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SUMMARY:Dynamic mechanisms in hierarchical structures ranging from steel f
 rames\, 3D lattice materials to bio-inspired metallic-ceramic cellular str
 uctures - Stefan Szyniszewski\, Durham University
DTSTART:20200207T150000Z
DTEND:20200207T160000Z
UID:TALK139057@talks.cam.ac.uk
CONTACT:Dr Maria Marques de Carvalho
DESCRIPTION:The talk will begin with an overview of buckling mechanisms\, 
 which occur at various levels in hierarchical structures under global comp
 ressive loads. Elastic buckling can be a useful tool in designing reversib
 le mechanisms\, while plastic buckling is an efficient way of dissipating 
 energy\, with an automotive crushing tube a notable example. The talk will
  progress to more complex mechanisms in bio-inspired\, metallic\ncellular 
 structures\, which involve not only mechanical deformations but also wave 
 propagation and chemical reactions under extreme loads such as blast and i
 mpact. Chemical energy dissipation and a potential for creating mechanisms
 \, which benefit from the interplay between chemical length scales and ove
 rall structural features will be touched upon briefly. Lastly\, we will di
 scuss some fundamental problems of \ncomputational mechanics\, which emerg
 e from studying hierarchical structures such as stochastic material featur
 es and novel material characterisation techniques.\n
LOCATION:Seminar Room\, Civil Engineering Building\, JJ Thomson Avenue 7a.
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