Thermoelastic stress analysis of structures under natural vibrations
Thermoelastic stress analysis of structures under natural vibrations
The paper focuses on stress analyses of structures subjected to excitation forces operating at resonant frequencies. The structures are analysed experimentally using the Thermoelastic Stress Analysis (TSA) technique. Experiments are carried out for fixed-free beams of different dimensions and materials, and also for a steel rectangular plate with clamped edges. These structures are excited by a shaker via a stinger. For materials with low thermal conductivity, the agreement between the theory, numerical results and experimental results is excellent. As the thermal conductivity of the material is increased, the correspondence is not as close. This is because of non-adiabatic behaviour. The implications of these results are discussed in detail in the paper and a means of deriving the severity of heat transfer is provided. Other factors that influence the TSA results from structures under natural loading are also discussed.
thermoelastic stress analysis, natural frequency, principal stresses, adiabatic conditions, thermal conductivity
463-472
Phan, T.S.
ef3f9612-4313-4ec9-bbd2-df96729cfdb6
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf
May 2006
Phan, T.S.
ef3f9612-4313-4ec9-bbd2-df96729cfdb6
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf
Phan, T.S., Dulieu-Barton, J.M. and Temarel, P.
(2006)
Thermoelastic stress analysis of structures under natural vibrations.
Experimental Mechanics, 46 (4), .
(doi:10.1007/s11340-006-8445-6).
Abstract
The paper focuses on stress analyses of structures subjected to excitation forces operating at resonant frequencies. The structures are analysed experimentally using the Thermoelastic Stress Analysis (TSA) technique. Experiments are carried out for fixed-free beams of different dimensions and materials, and also for a steel rectangular plate with clamped edges. These structures are excited by a shaker via a stinger. For materials with low thermal conductivity, the agreement between the theory, numerical results and experimental results is excellent. As the thermal conductivity of the material is increased, the correspondence is not as close. This is because of non-adiabatic behaviour. The implications of these results are discussed in detail in the paper and a means of deriving the severity of heat transfer is provided. Other factors that influence the TSA results from structures under natural loading are also discussed.
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Submitted date: September 2005
Published date: May 2006
Keywords:
thermoelastic stress analysis, natural frequency, principal stresses, adiabatic conditions, thermal conductivity
Organisations:
Fluid Structure Interactions Group
Identifiers
Local EPrints ID: 39333
URI: http://eprints.soton.ac.uk/id/eprint/39333
ISSN: 1741-2765
PURE UUID: 6aba005d-d38c-4b13-ae1b-0b62ecddbc5d
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Date deposited: 27 Jun 2006
Last modified: 16 Mar 2024 02:45
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Author:
T.S. Phan
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