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SUMMARY:Nonlinear mechanics and design of prestressed stayed columns - Pro
 fessor M. Ahmer Wadee\, Department of Civil &amp\; Environmental Engineeri
 ng\, Imperial College London\, UK
DTSTART:20171201T150000Z
DTEND:20171201T160000Z
UID:TALK95818@talks.cam.ac.uk
CONTACT:Karen Mitchell
DESCRIPTION:Abstract:\nMetallic columns supported by prestressed cable sta
 ys offer an efficient and aesthetic structural\nsolution\, which use highl
 y slender structural elements\, with substantially increased load carrying
 \ncapacity when compared to conventional compression members. The system w
 orks by employing\nprestressing cables external to the main column that ef
 fectively introduce intermediate elastic\nlateral restraints\; these act t
 o reduce the buckling length whereby the load carrying capacity is\nincrea
 sed. However\, structures that are optimized may also be susceptible to mo
 re complex failure\nmodes\, such as interactive and cellular buckling\, wh
 ich can lead to a considerable reduction in the\npost-buckling strength an
 d stiffness. This is confirmed by mathematical and numerical modelling\,\n
 alongside full-scale laboratory experiments. In the talk\, developments ov
 er the last 10 years will be\ndiscussed including analytical\, numerical a
 nd experimental work that has led to detailed design\nprocedures and recom
 mendations for a variety of column arrangements.\n\nBiography:\nAhmer Wade
 e was appointed Professor of Nonlinear Mechanics at Imperial College Londo
 n in\n2015 having been an academic staff member there since 1999. He was e
 ducated both at Imperial\,\nobtaining a BEng in Civil Engineering in 1994 
 and an MSc in Structural Steel Design in 1995.\nSubsequently\, he obtained
  his PhD from the Department of Mechanical Engineering at the\nUniversity 
 of Bath under the supervision of Professor Giles Hunt in 1998. Professor W
 adee leads\nthe group investigating nonlinear instabilities in structural 
 components\, systems and materials. The\nresearch conducted has ranged fro
 m fundamental mathematical modelling of nonlinear instabilities\nin struct
 ures at various scales\, right through to producing code-ready design guid
 ance. He has\ncontributed to over 140 articles in the leading internationa
 l journals and peer-reviewed conference\nproceedings. He has been the reci
 pient of prizes for his research work by the Institution of Civil\nEnginee
 rs and the Institute of Mathematics and its Applications (IMA). He is a Ch
 artered Scientist\,\nChartered Mathematician\, Fellow of the Institute of 
 Mathematics and its Applications\, and the\ncurrent chair of the Engineeri
 ng Mechanics Institute Stability Committee organized by the American\nSoci
 ety of Civil Engineers. He also serves on the Editorial Board of “Struct
 ures”\, the recently\nfounded research journal of the Institution of Str
 uctural Engineers. In 2014\, he was recognised by\nThe Science Council as 
 one of the top 100 practising scientists in the UK. He was also a co-edito
 r\nof the book “50 Visions of Mathematics”\, published by Oxford Unive
 rsity Press\, which\ncommemorated 50 years of the founding of the IMA in 2
 014.
LOCATION: Cambridge University Engineering Department\, LT6
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