Assessment of non-adiabatic behaviour in thermoelastic stress analysis of small scale components
Wang, W.J., Dulieu-Barton, J. M. and Li, Q. (2010) Assessment of non-adiabatic behaviour in thermoelastic stress analysis of small scale components. Experimental Mechanics, 50, 449-461. (doi:10.1007/s11340-009-9249-2).
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The classical thermoelastic equation and the
generalized heat conduction equation are developed to deal
with a non-adiabatic response in thermoelastic stress
analysis. A FE simulation procedure is set up to solve the
heat conduction equation over a range of loading frequencies.
A small disc (20 mm diameter) loaded under threepoint
diametric compression is used to examine the effect
of in-plane heat conduction. As the disc has regions of zero,
moderate and high stress gradients it is an ideal component
for this analysis. A regime is developed that provides a
basis for an assessment of the nature of the response and
allows a minimum loading frequency to be identified so
that adiabatic behaviour is obtained. This validity of this
approach is demonstrated on steel disc of 20 mm diameter.
A special loading device has been designed to obtain the
three-point loading and a recently introduced Instron Electropuls test machine is used to achieve the high levels
of cyclic loading required for the adiabatic conditions.
|Keywords:||Thermoelastic stress analysis . Non adiabatic behaviour . Small scale testing|
|Subjects:||T Technology > TJ Mechanical engineering and machinery|
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
|Date Deposited:||14 Sep 2009|
|Last Modified:||27 Mar 2014 18:48|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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