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212 Ketter Hall, North Campus, Buffalo, NY 14260 civil.buffalo

212 Ketter Hall, North Campus, Buffalo, NY 14260 www.civil.buffalo.edu Fax: 716 645 3733 Tel: 716 645 2114 x 2400 Control of Structural Vibrations Lecture #5 Devices and Models (1) Instructor: Andrei M. Reinhorn P.Eng. D.Sc. Professor of Structural Engineering.

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212 Ketter Hall, North Campus, Buffalo, NY 14260 civil.buffalo

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  1. 212 Ketter Hall, North Campus, Buffalo, NY 14260 www.civil.buffalo.edu Fax: 716 645 3733 Tel: 716 645 2114 x 2400 Control of Structural Vibrations Lecture #5 Devices and Models (1) Instructor: Andrei M. Reinhorn P.Eng. D.Sc. Professor of Structural Engineering

  2. Control Devices in Civil Engineering Structures

  3. Classification of PED

  4. Modeling of Experimental Data

  5. Viscous and Viscoelastic Devices - Behaviour Viscous: F = C (dx/dt)

  6. Viscous Fluid Dampers • Models and implemented Devices

  7. Viscous Fluid Damper

  8. Viscous Fluid Damper

  9. Viscous Fluid Damper

  10. Fluid Damper - Taylor Devices

  11. Structure with Fluid Dampers

  12. Brace with Fluid Damper

  13. Response of Fluid Damper in Frame

  14. Fluid Dampers Models with Stiffening

  15. Fluid Dampers Models with Stiffening  or

  16. Maxwell Model dependency on frequency

  17. Model of fluid damper

  18. Other Fluid Dampers Models

  19. Fluid Dampers Models Solution of fluid dampers modeled as fractional derivatives is done in the frequency domain since derivatives are product of the function by the argument at the power of order of derivative (approximately) Makris, 1990

  20. Typical response of fluid damper

  21. Solid Viscoelastic Dampers • Models and Implemented Devices

  22. Viscoelastic Dampers

  23. Viscoelastic Damper - 3M Corp.

  24. Viscoelastic Solid Dampers

  25. Viscoelastic Models

  26. Viscoelastic Models

  27. General Viscoelastic Model

  28. Extended Viscoelastic Model

  29. Viscoelastic Models

  30. Shear Storage Modulus

  31. Shear Loss Modulus

  32. Effectivness vs TemperatureViscoelastic Dampers

  33. Effectiveness in SystemViscoelastic Dampers

  34. Energy Balance

  35. Energy Balance

  36. Additional Viscoelastic Dampers

  37. Additional Viscoelastic Dampers

  38. Design ChartFor Visco-Elastic Dampers

  39. Viscous Fluid Wall Dampers

  40. Sumitomo Construction Fluid Viscoelastic Wall

  41. Viscous Walls -Sumitomo Industries Ltd

  42. Independence of Position

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