Design and Construction of a Quasi-Zero-Stiffness Vibration Isolator of a Small Size
Reference: VIBISOL1 (Acronym)
Student: Sarp Gönülkırmaz
(From Carrella, A., Brennan, M. J. ve Waters, T. P. 2007. “Optimization of a Quasi-Zero-Stiffness Isolator”, Journal of Mechanical Science and Technology, 21, 946-949.)
There are various approaches to isolate a system/instrument/building from vibration. Such systems are available for isolating buildings from earthquake effects, electronic instruments from the body of aircraft/spacecraft, cameras from the body of moving journalists / cameramen, etc. Some of these isolators are for large bodies and do not have significant size restrictions that may hinder their functioning. The project involves feasibility investigation, design and construction of a quasi-zero-stiffness (QZS) isolator that has to fit in a tight volume. Referring to the above figure, which shows a schematic of a QZS isolator, when a time-varying force f is applied to the top node, a small portion of it should be transmitted to the bottom support and vice versa. The task is to find optimum parameter values so that minimum force transmission is achieved.
- Literature survey.
- Understanding the standart that will be used in the design.
- Derivation of the equation of motion of QZS isolator with a mass on top of it.
- Solution of the equation of motion and optimization of the stiffness parameters.
- Construction of a QZS isolator and experimentation.,
Required Qualifications and Skills:
- To be enrolled in or to have taken ME 445.
- Interest in theoretical and experimental work.