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Tuesday, July 9 • 15:50 - 16:10
RESEARCH ON PROPERTIES OF POLYURETHANE ISOLATOR

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A large number of BE-type rubber isolators are used on the ship, and the vibration isolation effect is found to be poor in use, which seriously affects the comfort of the crew and passengers. This case is analyzed for the poor vibration isolation effect of the current BE-type isolator, mainly because: (1) The ratio of dynamic stiffness and static stiffness for the isolator is high, the natural frequency is large, and the vibration isolation effect is poor; (2) Under the rated load the creep of the isolator is large, causing the isolator to contact bottom and the material to rupture, then the vibration isolation effect is lost. In this paper, a BE-type low creep isolator was designed with polyurethane. The static performance, dynamic performance, creep and vibration isolation effects were tested. The results show that the ratio of dynamic stiffness and static stiffness for polyurethane isolator is lower than that for rubber isolator, the creep is smaller, and the vibration isolation effect is better. The above analysis shows that the vibration isolation effect of the isolator can be improved by reducing the ratio of dynamic stiffness and static stiffness and reducing the creep.

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avatar for Mohammad Rafiee

Mohammad Rafiee

Postdoctoral Fellow, Polytechnique Montréal
Mohammad Rafiee received his Ph.D. degree in Mechanical Engineering from the University of Ottawa in 2018. Currently, he is a Postdoctoral Fellow at Polytechnique Montreal in Canada. His research interests are primarily focused on the development of advanced composite materials, smart... Read More →

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Tuesday July 9, 2019 15:50 - 16:10 EDT
Outremont 6
  T08 Mat. for noise & vibr. cntrl., SS02 Vibr damping materials

Attendees (7)