Partitioned Analysis for Multidisciplinary Problems Involving Structures.

Abstract

Partitioned analysis is a method by which sets of time-dependent ordinary differential equations for coupled systems may be numerically integrated in tandem, thereby avoiding brute-force simultaneous solution. The coupled systems addressed in this report pertain to fluid structure, fluid soil, soil structure, or even structure structure interaction . The report describes the partitioning process for certain discrete element equations of motion, as well as the associated computer implementation. It then delineates the procedure for designing a partitioned analysis method in a given application. Finally, examples are presented to illustrate the concepts. It is seen that a key element in the implementation of partitioned analysis is the use of integrated, as opposed to monolithic software. Keywords: Numerical methods; Finite elements; Boundary elements; Underwater shock.

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1986
Accession Number
ADA192236

Entities

People

  • Carlos A. Felippa
  • Thomas L. Geers

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Applied Mechanics
  • Computational Fluid Dynamics
  • Computational Mechanics
  • Computational Science
  • Computer Programs
  • Computers
  • Contracts
  • Design Criteria
  • Difference Equations
  • Differential Equations
  • Engineering
  • Equations Of Motion
  • Finite Element Analysis
  • Frequency
  • Mechanics
  • Standards

Readers

  • Computational Modeling and Simulation
  • Structural Dynamics.
  • Systems Analysis and Design