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http://dx.doi.org/10.5762/KAIS.2020.21.1.373

Structural Analysis of Damping Hinge for Built-in Side-by-Side Refrigerator and Design Improvement of Bracket Pin to Reduce Stress Concentration  

Lee, Boo-Youn (Dept. of Mechanical & Automotive Engineering, Keimyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.1, 2020 , pp. 373-379 More about this Journal
Abstract
This study performed stress and fatigue life analysis of the damping hinge of a built-in side-by-side refrigerator that occurs when the door is opened to the maximum angle. An analysis of the initial design showed that stress concentration occurred at the corner between the cylinder and upper disk of the bracket pin, and the maximum stress exceeded the yield strength. The maximum stress location and the calculated fatigue life were consistent with the door opening-and-closing endurance test results for a prototype. Three cases of design improvement for the bracket pin were derived with the aim of reducing the stress concentration that appeared in the initial design. An analysis of the cases showed that inserting a fillet between the disk and the cylinder of the bracket pin reduced the stress and increased the fatigue life. Moreover, changing the disk into two steps was more favorable. In conclusion, the best design improvement was the case that the disk was changed to two steps and the fillet with a large radius was inserted. In that case, the stress was the smallest and the fatigue life was infinite.
Keywords
Bracket Pin; Built-in Side-by-Side Refrigerator; Damping Hinge; Stress Concentration; Fatigue Life;
Citations & Related Records
Times Cited By KSCI : 12  (Citation Analysis)
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