A RoBall with an elastic restoring force
DOI:
https://doi.org/10.5459/bnzsee.39.1.85-88Abstract
We present recent research on the development of the seismic isolator, the RoBall, a rubber container holding a number of metal balls. This version of the RoBall, which in addition to friction includes an elastic restoring force and contains 7 metal balls, took a maximum vertical load of -0.5 MPa and had a force-displacement wavelength of - 450 mm.
References
Robinson, W H. (2005) "Progress of Application and Research & Development for Seismic Isolation and Passive Energy Dissipation for Civil and Industrial Structures in New Zealand", 9th World Seminar on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, Kobe, Japan, June 13-16.
Skinner, R.I., Robinson, W.H. and McVerry, G.H. (1993). An Introduction to Seismic Isolation. (Updated and modified in both Chinese and Japanese, 1998). John Wiley and Sons Ltd, West Sussex, England.
Kelly, J.M., Naeim Farzad, (1999). Design of Seismic Isolated Structures - From Theory to Practice. John Wiley and Sons Inc., New York, USA.
Robinson, W.H., Cannon, C.R. and Meyer, J.E. (2005). "RoGiider - a Slider with an Elastic Restoring Force". Bulletin of the New Zealand Society for Earthquake Engineering, Vol. 39, No. 1, March.
Robinson, W.H. (2002) "The RoBall - A New Seismic Isolation Device". Bulletin of the New Zealand Society for Earthquake Engineering, Vol. 35, No. 3, p204, September. DOI: https://doi.org/10.5459/bnzsee.35.3.204-207
Robinson, W.H. (1998), Friction Ball, PCT/NZ98/00117.
