BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:On energy and momentum transfer to fully clamped flexible structur
 es in underwater explosions and air blast - Dr P J Tan\, University Colleg
 e London
DTSTART:20131129T140000Z
DTEND:20131129T150000Z
UID:TALK47877@talks.cam.ac.uk
CONTACT:Ms Helen Gardner
DESCRIPTION:The momentum transfer by a planar wave impinging upon a rigid\
 , freestanding plate in water\, a largely incompressible medium\, is well 
 understood [1]. Kambouchev et al. [2] extended the results of Taylor [1] t
 o include the nonlinear effects of compressibility whilst Hutchinson [3] h
 as addressed the issues of energy and momentum transfer to a rigid\, frees
 tanding plate. In this presentation\, key conclusions from the aforementio
 ned studies will be critically re-examined in the context of a flexible\, 
 `fully-clamped' elasto-plastic beam both under water and in air. The dynam
 ic response of the elasto-plastic beam will be modelled as an equivalent s
 ingle-degree-of-freedom (SDOF) system. A numerical method based on a Lagra
 ngian formulation of the Euler equations of compressible flow and conventi
 onal shock-capturing techniques\, similar to that employed in [2\, 3]\, ar
 e employed to solve numerically the interaction between the blast wave and
  beam. Particular emphasis will be placed on elucidating the energy and mo
 mentum transferred to the structure compared to its rigid\, freestanding c
 ounterpart\, and on whether enhancement in the beneficial effects of FSI r
 emains\, with or without fluid compressibility\, and to what extent. \n\n\
 nReferences\n\n[1] G. I. Taylor\, in: The pressure and impulse of submarin
 e explosion waves on plates\, edited by G.K. Batchelor\, Vol.3 of The Scie
 ntific Papers of Sir Geoffrey Ingram Taylor\, Cambridge University Press\,
  Cambridge (1963) 287–303.\n[2] N. Kambouchev\, L. Noels\, R. Radovitzky
 \, Nonlinear compressibility effects in fluid-structure interaction and th
 eir implications on the air-blast loading of structures\, J. Appl. Phys. 1
 00 (2006) 063519.\n[3] J. W. Hutchinson\, Energy and momentum transfer in 
 air shocks\, ASME J. Appl. Mech. 76 (5) (2009) 051307.
LOCATION:Oatley Seminar Room\, Department of Engineering
END:VEVENT
END:VCALENDAR