www.canadacollege.edu

www.canadacollege.edu

Magneto-Rheological Damper In Structures for Seismic Mitigation Adam Davies, Chris Amaro, Jesus Caballero, Priscila Silva, Juvi Marin Dr. Cheng Chen Jun Jian Liang 1

Overview Background/ Motivation Brief overview of MR Dampers / Computational Models Data Analysis Metropolis-Hastings Algorithm Summary 2

Background San Francisco, California Carrizo Plain, California 3 4

Smart Material Changes its viscosity when subjected to a magnetic field Sidpara, Ajay. Magnetorheological Finishing: a Perfect Solution to Nanofinishing Requirements.

5 Magneto-Rheological (MR) Damper Truong, D. Q., and K. K. Ahn. MR Fluid Damper and Its Application to Force Sensorless Damping Control System. 6

Computational Damper Models Hyperbolic Tangent Model Bouc-Wen Model Viscous-Dahl Model Maxwell Non-Linear Slider Model

Jiang, Zhaoshuo, et al. Application of MR Damper in Real-Time Structural Damage Detection Using Extended Kalman Filter. ResearchGate 7 Hyperbolic Tangent Model vs Viscous-Dahl Model Hyperbolic Tangent Model Force equation:

Viscous-Dahl Model Force equation: Jiang, Zhaoshuo, et al. Application of MR Damper in Real-Time Structural Damage Detection Using Extended Kalman Filter. ResearchGate Liang, Jun Jian. "Comparison of Models for Large-Scale Magneto-Rheological Damper to Account for Uncertainty in Seismic Hazard Mitigation." 8

Hyperbolic Tangent Model vs Viscous-Dahl Hyperbolic Tangent Model Parameters Model Viscous-Dahl Model Parameters Liang, Jun Jian. "Comparison of Models for Large-Scale Magneto-Rheological Damper to Account for Uncertainty in

Seismic Hazard Mitigation." 9 Software Used MATLAB Simulink UQ Lab (Uncertainty

Quantification) 10 Simulink Simulation Engine Easy to create damper models from differential equations Easy access to

simulations in our research 11 Viscous-Dahl Model in Simulink 12

Bouc-Wen Damper Behavior Force increases with increasing current

Area in closed curve shows dissipated energy 13 Bouc-Wen

Force increases with velocity and reaches point of saturation I 14 Graphic User Interface (GUI)

Interact using graphical components Alternative to text based commands Efficient and easy to use

15 GUI interface 16 UQ Lab Uncertainty Quantification

MatLab Based Sensitivity Analysis Tool Uncertainty Quantification. Uncertainty Quantification | SmartUQ, www.smartuq.com/resources/uncertainty-quantification/. 17

Data Analysis Parameters correspond to respective model equations Variable with the highest value = most sensitive Each bar corresponds to variable sensitivity Charts to be modified are evenly distributed

18 Data: VD, NPA Identified Parameters for Viscous Plus Dahl Model Identified Parameters for Non-Parametric Algebraic

Model 19 Bouc-Wen Data Identified Parameters for Bouc-Wen Model 20

Hyperbolic Tangent Data Identified Parameters for Hyperbolic Tangent Model 21 Metropolis-Hastings Algorithm 22

Non-Parametric Algebraic MHA Results 23 Viscous-Dahl MHA Results 24 Conclusion

Probabilistic more precise than deterministics for our trials Recommendation of analyzing parameters of other computational models Future work including Single-degree of Freedom 25 Summary Magneto-Rheological dampers

Computational Models Analysis of Data Gathered Conclusions Future Work 26 27 References

1. Jiang, Z., and R. Christenson. "A Comparison of 200 KN Magneto-rheological Damper Models for Use in Real-time Hybrid Simulation Pretesting." Smart Materials and Structures 20.6 (2011): 065011. Web. 2. Chae, Yunbyeong, James M. Ricles, and Richard Sause. "Modeling of a Large-scale Magneto-rheological Damper for Seismic Hazard Mitigation. Part I: Passive Mode." Earthquake Engineering & Structural Dynamics 42.5 (2012): 669-85. Web.

