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Quasi-static axial compression of concentric expanded metal tubes
Affiliation:1. Universidad Nacional Experimental Francisco de Miranda, Departamento de Mecánica y Tecnología de Producción, Falcón, Venezuela;2. Universidad Nacional de Colombia, Facultad de Minas, Departamento de Ingeniería Civil, Medellín, Colombia;3. Universidad Simón Bolívar, Departamento de Mecánica, Apdo. 89000, Caracas 1080-A, Venezuela;1. Composites Group, Departments of Civil Engineering and Materials Engineering, The University of British Columbia, Vancouver, B.C., Canada;2. Composite Vehicle Research Center, Department of Mechanical Engineering, Michigan State University, MI, USA;1. School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin 9, Ireland;2. University of the West of Scotland, School of Engineering, High Street, Paisley PA1 2BE, UK
Abstract:Previous studies have demonstrated that the failure mechanism and energy absorption capacity of expanded metal tubes strongly depends on the orientation of the cells. This paper presents an experimental investigation on the collapse of concentric expanded metal tubes subjected to quasi-static axial compression. Square tubes with two different cell orientations are tested to failure, and the energy absorption characteristics are calculated. The results show that the combination of cell geometries lead to a complex buckling mode interaction, which enhances the energy absorption capacity of expanded metal tubes.
Keywords:Flattened expanded metal  Axial compression  Energy absorption capacity  Concentric tubes  Crashworthiness  Peak load
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