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http://dx.doi.org/10.14775/ksmpe.2020.19.02.081

Stress Analysis and Design Improvement to Prevent Failure of the Damping Hinges of Built-in Refrigerators  

Lee, Boo-Youn (Dept. of Mechanical & Automotive Engineering, KEIMYUNG UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.2, 2020 , pp. 81-88 More about this Journal
Abstract
The damping hinge of a built-in refrigerator was examined in terms of its stress and fatigue life. Analysis of the initial design showed that stress concentration occurred at the concave surface of the hinge lever, which was broken during the door opening-and-closing endurance test of the prototype. The maximum von Mises stress at this location exceeded the yield strength. In addition, Goodman fatigue analysis of the initial design showed that the fatigue life at this location was consistent with the failure observed during the endurance test. Based on these results, an improved design for the damping hinge was derived. Analysis of this improved design showed that the stress concentration in the hinge lever of the initial design was eliminated. In this case, the maximum stress occurred at the position where the hinge lever was in contact with the door stopping pin, and the maximum von Mises stress was smaller than the yield strength. Goodman fatigue analysis of the improved design indicated that the fatigue life of the entire damping hinge was infinite. It was therefore concluded that the improved design does not suffer from fatigue damage during the endurance test.
Keywords
Built-in Refrigerator; Damping Hinge; Hinge Lever; Stress Analysis; Fatigue Life;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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