Accession Number : ADA571176


Title :   Enhancements and Analysis of CTH Software for Underbody Blast


Descriptive Note : Final rept. 1 Oct 2010-31 Dec 2012


Corporate Author : MISSISSIPPI STATE UNIV MISSISSIPPI STATE CENTER FOR ADVANCED VEHICULAR SYSTEMS


Personal Author(s) : Weed, Richard ; Moore, Christopher ; Thyagarajan, Ravi


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a571176.pdf


Report Date : 01 Feb 2013


Pagination or Media Count : 80


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


Descriptors :   *BLAST , *COMPUTER PROGRAMS , BLAST LOADS , BURIED OBJECTS , COMPUTERIZED SIMULATION , DEFORMATION , EQUATIONS OF STATE , EXPLOSION EFFECTS , EXPLOSIVE CHARGES , HULLS(STRUCTURES) , IMPROVISED EXPLOSIVE DEVICES , IMPULSE LOADING , MILITARY VEHICLES , STRUCTURAL PROPERTIES


Subject Categories : Computer Programming and Software
      Surface Transportation and Equipment
      Explosions
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE