TY - GEN
T1 - Passive implementation of rate-independent linear damping using a negative stiffness element
AU - Luo, H.
AU - Chong, C.
AU - Ikago, K.
AU - Keivan, A.
AU - Phillips, B. M.
N1 - Funding Information:
This material is based upon the work supported by the Japan Society for the Promotion of Science (JSPS) under a Grant-in-Aid for Scientific Research (B) No. 15H04070.
Publisher Copyright:
© NCEE 2018.
PY - 2018
Y1 - 2018
N2 - It is well known that rate-independent linear damping (RILD) benefits a low-frequency structure by yielding a lower restoring force, thereby lowering the acceleration response compared to other damping types with a similar displacement reduction. Its non-causality, however, poses major difficulties in time-domain analysis and in implementing it as a physical device. In this study, a passive device, in which Maxwell and negative stiffness elements are arranged in parallel, is proposed to simulate the behavior of RILD. Both frequency- and time-domain analyses are conducted to investigate the performance of a low-frequency structure incorporated with the proposed model. Moreover, to achieve simultaneous reductions in floor response acceleration and displacement, the feasibility of the proposed model to mimic RILD is also verified.
AB - It is well known that rate-independent linear damping (RILD) benefits a low-frequency structure by yielding a lower restoring force, thereby lowering the acceleration response compared to other damping types with a similar displacement reduction. Its non-causality, however, poses major difficulties in time-domain analysis and in implementing it as a physical device. In this study, a passive device, in which Maxwell and negative stiffness elements are arranged in parallel, is proposed to simulate the behavior of RILD. Both frequency- and time-domain analyses are conducted to investigate the performance of a low-frequency structure incorporated with the proposed model. Moreover, to achieve simultaneous reductions in floor response acceleration and displacement, the feasibility of the proposed model to mimic RILD is also verified.
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M3 - Conference contribution
AN - SCOPUS:85085566799
T3 - 11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy
SP - 5168
EP - 5178
BT - 11th National Conference on Earthquake Engineering 2018, NCEE 2018
PB - Earthquake Engineering Research Institute
T2 - 11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018
Y2 - 25 June 2018 through 29 June 2018
ER -