Describing Functions For Effective Stiffness and Effective Damping of Hystersis Structures

Authors

DOI:

https://doi.org/10.56748/ejse.441

Keywords:

Describing function, Hysteresis structures, Energy dissipation devices, Equivalent period ratio, Equivalent damping ratio

Abstract

For a hysteresis structure with energy dissipation devices, the force-displacement relation is nonlinear such that it is very difficult to evaluate the actual damping and stiffness coefficients, even if the forcedisplacement characteristic is simply perfect elasto-plastic. With the describing function method, we can linearize the nonlinear behavior of the energy dissipation devices and then obtain the  equivalent damping and stiffness coefficients; In turn, the effective period and equivalent damping ratio can be attained. It is stressed that with this approach, the imaginary part of the describing function is just the energy dissipation term, which corresponds to the conventional hystersis damping derived by the energy method. Simulation results confirm the effectiveness of this proposed method.

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Published

2004-01-01

How to Cite

Steven Chingyei Chung, Jen-So Huang and Wenshen Pong (2004) “Describing Functions For Effective Stiffness and Effective Damping of Hystersis Structures”, Electronic Journal of Structural Engineering, 4, pp. 55–65. doi: 10.56748/ejse.441.

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Section

Articles