Title: Degrading Bouc-Wen models compatible with plasticity postulates
Authors: Kottari A, Charalampakis AE, Koumousis VK
Type: Conference paper
Conference: 9th HSTAM International Congress on Mechanics
Venue: Limassol, Cyprus
Date: 2010
Language: English

[abstract]

The Sivaselvan-Reinhorn model which is based on Bouc-Wen phenomenological model of hysteresis is explored from an engineering and mathematical perspective. Remarks and modifications of the original model are provided, concerning the hysteretic behavior of systems exhibiting stiffness degradation, strength deterioration and pinching. In addition, analytical solutions for the hysteretic response of the Sivaselvan- Reinhorn model are derived using Gauss’ hypergeometric function on the moment – curvature relations. Sivaselvan-Reinhorn model exhibits displacement drift, force relaxation and nonclosure of hysteretic loops when subjected to small amplitude reversals. This nonphysical behavior is eliminated with the introduction of a stiffening parameter in the hysteretic differential equations. Numerical results are provided that demonstrate the significance of the proposed modifications, particularly for seismic excitations.

[cite as]

Kottari A, Charalampakis AE, Koumousis VK. Degrading Bouc-Wen models compatible with plasticity postulates. Proc 9th HSTAM International Congress on Mechanics, Limassol, Cyprus; 2010.

[ paper]