Adding Stochastic Behavior to Deterministic Simulation Package HULL

Abstract

A study to investigate the stochastic variation in material failure mechanics of a typical high hardness armor (HHA) against tungsten penetrator problems was conducted. The HULL package was modified for simulation studies, and results from two different sets of calculations, each with a different randomness level, showed a relationship between the final lengths (between stations) and the prescribed randomness. Since higher percent deviation is likely associated with the higher failure rate of the target material, thus, at lower percent deviations, there is less penetration into the target and more compression of the penetrator, resulting in a smaller final length. Hence, the relationship seems to be a result of the compressive state of the penetrator rather than a result of its erosion. This relationship is likely to be present also in a more rigorous calculation with a Lagrangian-based formulation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1994
Accession Number
ADA276670

Entities

People

  • William E. Baker
  • William J. Bruchey
  • Yolin I. Huang

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Compression
  • Computations
  • Distribution Functions
  • Engineering
  • Failure Mode And Effect Analysis
  • Materials
  • Mechanical Working
  • Mechanics
  • Military Research
  • Normal Distribution
  • Probability
  • Probability Density Functions
  • Security
  • Simulations
  • Statistical Analysis
  • Statistical Distributions
  • Stress Strain Relations

Readers

  • Computational Modeling and Simulation
  • Metallurgy
  • ballistics.