BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:On Reduced Order Models for Jointed Structures - Dr Paolo Tiso\, E
 TH Zurich
DTSTART:20240517T150000Z
DTEND:20240517T160000Z
UID:TALK213316@talks.cam.ac.uk
CONTACT:46601
DESCRIPTION:Structural assemblages\, found in automotive\, civil and aeros
 pace applications\, exhibit nonlinearities due to contact and friction occ
 urring at joint interfaces. For instance\, damping is heavily affected by 
 the contact state and evolution during motion and depends on the vibration
  amplitude and shape. Moreover\, system parameters as macroscopic manufact
 uring imperfections\, bold preloads\, and material properties play a major
  role in affecting the structural behaviour.\n\nSurrogate models of whole 
 joints have been employed in structural dynamics for decades. While offeri
 ng a compact\, overall description of the joint behaviour\, they heavily r
 ely on calibration for expensive experimental campaigns. Therefore\, they 
 are not accurate outside their calibration window. Moreover\, the detailed
  interface state (contact stresses\, local opening/closing\, slipping/stic
 king regions\, etc) cannot be retrieved.\n\nAt the other end of the spectr
 um\, high-fidelity finite element models can deliver very accurate represe
 ntation of the dynamic contact state at the interfaces. Unfortunately\, su
 ch models are computationally extremely expensive and cannot be used for d
 esign and monitoring.\n\nReduced order models can provide\, in principle\,
  fast versions of high-fidelity models when the solution is assumed to liv
 e on a manifold\, either flat or curved. However\, the construction of suc
 h manifold and the efficient treatment of nonlinearities are nontrivial ta
 sks for jointed structures.\n\nIn this talk\, we review the state of the a
 rt of reduced order models for joints\, and present some recent work perfo
 rmed in our group. We conclude by giving some perspective on industrial ne
 eds and research directions.
LOCATION:JDB Seminar Room\, CUED
END:VEVENT
END:VCALENDAR