شماره ركورد كنفرانس :
3985
عنوان مقاله :
An investigation on flattening process of metal rectangular columns and nested column system
پديدآورندگان :
Niknejad Abbas niknejad@yu.ac.ir Mechanical Engineering Department, Yasouj University , Dashti Rahmatabadi Asghar dashti@yazd.ac.ir Yazd Universty, , Mansouri Mehdi mansouri.2468@gmail.com Yazd Universty, , Elahi Seyed Mohammad elahiseyyedmohammad@gmail.com Shiraz University of Technology
كليدواژه :
Column , Nested system , Energy absorbing , Flattening , Quasi , static loading.
عنوان كنفرانس :
دومين كنفرانس بين المللي مكانيك و هوافضا
چكيده فارسي :
This paper presents the responses of rectangular columns and nested column system under quasi-static lateral loading. Nested systems in the form of short internally stacked tubes were proposed as energy absorbing structures for applications that have limited crush zones. The crush behavior and energy absorbing responses of these specimens under flattening process were presented and compared with each other. Flattening tests were performed by a DMG machine, model 7166 at a constant cross head speed of 10mm/min in quasi-static condition. In all the experiments, load–deformation curves were obtained by machine chart recorder. It was found that the nested system absorbed 88% more enegy than single columns, appriximatelly.
