Dynamic modeling and analysis of a quad horizontal damper system for transient vibration reduction in top loading washing machine

• Published in: Journal of mechanical science and technology Vol. 33; no. 3; pp. 1123 - 1130
• Main Authors: Kim, Young-Jong, Kim, Dong-Cheol, Jeong, Weui-Bong
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.03.2019; Springer Nature B.V; 대한기계학회
• Subjects: Component reliability; Control; Damping; Dynamic models; Dynamical Systems; Engineering; Horizontal loads; Industrial and Production Engineering; Luggage; Mechanical Engineering; Package design; Vibration; Vibration analysis; Vibration control; Vibration isolators; Washers & dryers; Washing machines; 기계공학; Unbalance; Transient vibration; Quad horizontal damper system; Damping force; Top loading washing machine
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-019-0210-8

The transient horizontal vibration of top loading washing machine with large capacity has been more important because of the radius of the inner tub in the washing machine increases proportionally. In this paper, we introduce a new vibration reduction technology, namely, a quad horizontal damper system for reduction of the transient horizontal vibration of top loading washing machine. And analyzes the vibration characteristics of a top loading washing machine with a quad horizontal damper system using Newtonian mechanics. For verification and validation of the established dynamic model, the displacement of an actual top loading washing machine are obtained from six laser sensors attached at the upper part and the lower part of outer tub respectively. Optimal design was carried out to ensure sufficient strength and reliability for each component of the horizontal damper. The damping force of the horizontal damper was also optimized so that the horizontal vibration in the transient state of top loading washing machine was reduced by about 35~45 % more than the conventional top loading washing machine and no abnormal noise was generated at high spin speed.