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http://dx.doi.org/10.3795/KSME-A.2014.38.7.711

Dynamic Analysis of Specimen Under Ultrasonic Fatigue Using Finite Element Method  

Myeong, No-Jun (Dept. of Mechanical Engineering, Hanyang Univ.)
Choi, Nak-Sam (Dept. of Mechanical Engineering, Hanyang Univ.)
Kwon, Hena (MedisourcePlus)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.7, 2014 , pp. 711-717 More about this Journal
Abstract
An accelerated ultrasonic fatigue test (UFT) was used for analyzing very high cycle fatigue (VHCF, $N_f$ > $10^7$) behaviors of a specimen with a test resonance of 20 kHz. Using the finite element method (FEM), the dynamic behaviors of the specimen was studied by calculating the stresses along its gauge portion, with displacement. The shape of gauge portion profile was assumed to be a hyperbolic according to the stress equation of the UFT. However, as the specimen used in the test had a circular arc profile, the FEM was used for studying the local stresses for two cases of the gauge profile. The results were compared with those obtain from the stress equation of the UFT. The dynamic behavior of the gauge portion could be understood for further comparison with the actual results.
Keywords
Ultrasonic fatigue test; Resonance; Very high cycle fatigue;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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