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Jurgen Becque, University of Cambridge
Friday 27 November 2020, 15:00-16:00
Towards a theory of inelastic stability
- 👤 Speaker: Jurgen Becque, University of Cambridge
- 📅 Date & Time: Friday 27 November 2020, 15:00 - 16:00
- 📍 Venue: Zoom (email structures-admin@eng.cam.ac.uk for link)
Abstract
The theory of elastic stability has been a great triumph in structural engineering and underpins the practical design methodologies of a wide range of structural elements and systems. Several important metals, however, such as aluminium and stainless steel alloys, only exhibit a very limited linear elastic range, display gradual yielding and extensive strain hardening, and cannot be designed using the design methodologies applicable to carbon steel. A suitable theory of inelastic stability, on the other hand, is still in its infancy, held back by an almost century-old theoretical hurdle dubbed the ‘plastic buckling paradox’. We will investigate the nature and origins of this paradox, and propose a solution based on a consistent application of plastic flow theory. Some new developments originating from this break-through, related to buckling of inelastic plates and columns, will be presented.
Series This talk is part of the Engineering Department Structures Research Seminars series.
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