Analytical estimation on damping behaviors of the Self-Damping fiber reinforced polymer (FRP) cable. (June 2020)

• Record Type: Journal Article
• Authors: Yang, Yaqiang; Fahmy, Mohamed F.M.; Pan, Zhihong; Guan, Sujun; Zhan, Yang
• Is Part Of: Structures. Volume 25(2020)
• Page Start: 774
• Page End: 784
• Publication Date: 2020-06
• Subjects: Cable-stayed bridge -- FRP cable -- Modal damping ratio -- Viscoelastic material -- Model dynamic test; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2020.03.062
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: This paper analytically estimates the damping behaviors of a new type of self-damping fiber reinforce polymer (FRP) cables. Based on the vibration results of scale-model dynamic tests, the modal damping ratios of non-self-damping FRP cable were firstly analyzed using the modified formula of the self-damping FRP cables and the combined Rayleigh and frequency independent damping (CRFID) model. According to the energy dissipation mechanism and structural characteristics of the self-damping FRP cable, analysis modal damping models are proposed. Compared with the test results, the availability of the analysis models is verified. The results indicated that: the damping coefficient of the dynamic strain of a non-self-damping FRP cable is larger than that of a steel cable and a basalt FRP (BFRP) cable, and smaller than that of the carbon FRP (CFRP) cable; the proposed model can effectively evaluate the damping ratios of the in-plane vibration of a self-damping FRP cable under different amplitudes; and the damping ratios of the out-of-plane vibration of self-damping and non-self-damping FRP cables can be well predicted using the CRFID model.