|
|
|
Design considerations and experimental studies
on semi-active smart pin joint |
| Yancheng LI1,Jianchun LI1,Bijan SAMALI1,Jiong WANG2, |
| 1.Centre for Built Infrastructure
Research, School of Civil and Environmental Engineering, Faculty of
Engineering and Information Technology, University of Technology Sydney,
NSW 2007, Australia; 2.School of Mechanical
Engineering, Nanjing University of Science and Technology, Nanjing
210094, China; |
|
|
|
|
Abstract Hostile dynamic loadings such as severe wind storms, earthquakes, and sudden impacts can cause severe damage to many civil engineering structures. An intelligent structural system equipped with smart structural members that are controllable in real-time is an effective solution to structural damage and failure during such situations. Civil intelligent structures with controllable properties to adapt to any changes due to dynamic loadings can lead to effective protection of structures and their occupants. In this paper, design and testing of a semi-active magnetorheological (MR) pin joint, in which the moment resistance can be controlled in real-time by altering the magnetic field, is reported with the view of using it as a potential candidate for smart members in the development of intelligent structures. Design of prototype smart pin joints includes theoretical analysis related to the radius of the rotary plate, the property of MR fluids and the gap between the rotary plate and the casing based on the requirements of the dynamics of MR pin joints. FEM analysis was deployed to study the distribution of the magnetic field along the gap. It is found, from the theoretical analysis and experimental verification, that the MR pin joint with a diameter of 180 mm can produce a torque of up to 30 Nm, which meets requirements for semi-active members in a multi-storey prototype building model in the next stage of research and development.
|
| Keywords
magnetorheological (MR) fluids
smart pin joint
design consideration
|
|
Issue Date: 05 December 2009
|
|
|
Jolly M R,?Bender J W, Carlson J D. Properties and applications of commercial magnetorheologicalfluids. In: Proceedings of the SPIE 5thInternational Symposium on Smart Structures and Materials, San Diego,CA, USA, 1998, 262―275
|
|
Carlson J D, Catanzarite D M, Clair K A S. Commercial magnetorheological fluid devices. International Journal of Modern Physics B, 1996, 10(23/24): 2857―2865
doi: 10.1142/S0217979296001306
|
|
Felt D W, Hagenbuchle M, Liu J, Richard J. Rheologyof a magnetorheological fluid. Journalof Intelligent Material Systems and Structures, 1996, 7(5): 589―593
doi: 10.1177/1045389X9600700522
|
|
Dogruer U, Gordaninejad F, Evrensel C A. A new magneto-rheological fluid damper for high-mobilitymulti-purpose wheeled vehicle (HMMWV). Journal of Intelligent Material Systems and Structures, 2008, 19(6): 641―650
doi: 10.1177/1045389X07078213
|
|
Zhao Y, Choi Y T, Wereley N M. Semi-active damping of ground resonance in helicoptersusing magnetorheological dampers. Journalof the American Helicopter Society, 2004, 49(4): 468―482
|
|
Yang G Q, Spencer B F, Jung H J, Carlson J D. Dynamic modeling of large-scale magnetorheological dampersystemsfor civil engineering applications. Journalof Engineering Mechanics, 2004, 130(9): 1107―1114
doi: 10.1061/(ASCE)0733-9399(2004)130:9(1107)
|
|
Lou W J, Ni Y Q, Ko J M. Modal damping and stepping-switch control of stay cableswith magnetorheological fluid dampers. Proc of SPIE, Reno, Nevada, 2001, 4330: 354―365
|
|
Fujino Y, Soong T T, Spencer B F. Structural control: basic concepts and applications. Proc ASCE Structures Congress XIV, Chicago, Illinois, 1996, 1277―1278
|
|
Widjaja J, Samali B, Li J. The use of displacement threshold for switching frequencystrategy for structural vibration mitigation. Journal of Mechanical Science and Technology, 2007, 21: 865―869
doi: 10.1007/BF03027059
|
|
Carlson J D. MR fluids and devices in the real world. International Journal of Modern Physics B, 2005, 19(7, 8 & 9): 1463―1470
|
|
Carlson J D, Leroy D F, Holzheimer J C. US Patent, 9708853, 1998
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
