The Finite Element Analysis and Shape Optimization on Spring of Magnetic Card Reader Head

• Main Authors: Zhang, You-Jay, 張佑傑
• Other Authors: Hung, Ching-Hua
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/37109598897622673513

碩士 === 國立交通大學 === 機械工程系所 === 103 === Magnetic card reader are widely used in many kinds of application such as credit card processing system, automated teller machine and pay telephone. The spring which mount magnetic card reader head usually suffers from fatigue failure with long period of usage. In the other hand, the reaction force of the reader head might be too high to wear the magnetic stripe if the spring is designed too robust. The propose of this thesis is to improve the fatigue strength and to constrain the reaction force of the spring. In this research, the finite element software ABAQUS/Standard was adopted to analyze different designs of the spring to find the key point that causes fatigue failure. The simulated results were verified experimentally. Finally the software SmartDO was adopted to optimize the spring shape. Verification experiments were conducted and the consistency with respect to the optimization results revealed the usefulness of this research.