Affiliation:
1. Department of Structural Mechanics, University of Pavia, Italy
2. Structural Engineering Department, Cairo University, Egypt
Abstract
Minarets are spread across urban nuclei. Their structural weakness could result in failures with heavy consequences. However, the retrofit solutions are limited due to their simple cantilever scheme. The use of metallic pre-stressed wires/cables is a rather consolidated technique. The use of shape memory alloy (SMA) wires has been recently investigated. In view of such an application, a series of reduced-scale tests was planned and realized. This paper synthesizes the full report on an experimental work performed to study the effect of SMA wires on the dynamic behavior of a single degree of freedom model built in laboratory to represent a 1/16th of a minaret actually built in Cairo, Egypt. The model was tested under free vibration for different values of the axial force, before and after adding SMA wires. The results showed enhancements in the stiffness when the SMA wires were added and when the axial force increased, while a decrease in damping ratios was detected when increasing the applied axial force or after providing SMA wires.
Subject
Mechanical Engineering,Mechanics of Materials,Aerospace Engineering,Automotive Engineering,General Materials Science
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献