IMPACT BEHAVIOUR AND ENERGY DISSIPATION IN METALLIC THIN-WALLED HOLLOW SPHERES

Conference item

Metallic foams made of thin-walled hollow spheres are attractive in applications where weight saving is a critical issue. In this work, an experimentally validated finite element model was developed to investigate the impact behaviour and energy dissipation capacity of single hollow spheres, both of which were found to be significantly influenced by loading velocity. An initial crushing strength that increases with the loading velocity occurs due to inertia effects of wall materials at higher loading velocity (e.g. v > 80 m/s) and related deformation modes. The impact energy dissipated by a hollow sphere increases linearly with the loading velocity.

Authors: Li, P; Petrinic, N; Siviour, C

• Publication status: Published
• Host title: ADVANCES IN HETEROGENEOUS MATERIAL MECHANICS 2011
• Pages: 270-273
• Publication date: 2011-01-01
• ISBN: 9781605950549
• Keywords: energy dissipation; hollow spheres; dynamic behaviour