Accession Number : ADA192236

Title :   Partitioned Analysis for Multidisciplinary Problems Involving Structures.

Descriptive Note : Technical rept. 8 Jan 79-31 May 81,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA

Personal Author(s) : Felippa, Carlos A ; Geers, Thomas L

PDF Url : ADA192236

Report Date : 30 Apr 1986

Pagination or Media Count : 36

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.

Descriptors :   *FINITE ELEMENT ANALYSIS, *SHOCK(MECHANICS), *UNDERWATER STRUCTURES, *STRUCTURAL RESPONSE, COUPLING(INTERACTION), DIFFERENTIAL EQUATIONS, DISCRETE DISTRIBUTION, EQUATIONS, INTERACTIONS, NUMERICAL METHODS AND PROCEDURES, TIME DEPENDENCE, UNDERWATER, CAVITATION

Subject Categories : Mechanics
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE