100 0

Dynamic stress analysis of the specimen gauge portion with a circular profile for the ultrasonic fatigue test

Title
Dynamic stress analysis of the specimen gauge portion with a circular profile for the ultrasonic fatigue test
Author
최낙삼
Keywords
Ultrasonic fatigue test; Resonance; Finite element analysis; Stress concentration
Issue Date
2016-11
Publisher
ELSEVIER SCI LTD
Citation
INTERNATIONAL JOURNAL OF FATIGUE, v. 92, Page. 71-77
Abstract
An hourglass-shaped specimen has been utilized for the ultrasonic fatigue test (UFT) at a resonance frequency around 20 kHz. Although the gauge portion of the actual test specimens was made with a circular arc shape, the stress along the gauge portion has been measured by the conventional stress equation assuming a gauge portion with the form of a hyperbolic cosine. In this study, stress distribution results by finite element analysis (FEA) in forced resonant vibration mode showed that the shape of a circular arc caused considerably higher stresses at the center of the gauge portion than did the hyperbolic cosine. The error of the stress equation occurring due to the difference in the gauge portion profile was compensated for by using the forced vibration factor (C-1) and the gauge shape factor (C-2). Thus, stress concentration effects in specimens with various gauge lengths were quantified to determine the actual fatigue strength. (C) 2016 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0142112316301761https://repository.hanyang.ac.kr/handle/20.500.11754/71306
ISSN
0142-1123; 1879-3452
DOI
10.1016/j.ijfatigue.2016.06.032
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE