000004747 001__ 4747
000004747 005__ 20141119144550.0
000004747 04107 $$aeng
000004747 046__ $$k2002-06-02
000004747 100__ $$aSchafer, Benjamin W.
000004747 24500 $$aFEM IMPLEMENTATION OF KOITER’S ASYMPTOTIC POST-BUCKLING PREDICTION WITH APPLICATION TO STOCHASTIC POST-BUCKLING ANALYSIS

000004747 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004747 260__ $$bColumbia University in the City of New York
000004747 506__ $$arestricted
000004747 520__ $$2eng$$aIn proper structural design it is critical to consider not only the elastic buckling behavior, but also the postbuckling response. Koiter showed the importance of postbuckling response parameters for better understanding strength and imperfection sensitivity of structures. Koiter’s perturbation method provides an efficient prediction of the postbuckling path for elastic structures. More recent work has focused on a finite element implementation of Koiter’s method that is more convenient for typical computational structural analyses. When considering the effects of inherent randomness in the structural parameters on the postbuckling path of a structure, this convenience and efficiency is particularly critical. In this work, Monte Carlo simulation techniques are used to study the effects of random elastic moduli on the postbuckling response of some simple frame structures. This analysis provides a deeper understanding of the variability in anticipated postbuckling response that could provide highly valuable design considerations. A first-order analytical approximation to the mean and variance of the postbuckling behavior is proposed as a means of curtailing the need for a high number of sample simulations.

000004747 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004747 653__ $$abuckling, postbuckling, perturbation, stochastic models, simulation

000004747 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004747 720__ $$aSchafer, Benjamin W.$$iGraham, Lori
000004747 8560_ $$ffischerc@itam.cas.cz
000004747 8564_ $$s2445325$$uhttp://invenio.itam.cas.cz/record/4747/files/272.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004747 962__ $$r4594
000004747 980__ $$aPAPER