Development of Magnetorheological Resistive Exercise Device for Rowing Machine.
Training equipment used by professional sportsmen has a great impact on their sport performance. Most universal exercisers may help only to improve the general physical condition due to the specific kinematics and peculiar resistance generated by their loading units. Training of effective techniques and learning of psychomotor skills are possible only when exercisers conform to the movements and resistance typical for particular sports kinematically and dynamically. Methodology of developing a magnetorheological resistive exercise device for generating the desired law of passive resistance force and its application in a lever-type rowing machine are described in the paper. The structural parameters of a controllable hydraulic cylinder type device were found by means of the computational fluid dynamics simulation performed by ANSYS CFX software. Parameters describing the magnetorheological fluid as non-Newtonian were determined by combining numerical and experimental research of the resistance force generated by the original magnetorheological damper. A structural scheme of the device control system was developed and the variation of the strength of magnetic field that affects the magnetorheological fluid circulating in the device was determined, ensuring a variation of the resistance force on the oar handle adequate for the resistance that occurs during a real boat rowing stroke.
Mechanical Engineering Department, Mechanical Engineering and Design Faculty, Kaunas University of Technology, Studentu 56-302, LT-54214 Kaunas, Lithuania.
Vytautas
0000-0002-1640-7628
V
Grigas
Mechanical Engineering Department, Mechanical Engineering and Design Faculty, Kaunas University of Technology, Studentu 56-302, LT-54214 Kaunas, Lithuania.
Anatolijus
0000-0002-3811-7349
A
Šulginas
Mechanical Engineering Department, Mechanical Engineering and Design Faculty, Kaunas University of Technology, Studentu 56-302, LT-54214 Kaunas, Lithuania.
Pranas
P
Žiliukas
D001696:Biomechanical Phenomena; D019295:Computational Biology; D004867:Equipment Design; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D060328:Magnetic Phenomena; D055070:Resistance Training / Q000295:instrumentation* / Q000706:statistics & numerical data; D012212:Rheology; D013177:Sports