Development of an isolator working with magnetorheological elastomers and fluids. (15th January 2017)

• Record Type: Journal Article
• Authors: Sun, S.S.; Yang, J.; Li, W.H.; Du, H.; Alici, G.; Yan, T.H.; Nakano, Masami
• Is Part Of: Mechanical systems and signal processing. Volume 83(2017)
• Page Start: 371
• Page End: 384
• Publication Date: 2017-01-15
• Subjects: Variable stiffness and damping -- MRF unit -- MRE unit -- Modelling; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2016.06.020
• Languages: English
• ISSNs: 0888-3270

Abstract

Abstract: This paper reports an isolator whose damping and stiffness can be simultaneously controlled by magnetorheological (MR) fluids and MR elastomers. A hydraulically actuated MTS machine was used to test this variable stiffness and damping isolator after its prototype. The field-dependent responses including stiffness variability and damping variability, together with the amplitude-dependent response and frequency-dependent responses were separately tested and analyzed successively. The experimental results prove the successful implementation of the as-designed MRE-F isolator with obvious variable damping and stiffness. A new phenomenological model incorporating Bingham model and four-parameter model was developed to describe the dynamic properties of the isolator. The successful development, experimental testing, and modelling of this innovative variable stiffness and damping isolator make the concept of variable stiffness and damping become feasible. Highlights: Both MRF and MRE are used to realize damping and stiffness controllability. The compact structure of the new isolator makes its practical application possible. Its damping and stiffness controllability is experimentally verified. A new model was developed to predict the performance of the isolator.