Magnetorheological Elastomer (MRE) based torsional vibration isolator for application in a prototype drilling shaft
المؤلف | Syam, Thaer Mahmoud |
المؤلف | Abdul Muthalif, Asan Gani Bin |
تاريخ الإتاحة | 2021-10-18T06:52:16Z |
تاريخ النشر | 2021 |
اسم المنشور | Qatar University Annual Research Forum and Exhibition (QUARFE 2021) |
الاقتباس | Syam T. M., Abdul M. A. G., "Magnetorheological Elastomer (MRE) based torsional vibration isolator for application in a prototype drilling shaft", Qatar University Annual Research Forum and Exhibition (QUARFE 2021), Doha, 20 October 2021, https://doi.org/10.29117/quarfe.2021.0047 |
الملخص | Magnetorheological Elastomer (MRE) is a type of smart composite material consisting of a polymer matrix embedded with ferromagnetic particles. In the presence of an external magnetic field, its mechanical properties, such as stiffness, changes make it attractive in vibration isolation applications. Unwanted vibration in machines can cause severe damage and machine breakdown. In Qatar, the extraction of the natural gas from the ground requires sophisticated drilling machines. In this work, a semi-active vibration isolator using MRE is proposed for a potential application in a drilling system to isolate the torsional vibration. MRE was fabricated with a 35% mass fraction (MF) consisting of silicon rubber and iron particles. It was fitted with aluminum couplers and attached to the shaft (drill string) to study its efficiency in vibration isolation under a magnetic field. Two tests were conducted on the drilling prototype setup used in this work; the first test was a hammer impact test. The torsional transfer function TTF analysis showed that the system's natural frequency has shifted from 13.9 Hz to 17.5 Hz by the influence of increasing magnetic field around the MRE. The results showed that the continuous rotational vibration amplitude of the prototype is attenuated by more than 40%. |
اللغة | en |
الناشر | Qatar University Press |
الموضوع | Drilling process Magnetorheological elastomer Smart materials Torsional vibration isolation |
النوع | Poster |
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