3. Caicedo, Juan M., Zhaoshuo Jiang, and Sarah C. Baxter. "Including Uncertainty in Modeling the Dynamic Response of a Large-Scale 200 KN MagnetoRheological Damper." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering 3.2 (2017): n. pag. Web. 4. D.Q. Troung and AhnK.K. MR Fluid Damper and Its Application to Force Sensorless Damping Control System. Intech (2012): DOI: 10.5772/51391. Web 5. Liang, Jun Jian. "Comparison of Models for Large-Scale Magneto-Rheological Damper to Account for Uncertainty in Seismic Hazard Mitigation." Comparison of Models for Large-Scale Magneto-Rheological Damper to Account for Uncertainty in Seismic Hazard Mitigation (2018): 1-14. Web. 6. USGS: California Has 99.7 Percent Chance of Big Earthquake in Next 30 Years. Fox News, FOX News Network, 15 Apr. 2008,

www.foxnews.com/story/2008/04/15/usgs-california-has-7-percent-chance-big-earthquake-in-next-30-years.html. 7. Truong, D. Q., and K. K. Ahn. MR Fluid Damper and Its Application to Force Sensorless Damping Control System. MR Fluid Damper and Its Application to Force Sensorless Damping Control System | InTechOpen, InTech, 17 Oct. 2012, www.intechopen.com/books/smart-actuation-and-sensing-systems-recent-advances-and-future-challenges/mr-fluid-damper-and-its-application-to-force-sensorlessdamping-control-system . 8. Sidpara, Ajay. Magnetorheological Finishing: a Perfect Solution to Nanofinishing Requirements. Optical Engineering, International Society for Optics and Photonics, 1 Sept. 2014, opticalengineering.spiedigitallibrary.org/article.aspx?articleid=1857354. 9. Jiang, Zhaoshuo, et al. Application of MR Damper in Real-Time Structural Damage Detection Using Extended Kalman Filter. ResearchGate, 10 Aug. 2015, 10. www.researchgate.net/figure/281792403_fig2_Figure-31-Schematic-of-the-MR-damper-hyperbolic-tangent-model.

Uncertainty Quantification. Uncertainty Quantification | SmartUQ, www.smartuq.com/resources/uncertainty-quantification/. 28 Questions ? 29

Recently Viewed Presentations

  • Ecological Biogeography examines the factors (principally physical) that

    Ecological Biogeography examines the factors (principally physical) that

    Source (and graphic): New Scientist, August 12, 2006 Temperature ranges of some common "cold-blooded" organisms (poikilotherms) Thermally limited growth/activity season (e.g. Fairbanks, Alaska) Surviving extreme temperatures [migration, hibernation, dormancy (eggs, seeds, pupae, etc.)] Temperature and habitat occupation Water temperatures ...
  • Zonta International District 17 Conference Memorial Service (Monday)

    Zonta International District 17 Conference Memorial Service (Monday)

    Area 4 ZC of llocos Norte- Past President Dr Purisima A. Bueno on 21 June 2018; ZC of Tuguegarao - Balbina Flojo Fermin on 12 June 2018 Area 5 ZC Makati Ayala - Wilhelmina Tanchion 8 June 2019; ZC Muntinlupa...
  • 2016-2017 Kindergarten Parents! - Logan County Schools

    2016-2017 Kindergarten Parents! - Logan County Schools

    It is CRITICAL that you inform us of any transportation changes. Notes are the best way to do this! (signed and dated) We will not be able to accept transportation changes through email or other technology programs.
  • Introduktion

    Introduktion

    Det er mamma som eier sengen. Sengen er det som . eies. Gi flere eksempler på denne type setninger . i barnets tidlige gramatikk. Setninger der stedet er det sentrale
  • Coleridge - mlkmuggio.gov.it

    Coleridge - mlkmuggio.gov.it

    Many details contribute to this impression: his "glittering eye", the fact that the "Mariner hath his will". These are typical attributes of a supernatural creature. How does the Wedding-Guest react to the Mariner? The Wedding-guest cannot but stay still and...
  • Teaching History of Pharmacy According to the AIHP

    Teaching History of Pharmacy According to the AIHP

    Picture: Pharmacist at People's Drug Store No. 5, Washington, DC, c. 1920. Library of Congress Prints and Photographs, LC-USZ62-129891. Developed by the Teaching History of Pharmacy Committee of the History of Pharmacy SIG, 2017-18. ... ACPE accreditation standards are revised...
  • Violence: A Public Health Perspective - Change Gun Violence

    Violence: A Public Health Perspective - Change Gun Violence

    Violence Defined. World report on violence and health (WRVH): "the intentional use of physical force or power, threatened or actual, against oneself, another person, or against a group or community, that either results in or has a high likelihood of...
  • AF Leadership Institute

    AF Leadership Institute

    How do you define "ethics"? Morality and ethics are really synonyms. Sometimes people use "ethics" to refer to the rules and principles that guide our conduct as it affects others. "Morality" is then used to refer to rules and principles...