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Further assessment of numerical procedures for the study of fluid‐structure interaction
Author(s) -
Haxton R.S,
ElDeeb K.M.M.,
Royles R.,
Hunter I.T.
Publication year - 1995
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1995.tb00969.x
Subject(s) - fluid–structure interaction , discretization , explosive material , underwater , structural engineering , spectral density , computer science , mathematics , engineering , finite element method , geology , mathematical analysis , statistics , chemistry , oceanography , organic chemistry
Synopsis A study of the doubly asymptotic approach (DAA) to fluid‐structure interaction was carried out using the PAFEC/Dolphins and STAGS/USA suites of programs. The particular problem simulated was that of a ring stiffened circular cylindrical underwater structure subjected to explosive pulses at standoff distances of the order of the diameter of the structure. The method of discretisation is described and response data obtained for selected nodes on the structure. Typical responses in the form of velocity‐time history and power spectral density are presented. Response in terms of stress is given also for a particular node as derived from adjacent elements in order to provide a check on the quality of the PAFEC/Dolphins numerical model. A coarse and fine modelling exercise with the STAGS/USA program demonstrated little change in the structural response in the areas of interest. Comparisons are made between the predictions of the two numerical codes, and a brief description is given of the experimental validation of the STAG/USA program. Future developments are discussed.