Tae-Hoon Lee
Inha University
20 Papers
43 Citations
Tae-Hoon Lee is an academic researcher from Inha University. The author has contributed to research in topics: Magnetorheological fluid & Damper. The author has an hindex of 5, co-authored 20 publications.
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Papers
Design and damping force characterization of a new magnetorheological damper activated by permanent magnet flux dispersion
Abstract: This work proposes a novel type of tunable magnetorheological (MR) damper operated based solely on the location of a permanent magnet incorporated into the piston. To create a larger damping force variation in comparison with the previous model, a different design configuration of the permanent-magnet-based MR (PMMR) damper is introduced to provide magnetic flux dispersion in two magnetic circuits by utilizing two materials with different magnetic reluctance. After discussing the design configuration and some advantages of the newly designed mechanism, the magnetic dispersion principle is analyzed through both the formulated analytical model of the magnetic circuit and the computer simulation based on the magnetic finite element method. Sequentially, the principal design parameters of the damper are determined and fabricated. Then, experiments are conducted to evaluate the variation in damping force depending on the location of the magnet. It is demonstrated that the new design and magnetic dispersion concept are valid showing higher damping force than the previous model. In addition, a curved structure of the two materials is further fabricated and tested to realize the linearity of the damping force variation.
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Control performance of an electrorheological valve based vehicle anti-lock brake system, considering the braking force distribution
TL;DR: In this article, the authors presented the braking control performance of a vehicle anti-lock brake system featuring an electrorheological (ER) fluid, and a hydraulic booster for amplifying the field-dependent pressure drop obtained from the ER valve is constructed and its pressure amplification is demonstrated by presenting the pressure tracking control performance.
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Design and Analysis of a New Magnetorheological Damper for Generation of Tunable Shock-Wave Profiles
TL;DR: In this paper, a new impact testing system with an integrated magnetorheological (MR) damper is proposed, and its dynamic characteristics are analyzed, and the experimental results of impact test showed that the dual shockwave profile can be altered by changing the intensity of the magnetic field.
A Shock Mitigation of Pedestrian-Vehicle Impact Using Active Hood Lift System: Deploying Time Investigation
TL;DR: In this paper, the authors investigated the deploying time of an active hood lift system (AHLS) activated by a gunpowder actuator and determined the response time for deploying the hold lift system by changing principal design parameters of the latch part mechanism of the hood system.
Deploying time investigation of automotive active hood lift mechanism with different design parameters of hinge part
TL;DR: In this article, the authors investigated the change in deploying time of an active hood lift mechanism of a passenger vehicle activated by a gunpowder actuator and found that the deploying time is inv...
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