@inproceedings{78892c0d25b24b01b188393ba6738105,
title = "Elastomer isolator with an SMA actuator for vibration control",
abstract = "A semi-active device was developed to mitigate structural vibrations.The idea was to change the boundary condition of the device to adjust its stiffness.The selected construction was an axial spring made of elastomer material.When a cylindrical block of elastomer is compressed, it expands in the direction perpendicular to the load.Restricting the expansion, the axial stiffness in the loading direction becomes higher.The controllable stiffness region when the device is acting in stiff and soft modes was determined by numerical analysis.The stiffness ratio depends on the geometric shape of the spring and the ratio between the confined area in the stiff mode and the area where the material can expand freely in the soft mode.With a suitable design of the spring, the stiffness ratio can be over 10.A circular support ring made of shape memory alloy (SMA) was used as an actuator, which was attached to the outside of the cylindrical elastomer spring.The change of boundary condition was controlled by the gap between the elastomer spring and the constraint.The stiffness control was applied by controlling the temperature of SMA actuator.Experimental tests were carried out to verify the feasibility of the device.Dynamic loading tests indicated promising results.",
author = "Jaakko Heinonen and Tuomo K{\"a}rn{\"a} and Ismo Vessonen and Paul Klinge and Tomi Lindroos",
year = "2006",
language = "English",
isbn = "951-38-6311-5",
series = "VTT Symposium",
publisher = "VTT Technical Research Centre of Finland",
number = "244",
pages = "17--29",
booktitle = "Applied Material Research at VTT",
address = "Finland",
note = "Internal Symposium on Applied Materials ; Conference date: 08-06-2006 Through 08-06-2006",
}