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SUMMARY:Cars\, aeroplanes\, and quantum physics: Why complexity makes life
  simpler for the vibration engineer - Professor Robin Langley FREng. Depar
 tment of Engineering\, University of Cambridge
DTSTART:20260202T180000Z
DTEND:20260202T190000Z
UID:TALK235249@talks.cam.ac.uk
CONTACT:Beverley Larner
DESCRIPTION:One of the many outstanding achievements of G I Taylor was the
  discovery of relatively simple statistical laws that apply to highly comp
 lex turbulent flows.  The emergence of simple laws from complexity is well
  known in other branches of physics\, for example the emergence of the law
 s of heat conduction from molecular dynamics.  Complexity can also arise a
 t large scales\, and the structural vibration of an aircraft or a car can 
 be a surprisingly difficult phenomenon to analyse\, partly because million
 s of degrees of freedom may be involved\, and partly because the vibration
  can be extremely sensitive to small changes or imperfections in the syste
 m. In this talk it is shown that the prediction of vibration levels can be
  much simplified by the derivation and exploitation of emergent laws\, ana
 logous to some extent to the heat conduction equations\, but with an added
  statistical aspect\, as in turbulent flow. The emergent laws are discusse
 d and their application to the design of aerospace\, marine\, and automoti
 ve structures is described.  As an aside it will be shown that the same em
 ergent theory can be applied to a range of problems involving electromagne
 tic fields. 
LOCATION:Bristol-Myers Squibb Lecture Theatre\, Department of Chemistry
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