Czasopismo
2009
|
Vol. 16, No. 1
|
35-58
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
An assessment of structural reliability requires multiple evaluations of the limit state function for various realizations of random parameters of the structural system. In the majority of industrial applications the limit state functions cannot be expressed explicitly in terms of the random parameters but they are specified using selected outcomes of the FE analysis. In conseąuence, in order to be useful in practice, a structural reliability analysis program should be closely integrated with a FE module or it should be interfaced with an advanced external FE program. When the FE source code is not available, which is usually the case, the only option is to establish a communication between the reliability analysis program and an external FE software through the batch mechanism of data modification, job submission and results extraction. The main subject of this article is to present the reliability analysis capabilities of STAND software, which is being developed in the Institute of Fundamental Technological Research of Polish Academy of Sciences. A special emphasis is put on the issues related to its interfacing with external general purpose FE codes. It is shown that when shape type random variables are used, leading to modifications of the FE mesh, or when the limit state function contains numerical noise, standard algorithms for localizing the design point often fail to converge and a special method based on some response surface approximation is needed. A proposition of such a strategy that employs an adaptive response surface approximation of the limit state function is presented in this article. Development of a reliability analysis program is a challenging project and calls for such a code organization, which would facilitate a simultaneous work of many programmers and allow for easy maintenance and modifications. The so-called object-oriented programming seems to provide a convenient framework to realize these objectives. The object-oriented approach is used in STAND development. The advantages of this programming paradigm and a short description of the STAND's class hierarchy are presented in the text. The study is concluded with two numerical examples of interfacing STAND with state of the art commercial FE programs.
Rocznik
Tom
Strony
35-58
Opis fizyczny
., Bibliogr. 26 poz., rys., tab., wykr.
Twórcy
autor
autor
autor
autor
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b, 02-106 Warsaw, Poland
Bibliografia
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- [3] A. Der Kiureghian, T. Haukaas, and K. Fujimura. Structural reliability software at the university of California, Berkeley. Structural Safety, 28: 44-67, 2006
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- [16] R.E. Melchers. Structural Reliability Analysis and Predictions, 2nd Ed. Wiley, 1999.
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- [19] G.I. Schueller. Structural reliability - recent advances. In: Proc. 7th ICOSSAR'97, Kyoto, pages 3-33. Balkema, Rotterdam, 1998.
- [20] G.I. Schueller and R. Stix. A critical appraisal of methods to determine failure probabilities. Structural Safety, 4: 293-309, 1987.
- [21] R. Stocki, P. Tauzowski, and M. Kleiber. Efficient sampling techniąues for stochastic simulation of structural systems. Computer Assisted Mechanics and Engineering Sciences, 14: 127-140, 2007.
- [22] R. Stocki, P. Tauzowski, and J. Knabel. Reliability analysis of a crashed thin-walled s-rail accounting for random spot weld failures. International Journal of Crashworthiness, 13:693-706, 2008.
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- [24] B.H. Thacker, D.S. Riha, L.J. Fitch, S.H.K. Huyse, and J.B. Pleming. Probabilistic engineering analysis using the NESSUS software. Structural Safety, 28: 83-107, 2006.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BPB8-0009-0009