Material damping evaluation of frames made of different materials. (May 2014)

• Record Type: Journal Article
• Authors: Wang, Y.; Pan, Y.; Wen, J.; Su, L.
• Is Part Of: Materials research innovations. Volume 18(2014)Supplement 3
• Page Start: S53
• Page End: S58
• Publication Date: 2014-05
• Subjects: Reinforced concrete columns -- Fibre reinforced polymers -- Energy dissipation -- Damping -- Finite element method -- Dynamic response; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891714Z.000000000599
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : On the basis of the relationship of material damping and stress amplitude proposed by Lazan, the formulae of energy dissipation in per unit volume of concrete filled steel tube and reinforced concrete subjected to normal stress are presented. In the process of finite element analysis, the proposed formulae are applied by an iterative algorithm to calculate the material damping of the frame structures made of different materials, i.e. concrete filled steel tube column steel beam frame, reinforced concrete column steel beam frame and steel frame, respectively. In addition, a comparison of the material damping values of the three different frames is conducted, showing that even in the elastic state, the material damping values of the three different structures are not always constant and they increase in a nonlinear way with the increase of the stress amplitude; the performance of the energy dissipation of the concrete filled steel tube and reinforced concrete are better than that of steel, and the performance of the energy dissipation of the concrete filled steel tube is the best of the three.