Dynamic Failure Behavior of Naval Structural Steels

Abstract

The objective of this two year research is to: (1) characterize the dynamic constitutive behavior of structural metals including HY-80, HY-100, HSLA-80, HSLA-100, 4340 and Ti-6A1-4V; (2) evaluate the factors that determine their dynamic shear failure resistance; and (3) obtain experimental quantification of the failure resistance of these materials. A combined experimental and numerical approach has been employed in the investigation. The work carried out consists of experimental characterization of failure behavior and numerical simulations. Specific accomplishments are: (1) the responses of the above materials over a wide range of strain rate (of 0001 to 10000 per sec) have been characterized; (2) the dynamic shear failure resistances of these materials have been experimentally characterized; and (3) a novel Cohesive Finite Element Method (CFEM) has been developed for the modeling of dynamic shear failure, accounting for microscopic rupture as well as thermomechanical response. Numerical simulations have been carried to illustrate the failure behavior and failure mechanisms. This accomplishment exceeded the initial scope of tasks.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1998
Accession Number
ADA355454

Entities

People

  • Min Zhou

Organizations

  • Georgia Tech Research Corporation

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Engineering
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Hardening
  • Laminates
  • Materials
  • Mechanics
  • Metal Matrix Composites
  • Numerical Analysis
  • Payload
  • Resistance
  • Shear Bands
  • Simulations
  • Strain Rate
  • Stress Strain Relations
  • Tensile Strength

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.