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Title:

Comparison of Eigenmode based and random field based imperfection modeling for the stochastic buckling analysis of I-section beam-columns

Author(s):
Stavrev, A.; Stefanov, D.; Schillinger, D.; Rank, E.
Abstract:
The uncertainty of geometric imperfections in a series of nominally equal I-beams leads to a variability of corresponding buckling loads. Its analysis requires a stochastic im- perfection model, which can be derived either by the simple variation of the critical Eigenmode with a scalar random variable, or with the help of the more advanced theory of random fields. The present paper first provides a concise review of the two different modeling approaches, covering theoretical background, assumpti...     »
Keywords:
Finite element analysis; Stochastic buckling analysis; I-section beam-columns; Eigenmode based imperfection modeling; Random field based imperfection modeling
Journal title:
International Journal of Structural Stability and Dynamics
Year:
2012
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