RESPONSE VARIABILITY WITH RANDOM UNCERTAINTY IN A TUNED LIQUID COLUMN DAMPER

Autores

  • Mansour H. Alkmim University of Brasilia
  • Adriano T. Fabro
  • Marcus V. G. de Morais

DOI:

https://doi.org/10.26512/ripe.v2i16.21611

Palavras-chave:

Tuned Liquid Column Damper. Vibration Absorber. Model Uncertainty. Stochastic Analysis.

Resumo

Passive energy dissipation systems encompass a range of materials and devices for enhancing damping. They can be used both for natural hazard mitigation and for rehabilitation of aging or deficient structures. Among the current passive energy dissipation systems, tuned liquid column damper (TLCD), a class of passive control that utilizes liquid in a “U” shape reservoir to control structural vibration of the primary system, has been widely researched. Uncertainties can arise from simplifications in the model and from nonlinearities. To quantify uncertainties, random variables need to be associated with the systems parameters, such as stiffness and damping ratio, along with their probability density function. The Maximum Entropy Principle is used to construct the probability density function since it avoids using misinformation in the construction of model. In this paper the frequency response function of a system with a TLCD is investigated considering two cases of parameter uncertainty: the first considering uncertainties only in one parameter, the absorber damping ratio and the second considering uncertainties in two parameters, the absorber damping ratio and the structure stiffness. The results showed that, for the first case, the uncertainty is only predominant near the resonance and anti-resonance region and can indeed interfere in the optimum condition of the absorber. For the second case, the uncertainties are presented in all frequencies.

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Referências

Avila, Suzana M, M Barcelos, MVG Morais, Maura AM Shzu and Rita de C Silva. 2009. “Vibration control of the set tower and wind turbine under the wind influence.”.

Cataldo, Edson, Sergio Bellizzi and Rubens Sampaio. 2010. Taking into account uncertainties to analyze the robustness of an energy pumping system. In IX Argentinean Congress on Computational Mechanics y II South American Congress on Computational Mechanics (MECOM 2010). pp. CD”“ROM.

Chakraborty, Subrata and Bijan Kumar Roy. 2011. “Reliability based optimum design of tuned mass damper in seismic vibration control of structures with bounded uncertain parameters.” Probabilistic Engineering Mechanics 26(2):215”“221.

Kapur, Jagat Narain and Hiremaglur K Kesavan. 1992. Entropy optimization principles and their applications. Springer.

Marano, Giuseppe Carlo, Rita Greco and Sara Sgobba. 2010. “A comparison between different robust optimum design approaches: application to tuned mass dampers.” Probabilistic Engineering Mechanics 25(1):108”“118.

Murtagh, PJ, B Basu and BM Broderick. 2004. “Simple models for natural frequencies and mode shapes of towers supporting utilities.” Computers & structures 82(20):1745”“1750.

Newland, David Edward. 2012. An introduction to random vibrations, spectral & wavelet analysis. Courier Corporation.

Roberts, John Brian and Pol D Spanos. 2003. Random vibration and statistical linearization. Courier Corporation.

Sampaio, Rubens and Thiago Ritto. 2008. Dinmica de estruturas flexveis Anlise determinstica e estocstica. pp. 3”“5.

Soize, Christian. 2001. “Maximum entropy approach for modeling random uncertainties in transient elastodynamics.” The Journal of the Acoustical Society of America 109(5):1979”“ 1996.

Yalla, Swaroop K and Ahsan Kareem. 2000. “Optimum absorber parameters for tuned liquid column dampers.” Journal of Structural Engineering 126(8):906”“915.

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Publicado

2017-01-30

Como Citar

H. Alkmim, M., T. Fabro, A., & V. G. de Morais, M. (2017). RESPONSE VARIABILITY WITH RANDOM UNCERTAINTY IN A TUNED LIQUID COLUMN DAMPER. Revista Interdisciplinar De Pesquisa Em Engenharia, 2(16), 1–11. https://doi.org/10.26512/ripe.v2i16.21611

Edição

v. 2 n. 16 (2016): STOCHASTIC MODELING AND UNCERTAINTY QUANTIFICATION

Seção

Artigos

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