Enhancements and Analysis of CTH Software for Underbody Blast

Abstract

Accurate tools and procedures for simulating the blast effects of shallow buried explosive devices are critical to the Department of Defense's efforts to design blast-resistant vehicles that can increase crew survivability and counter the threat from improvised explosive devices. Of the various computer codes available for modeling explosive effects, the CTH (CHART Squared to the Three-Halves) Eulerian hydrocode from Sandia National Laboratories is one of the most popular and is considered a standard tool for blast simulations. TARDEC is using CTH as one of its tools for designing blast-resistant vehicles. Two potential areas of improvement to CTH that will enhance its value are implementation of Hybrid Elastic-Plastic (HEP) Geo-material model to support buried mine simulation and procedures for utilizing CTH-generated blast loads in LS-DYNA structural dynamics simulations. Both of these enhancements have been implemented into CTHv9.1 and tested in this project

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2013
Accession Number
ADA571176

Entities

People

  • Christopher I. Moore
  • Ravi Thyagarajan
  • Richard Weed

Organizations

  • Mississippi State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Blast
  • Blast Loads
  • Computers
  • Department Of Defense
  • Engineering
  • Explosions
  • Explosive Devices
  • Explosives
  • Heat Capacity
  • Improvised Explosive Devices
  • Materials
  • Measurement
  • Mechanics
  • Simulations
  • Standards
  • Test And Evaluation
  • Three Dimensional

Readers

  • Computational Fluid Dynamics (CFD)
  • Military Science and Technology Research and Modernization.
  • Sensor Fusion and Tracking Systems.