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Residual stresses and initial imperfections in non-linear analysis

Author
Pastor, M.M.; Bonada, J.; Roure, F.; Casafont, M.
Type of activity
Journal article
Journal
Engineering structures
Date of publication
2013-01
Volume
46
First page
493
Last page
507
DOI
https://doi.org/10.1016/j.engstruct.2012.08.013 Open in new window
Repository
http://hdl.handle.net/2117/16636 Open in new window
URL
http://www.sciencedirect.com/science/journal/01410296 Open in new window
Abstract
When non-linear finite element analysis (FEA) of cold-formed thin-walled steel sections subject to compression is carried out, an initial perturbation must be introduced in the model in order to trigger the failure due to instability. The most usual way is to introduce an equivalent initial imperfection in the model (conventional models) that includes the effects of geometric imperfections and residual stresses due to the roll-forming manufacturing process, possible loading eccentricity, etc. It...
Citation
Pastor, M. [et al.]. Residual stresses and initial imperfections in non-linear analysis. "Engineering structures", Gener 2013, vol. 46, núm. January, p. 493-507.
Keywords
Cold-formed steel sections, FE analysis, Geometric imperfections, Residual stresses
Group of research
REMM - Structures and Mechanics of Materials Research