cole

Readers

  • Explosive Engineering.
  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design