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Structural Engineering and Mechanics Volume 46, Number 3, May10 2013 , pages 387-402 DOI: https://doi.org/10.12989/sem.2013.46.3.387 |
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Fatigue experiments on steel cold-formed panels under a dynamic load protocol |
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Antonio J. Garcia-Palencia and Luis A. Godoy
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| Abstract | ||
| A dynamic load protocol has been used to experimentally simulate fatigue behavior in coldformed metal panels with screwed connections under wind loading. The specific protocol adopted is an adaptation of SIDGERS, originally developed for non-metallic membranes, which is composed of levels each under increasing load values. A total of 19 tests were performed on 3.35 m long by 0.91 m wide panels, identified as Type B-wide rib and Type E, both with screw connections at the edge and at the center, thus conforming two-span specimens. In some configurations the panels were fixed at the valleys, whereas crestfixed connections were also investigated. Reinforcing the connections by means of washers was also investigated to evaluate their efficiency in improving fatigue capacity. The experimental results show maximum load capacities in improved connections with washers of approximately twice of those with classical connections. | ||
| Key Words | ||
| old-formed plates; connections; dynamic load protocol; fatigue failure; roof systems; SIDGERS; steel; testing | ||
| Address | ||
| Antonio J. Garcia-Palencia : Department of Civil Engineering, University of New Hampshire, Durham, NH 03824, USA Luis A. Godoy : Structures Department, FCEFyN, National University of Cordoba, and CONICET, P.O. Box 916, Cordoba 5000, Argentina | ||