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Experimental testing and numerical modelling of honeycomb structural fuse

University of British Columbia

This thesis presents a novel metallic damper, called Honeycomb Structural Fuse (HSF), for seismic applications. HSF utilizes commonly available welded wide flange sections with honeycomb-shape perforations on web. It is designed to dissipate earthquake energy through plastic deformation of the web in shear, while the flanges remain elastic. The HSF can be fabricated into different shapes to fit different structural demands. To investigate the seismic behavior of the HSF, a total of 12 specimens with different honeycomb cell wall aspect ratios (wall thickness to central length) and honeycomb cell combinations (rows and columns) were manufactured and tested under displacement-based static cyclic loads. The influence of the different geometry parameters on the initial stiffness, yield force, yield drift, force-drift relationship, buckling, and failure modes are summarized in this thesis. Finally, a robust finite element model was built to simulate the hysteretic behavior of the HSF. The effectiveness of the proposed model was validated using experimental results. The study shows that the newly proposed HSF has stable energy dissipation, which can be used as an efficient metallic damper for seismic applications.

Text

2018-10-26

Attribution-NonCommercial-NoDerivatives 4.0 International

http://hdl.handle.net/2429/67713

Civil Engineering

University of British Columbia

UBCV

http://creativecommons.org/licenses/by-nc-nd/4.0/