Premium
Gradients of behaviour constraints and reanalysis via the integrated force method
Author(s) -
Patnaik S. N.,
Gallagher Richard H.
Publication year - 1986
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620231205
Subject(s) - displacement (psychology) , matrix (chemical analysis) , internal forces , stress (linguistics) , mathematics , computer science , algorithm , structural engineering , engineering , materials science , psychology , linguistics , philosophy , composite material , psychotherapist
A matrix formulation of structural analysis, known as the integrated force method (IFM) is an attempt to establish an approach in which internal forces are the unknowns. Gradients of such behaviour constraints as stress, displacement and frequency can be obtained in closed form via the IFM. Closed form reanalysis formulae can also be generated. Computational experiments reported here show that reanalysis and gradient generation can be performed efficiently by this approach.