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2-Step Drop Impact Analysis of a Miniature Mobile Haptic Actuator Considering High Strain Rate and Damping Effects

Department of Mechanical Engineering, Ajou University, Su-won Si 16499, Korea
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Micromachines 2019, 10(4), 272; https://doi.org/10.3390/mi10040272
Received: 11 March 2019 / Revised: 28 March 2019 / Accepted: 7 April 2019 / Published: 23 April 2019
(This article belongs to the Special Issue Product/Process Fingerprint in Micro Manufacturing)
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Abstract

In recent times, the haptic actuators have been providing users with tactile feedback via vibration for a realistic experience. The vibration spring must be designed thin and small to use a haptic actuator in a smart device. Therefore, considerable interests have been exhibited with respect to the impact characteristics of these springs. However, these springs have been difficult to analyze due to their small size. In this study, drop impact experiments and analyses were performed to examine the damages of the mechanical spring in a miniature haptic actuator. Finally, an analytical model with high strain rate and damping effects was constructed to analyze the impact characteristics. View Full-Text
Keywords: haptic actuator; impact analysis; high strain rate effect; damping; 2-step analysis haptic actuator; impact analysis; high strain rate effect; damping; 2-step analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Choi, B.; Choi, H.; Kang, Y.-S.; Jeon, Y.; Lee, M.G. 2-Step Drop Impact Analysis of a Miniature Mobile Haptic Actuator Considering High Strain Rate and Damping Effects. Micromachines 2019, 10, 272.

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