Affiliation:
1. University of Science and Technology of China
Abstract
<div class="section abstract"><div class="htmlview paragraph">Conventional magnetorheological dampers (CMRD) generate damping force through the
flow of magnetorheological fluid in a narrow passage. However, due to the fixed
geometry of the passage, the damping force is linearly proportional to the
velocity. This structural limitation results in significant damping forces at
high speeds, severely impacting the energy dissipation efficiency of the damper.
This flaw poses a substantial threat to both occupants and mechanical
structures. In response to this limitation, this research endeavors to engineer
a novel impact-resistant MR damper (NMRD) by augmenting the traditional MR
damper’s architecture with an innovative internal channel furnished with an
embedded circular permanent magnet. During instances of high-velocity impacts,
this specialized channel selectively opens to attenuate impact forces. This
augmentation serves to significantly heighten the soft landing impact resistance
of flying cars while concurrently enhancing passenger comfort. A prototype of
this pioneering MR damper was manufactured alongside a conventional counterpart
for comparison. By simulation analysis and comprehensive experiments conducted
on an MTS machine, this study verifies the superior impact resistance of the new
MR damper. The experimental setup also encompassed drop hammer tests using a
specialized platform to assess both dampers’ performance under identical
conditions. The experimental results indicate the excellent impact resistance of
this novel impact-resistant MR damper.</div></div>
Reference16 articles.
1. Abu Bakar , S.A. ,
Jamaluddin , H. ,
Rahman , R.A.
et al.
Vehicle Ride Performance with Semi-Active
Suspension System Using Modified Skyhook Algorithm and Current Generator
Model International journal of vehicle autonomous
systems 6 3-4 2008 197 221
2. Deng , L. ,
Sun , S.S. ,
Christie , M.
et al.
Numerical Study of Rotary Magnetorheological
Seat Suspension on the Impact Protection Advances
in Applied Nonlinear Dynamics, Vibration and Control-2021: The proceedings
of 2021 International Conference on Applied Nonlinear Dynamics, Vibration
and Control (ICANDVC2021) 1 Singapore Springer 2022 1003 1017
3. Sun , S. ,
Yang , J. ,
Wang , P.
et al.
Experimental Study of a Variable Stiffness Seat
Suspension Installed with a Compact Rotary MR Damper Frontiers in Materials 8 2021 594843
4. Pratt , G.A.
and
Williamson , M.M.
Series Elastic Actuators Proceedings 1995 IEEE/RSJ International Conference on Intelligent
Robots and Systems. Human Robot Interaction and Cooperative
Robots 1 1995 399 406
5. Fu , B. ,
Liao , C. ,
Li , Z.
et al.
Effective Design Strategy for a High-Viscosity
Magnetorheological Fluid–Based Energy Absorber with Multi-Stage Radial Flow
Mode Journal of Intelligent Material Systems and
Structures 30 1 2019 127 139