Contact-Impact Algorithms for Penetration Studies

Abstract

Contact impact algorithms, which are sometimes called slideline algorithms, are a computationally time-consuming part of many explicit simulations of nonlinear problems. One of the reasons for their computational expense is that slideline algorithms are complex with many branches, so they are not amenable to vectorization, which is essential for speed on supercomputers. The pinball algorithm is a simplified slideline algorithm which is readily vectorized. Its major idea is to embed pinballs in surface elements and to enforce the impenetrability condition only to pinballs. The algorithm has been implemented in the WHAMS-3D code. Examples of solutions and running times are given.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1990
Accession Number
ADA231049

Entities

People

  • Mark O'neal
  • Ted Belytschko
  • Wing K. Liu

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Applied Mechanics
  • Bulk Modulus
  • Civil Engineering
  • Computational Fluid Dynamics
  • Computers
  • Differential Equations
  • Engineering
  • Equations
  • Fluid Dynamics
  • Geometry
  • Mathematics
  • Mechanical Properties
  • Mechanics
  • New York
  • Partial Differential Equations
  • Three Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)