Predicting the Initial Crack Length in a Solid Propellant

Abstract

In this study, numerical analyses were performed to predict the initial crack length of specimens with two different sizes of holes using multi-level simulation techniques. The specimens were subjected to a constant strain rate of 0.33 in/in/min at room temperature. The criterion for determining the initial crack length was based on the instability of the material near the edge of the hole. The results of the analyses show that the predicted initial crack lengths compared well with the experimental measurements.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 2001
Accession Number
ADA410143

Entities

People

  • Chun Ting Liu
  • T. L. Hendrickson
  • Y. G. Kwon

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Composite Materials
  • Composite Structures
  • Crack Tips
  • Finite Element Analysis
  • Materials
  • Materials Laboratories
  • Mechanics
  • Military Research
  • Numerical Analysis
  • Propellants
  • Reinforced Plastics
  • Solid Propellants
  • Strain Rate
  • Stress Strain Relations
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Structural Health Monitoring of Composite Structures.