Fleck, NA and Olurin, OB and Chen, C and Ashby, MF (2001) The effect of hole size upon the strength of metallic and polymeric foams. Journal of the Mechanics and Physics of Solids, 49. pp. 2015-2030. ISSN 0022-5096Full text not available from this repository.
Tensile and compressive tests have been performed on centre-hole panels, made from three types of metallic foams and two polymeric foams. In compression, the foams fail in a ductile, notch-insensitive manner, in support of a "net section strength" criterion. In tension, a ductile-brittle transition is observed for some of the foams at sufficiently large specimen sizes: for a small hole diameter the net section strength criterion is obeyed, whereas for a large hole a local stress criterion applies and the net section strength is reduced. For a number of the foams, the panel size was not sufficiently large to observe this ductile-brittle switch in behaviour. The predictions of a cohesive zone model are compared with the measured strengths and are found to be in good agreement. © 2001 Elsevier Science Ltd. All rights reserved.
|Uncontrolled Keywords:||Cohesive zone model Foams Monotonic and fatigue properties Notch sensitivity Transition flaw size|
|Divisions:||Div C > Materials Engineering|
|Depositing User:||Cron job|
|Date Deposited:||04 Feb 2015 22:15|
|Last Modified:||05 Feb 2015 07:49|