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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 6    No. 1    March 1996

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NATURAL FREQUENCY OF COMPONENT UNDER INFLUENCE OF WELDING RESIDUAL STRESS
Gao Yongyi1,Lin Lichuan2

.Department of Physics,Xiangtan Teacher's College,Xiangtan 411100;
2.Central South Univesity of Technology,Changsha 410083

Abstract:According to the distribution feature of welding residual stress on plate with weldingseam along axis,a mathematical model of the welding residual stress is established. A fotmula of natu-de-- alltheral frequency of four boundary simply-supported quadrate thin plate with welding residual stress isveloped. Some conclusions have been obtained. 'THey are:(1)if there is welding residual stress  all natural frequencies of component are in increase,( 2 ) change of high ranknatural frequency under the influence ofresidual stress is larger ihaa that of low rank natural frequency. and the higher the rank number is,the larger the absolute amount of change of natural frequency is.

 

Key words: mathematical model  residual stress  natural frequency  welding  quadrate thin plate

ISSN 1672-7029
CN 43-1423/U

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