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Substantiation of Thin-Walled Structures Parameters Using Nonlinear Models and Method of Response Surface Analysis

Authors :
Bondarenko, Maryna
Tkachuk, Mykola
Grabovskiy, Andriy
Hrechka, Iryna
Source :
International Journal of Engineering Research in Africa; February 2010, Vol. 1 Issue: 1 p32-43, 12p
Publication Year :
2010

Abstract

The article deals with the development of approach for providing of structural strength of complicated thin-walled machine-building structures, which operate in the conditions of geometric and physical nonlinearities using design solution validation. The developed approach is based on the use of mathematical model for stress-strain state taking into account geometric and physical nonlinearities and methods of approximation for constructing functions describing the evaluated characteristics of the object under study. The various factors behind the search for design solutions (including characteristics of strength, rigidity, technological and economic factors), are being added into this function. The developed algorithm for rational parameters search, which takes into account the peculiarities of the response surface shape observed in solving applied problems, is applied to them. In this case, the solution is sought over the whole range of parameter changes. Thus, in the search process, global trends of changes in design decisions are taken into account, and not local ones, as in other approaches. This allows obtain a rational solution that is stable to changes in parameters, which are possible in course of design work and production conditions. Investigations are illustrated on the freight rail-car, tractor cabin frame, carrier personnel hull.

Details

Language :
English
ISSN :
16633571
Volume :
1
Issue :
1
Database :
Supplemental Index
Journal :
International Journal of Engineering Research in Africa
Publication Type :
Periodical
Accession number :
ejs50891861
Full Text :
https://doi.org/10.4028/www.scientific.net/JERA.44.32