Approximate method for determination of dynamic characteristics of structures with viscoelastic dampers

• Autorzy: Lewandowski R.
• Konferencja: Symposium Vibrations In Physical Systems (27 ; 09-13.05.2016 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

An approximate method for determination of dynamic characteristics of structures with viscoelastic dampers is proposed in this paper. A fractional derivative is used to describe the dynamic behaviour of viscoelastic dampers. The method is based on a continuous dependency of the sensitivity of eigenvalue on a certain artificially introduced parameter which scaled up the influence of the damping term in the eigenvalue problem. Some results of a representative calculation are also presented and briefly discussed.

Słowa kluczowe

EN

structures; viscoelastic damper; generalized fractional model; dynamic characteristics

PL

struktury; tłumik lepkosprężysty; uogólniony model ułamkowy; charakterystyka dynamiczna

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2016
• Tom: Vol. 27
• Strony: 219--226
• Opis fizyczny: Bibliogr. 7 poz., 1 rys.

Twórcy

autor

Lewandowski R.

• Poznan University of Technology, 60-695 Poznan, ul. Piotrowo 5

Bibliografia

• 1. R. Lewandowski, Z. Pawlak, Dynamic analysis of frames with viscoelastic dampers modelled by rheological models with fractional derivatives, J. Sound and Vibration, 330 (2011) 923 – 936.
• 2. Z. Pawlak, R. Lewandowski, The continuation method for the eigenvalue problem of structures with viscoelastic dampers, Comp. Struct., 125 (2013) 53 – 61.
• 3. S. Adhikari, Modal analysis of linear asymmetric non-conservative systems, J. Eng. Mech., 125 (1999) 1372 – 1379.
• 4. M. Lazaro, Eigensolutions of non-proportionally damped systems based on continuous damping sensitivity, J. Sound and Vibr., 363 (2016) 532 – 544.
• 5. M. Lazaro, Dynamic analysis of frame structures with viscoelastic layers: New closed-form solutions of eigenvalues and a viscous approach, Eng. Struct., 54 (2013) 69 – 81.
• 6. R. Lewandowski, Reduction of vibration of building structures, PWN, Warszawa 2014 (in Polish).
• 7. R. Lewandowski, M. Łasecka-Plura, Design sensitivity analysis of structures with viscoelastic dampers, Comp. Struct., 164 (2016) 95 – 107.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.