A Brief Description of New Algorithms Incorporated into CTH: A Model for Rigid Obstacles and an Interface for Coupling with Structural Codes

Abstract

The implementation of two new algorithms for the Eulerian shock physics code CTH are described. The first algorithm is a rigid obstacle algorithm and allows the insertion of non-deforming bodies, either fixed or with a prescribed velocity, into the Eulerian mesh. The second algorithm is a structural code interface that allows for the coupling of loads from a Eulerian computation on to the surfaces of a finite element mesh. Presently this interface is configured to work with finite element meshes generated for DYNA3D. Together, these two new algorithms represent a significant enhancement to available computational tools for modeling blast loads onto structures. Example calculations demonstrate the utility of these algorithms for simulation of blast damage to structures.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2005
Accession Number
ADA438098

Entities

People

  • David L. Littlefield

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Applied Mathematics
  • Blast Loads
  • Blast Waves
  • Computations
  • Computer Programming
  • Couplings
  • Equations
  • Geometry
  • High Performance Computing
  • Materials
  • Mathematics
  • Pressure Distribution
  • Simulations
  • Three Dimensional
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Explosive Engineering.