چکیده مقاله
In this article, six geometrical groups of brazen circular tubes are used in the lateral compression tests in two conditions: empty and polyurethane foam filled Energy absorption capacity of different specimens is measured and diagram of absorbed energy versus the lateral displacement are sketched during the flattening process, based on the lateral compression tests The curves show that increasing in the lateral displacement and the tube wall thickness causes the increasing in the absorbed energy Comparison of the lateral load displacement diagrams of empty and foam filled tubes results that polyurethane foam filler increase the energy absorption capacity of structure Also, a semi empirical relation derived to predict the specific energy absorption by the empty tubes under the lateral load According to the introduced relation, if the mean diameter of tube redoubles, the specific absorbed energy would multiply to 3 58 Also, if the wall thickness of tube redoubles, the specific energy absorption would multiply to 2 24 Therefore, the increasing in the tube diameter is preferred to the increasing in the wall thickness, based on the energy absorption capability
کلیدواژهها
نویسندگان
A Niknejad
Mechanical Engineering Department, Faculty of Engineering, Yasouj University, Yasouj, Iran
G. H. Liaghat
Mechanical Engineering Department, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
Ali Elahi
Mechanical Engineering Department, Faculty of Engineering, Yasouj University, Yasouj, Iran
شیوه ارجاع
Niknejad, A and Liaghat, G. H. and Elahi, Ali,1390,A Theoretical Relation for Predicting the Specific Energy Absorption by the Brazen Circular Tubes in Flattening Process,12th Iranian Conference on Manufacturing Engineering (ICME 2010),Tehran
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