scholarly journals A Base Isolation Device Using Shape Memory Alloy Wires

2005 ◽  
Vol 71 (703) ◽  
pp. 768-775
Author(s):  
Yoshitaka YAMASHITA ◽  
Arata MASUDA ◽  
Akira SONE
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Base Isolation ◽  
Isolation Device

230 A Base Isolation Device Using Shape Memory Alloy Wires

2003 ◽  
Vol 2003 (0) ◽  
pp. _230-1_-_230-6_
Author(s):  
Yoshitaka YAMASHITA ◽  
Arata Masuda ◽  
Akira Sone
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Base Isolation ◽  
Isolation Device

An Experimental Study of Base Isolation Devices Using Shape Memory Alloy Wires

2004 ◽  
Author(s):  
Yoshitaka Yamashita ◽  
Arata Masuda ◽  
Akira Sone
Keyword(s):  
Experimental Study ◽  
Cyclic Loading ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Seismic Isolation ◽  
Base Isolation ◽  
Restoring Forces ◽  
Loading Tests ◽  
Isolation Device ◽  
Cyclic Loading Tests

In this study, we develop a base isolation device using SMA wires. Two types of SMA springs are used as softening springs, i.e. ring-type-spring (RTS) and buckling-type-spring (BTS). BTSs’ restoring forces have significant softening characteristics, which suppresses the acceleration transmissibility. Cyclic loading tests are conducted to investigate the durability of the SMA springs. The results show that they have the enough durability for seismic isolation.

136 A Base Isolation Device Using Shape Memory Alloy Wires

2004 ◽  
Vol 2004 (0) ◽  
pp. _136-1_-_136-6_
Author(s):  
Yoshitaka Yamashita ◽  
Arata MASUDA ◽  
Akira SONE
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Base Isolation ◽  
Isolation Device

Design of Shape Memory Alloy Damper for Base Isolated Structure

1997 ◽  
Author(s):  
Krzysztof Wilde ◽  
Paolo Gardoni ◽  
Yozo Fujino ◽  
Stefano Besseghini
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Base Isolation ◽  
Hysteretic Behavior ◽  
Isolation System ◽  
Rubber Bearing ◽  
Laminated Rubber Bearing ◽  
Base Isolation System ◽  
Rubber Bearings ◽  
Smart Base Isolation

Abstract Base isolation provides a very effective passive method of protecting the structure from the hazards of earthquakes. The proposed isolation system combines the laminated rubber bearing with the device made of shape memory alloy (SMA). The smart base isolation uses hysteretic behavior of SMA to increase the structural damping of the structure and utilizes the different responses of the SMA at different levels of strain to control the displacements of the base isolation system at various excitation levels. The performance of the smart base isolation is compared with the performance of isolation by laminated rubber bearings to assess the benefits of additional SMA damper for isolation of three story building.

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