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A platform for research: civil engineering, architecture and urbanism
Seismic optimization of variable friction pendulum tuned mass damper with hysteretic damping characteristic
https://orcid.org/0000-0001-9442-0230
https://orcid.org/0000-0002-0732-8231
Abstract A variable friction pendulum-tuned mass damper (VFP-TMD) with hysteretic damping characteristics was proposed. The mechanism of the proposed VFP-TMD demonstrated linear behavior and nonlinear properties. Further, the fully nonlinear (FN) and partial linear (PL) equations of motion of the structure with the VFP-TMD system were derived. The VFP-TMD demonstrated stable and excellent seismic mitigation capacities and stroke limitation functionality. Based on the fixed-point theory, the closed-form exact solutions to design parameters of an undamped structure with a VFP-TMD system subjected to the ground motion were presented for different performance indices. The parametric studies showed that optimal designed VFP-TMD can be perfectly tuned in the frequency domain, which proved the applicability of closed-form solutions. To better understand VFP-TMD with hysteretic damping, constant friction pattern and multi-stage variable friction pattern were proposed for comparison. In contrast with constant friction and multi-stage variable friction, VFP-TMD with hysteretic damping characteristic was significantly optimized by the closed-form solutions. To verify the effectiveness of the closed-form solutions on VFP-TMD, twenty sets of real earthquake records were conducted which exhibited the superiority of linear variable friction patterns on seismic mitigation simultaneously. Results showed that the optimized VFP-TMD had an “infinitely large bandwidth”, which enabled it to reach its full potential according to the excitation amplitude.
Highlights A variable friction pendulum tuned mass damper (VFP-TMD) was proposed. VFP-TMD exhibits stable, excellent and stroke limitation performance. Closed-form solutions of VFP-TMD were presented for different performance indices. VFP-TMD revealed an “infinitely large bandwidth” along with excitation amplitude. Performance of VFP-TMD was optimized by the closed-form solutions.
Seismic optimization of variable friction pendulum tuned mass damper with hysteretic damping characteristic
https://orcid.org/0000-0001-9442-0230
https://orcid.org/0000-0002-0732-8231
Abstract A variable friction pendulum-tuned mass damper (VFP-TMD) with hysteretic damping characteristics was proposed. The mechanism of the proposed VFP-TMD demonstrated linear behavior and nonlinear properties. Further, the fully nonlinear (FN) and partial linear (PL) equations of motion of the structure with the VFP-TMD system were derived. The VFP-TMD demonstrated stable and excellent seismic mitigation capacities and stroke limitation functionality. Based on the fixed-point theory, the closed-form exact solutions to design parameters of an undamped structure with a VFP-TMD system subjected to the ground motion were presented for different performance indices. The parametric studies showed that optimal designed VFP-TMD can be perfectly tuned in the frequency domain, which proved the applicability of closed-form solutions. To better understand VFP-TMD with hysteretic damping, constant friction pattern and multi-stage variable friction pattern were proposed for comparison. In contrast with constant friction and multi-stage variable friction, VFP-TMD with hysteretic damping characteristic was significantly optimized by the closed-form solutions. To verify the effectiveness of the closed-form solutions on VFP-TMD, twenty sets of real earthquake records were conducted which exhibited the superiority of linear variable friction patterns on seismic mitigation simultaneously. Results showed that the optimized VFP-TMD had an “infinitely large bandwidth”, which enabled it to reach its full potential according to the excitation amplitude.
Highlights A variable friction pendulum tuned mass damper (VFP-TMD) was proposed. VFP-TMD exhibits stable, excellent and stroke limitation performance. Closed-form solutions of VFP-TMD were presented for different performance indices. VFP-TMD revealed an “infinitely large bandwidth” along with excitation amplitude. Performance of VFP-TMD was optimized by the closed-form solutions.
Seismic optimization of variable friction pendulum tuned mass damper with hysteretic damping characteristic
https://orcid.org/0000-0001-9442-0230
https://orcid.org/0000-0002-0732-8231
Abstract A variable friction pendulum-tuned mass damper (VFP-TMD) with hysteretic damping characteristics was proposed. The mechanism of the proposed VFP-TMD demonstrated linear behavior and nonlinear properties. Further, the fully nonlinear (FN) and partial linear (PL) equations of motion of the structure with the VFP-TMD system were derived. The VFP-TMD demonstrated stable and excellent seismic mitigation capacities and stroke limitation functionality. Based on the fixed-point theory, the closed-form exact solutions to design parameters of an undamped structure with a VFP-TMD system subjected to the ground motion were presented for different performance indices. The parametric studies showed that optimal designed VFP-TMD can be perfectly tuned in the frequency domain, which proved the applicability of closed-form solutions. To better understand VFP-TMD with hysteretic damping, constant friction pattern and multi-stage variable friction pattern were proposed for comparison. In contrast with constant friction and multi-stage variable friction, VFP-TMD with hysteretic damping characteristic was significantly optimized by the closed-form solutions. To verify the effectiveness of the closed-form solutions on VFP-TMD, twenty sets of real earthquake records were conducted which exhibited the superiority of linear variable friction patterns on seismic mitigation simultaneously. Results showed that the optimized VFP-TMD had an “infinitely large bandwidth”, which enabled it to reach its full potential according to the excitation amplitude.
Highlights A variable friction pendulum tuned mass damper (VFP-TMD) was proposed. VFP-TMD exhibits stable, excellent and stroke limitation performance. Closed-form solutions of VFP-TMD were presented for different performance indices. VFP-TMD revealed an “infinitely large bandwidth” along with excitation amplitude. Performance of VFP-TMD was optimized by the closed-form solutions.
Seismic optimization of variable friction pendulum tuned mass damper with hysteretic damping characteristic
Xiang, Yue (author) / Tan, Ping (author) / He, Hui (author) / Shang, Jiying (author) / Zhang, Yafei (author)
2022-06-01
Article (Journal)
Electronic Resource
English
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