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Vibro-acoustic response of a circular isotropic cylindrical shell under a thermal environment
, Natrajan Ganesan, Jeyaraj P, Padmanabhan C, Ganesan N.
Published in
2011
Volume: 3
   
Issue: 3
Pages: 525 - 541
Abstract
This paper presents numerical simulation studies on the vibration and acoustic response-characteristics of an isotropic cylindrical shell under a thermal environment using commercial softwares ANSYS and SYSNOISE. First, the critical buckling temperature is obtained, followed by modal and harmonic response analyses considering pre-stress due to the thermal field in the cylindrical shell, with the critical buckling temperature as a parameter. The vibration response predicted is then used to compute the sound radiation. It is found that there is a significant change in the vibration mode shapes and ring frequency towards the lowest natural frequency with an increase in temperature. There is a sudden increase in overall sound power level near the critical buckling temperature and significant changes in mode shapes with temperature does not affect the overall sound power level.
About the journal
JournalInternational Journal of Applied Mechanics
ISSN17588251
Open AccessNo
Concepts (22)
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    ANSYS/SYSNOISE
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    BUCKLING TEMPERATURE
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    Commercial software
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    Cylindrical shell
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    HARMONIC RESPONSE
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    Mode shapes
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    NUMERICAL SIMULATION STUDIES
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    OVERALL SOUND POWER LEVELS
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    Pre-stress
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    RING FREQUENCY
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    SOUND RADIATIONS
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    SYSNOISE
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    Thermal buckling
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    Thermal environment
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    THERMAL FIELD
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    Vibration modes
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    VIBRATION RESPONSE
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    VIBRO ACOUSTIC RESPONSE
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    Acoustic wave propagation
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    Buckling
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    Cylinders (shapes)
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    Shells (structures)