TY - JOUR T1 - Çarpışma Kutularının Üzerine Açılan Oyukların Çarpışma Performansı Üzerine Etkisinin İncelenmesi TT - Investigation of the Effect of Corrugated On Crash Performance In Crash Boxes AU - Altın, Murat PY - 2019 DA - March DO - 10.2339/politeknik.403989 JF - Politeknik Dergisi PB - Gazi Üniversitesi WT - DergiPark SN - 2147-9429 SP - 135 EP - 139 VL - 22 IS - 1 LA - tr AB - Pasif güvenlik sistemielemanlarından birisi olan çarpışma kutuları olası bir kaza durumunda hasarınminimum seviyede oluşmasını sağlamak amacıyla kullanılmaktadır. Yapılan buçalışmada çarpışma kutusunun üzerine açılan oyukların çarpışma performansı üzerineetkisi sonlu elemanlar yöntemi kullanılarak incelenmiştir. Çalışmada farklıoyuk genişliklerine sahip çarpışma kutusu tasarımları gerçekleştirilmiştir.Oyukların genişlikleri 1 mm, 2 mm, 3 mm, 4 mm ve 5 mm olarak belirlenmiş veçarpışma kutularının üzerine farklı sayıda açılmıştır. Her bir çarpışmakutusunun et kalınlığı 2 mm olarak alınmıştır. Tasarımları gerçekleştirilençarpışma kutuları Hypermesh programı ile sonlu elemanlarına ayrılmış,Ls-PrePost programı ile malzeme kartları, kontaklar ve sınır şartları gibiözelliklerin belirlenmiş ve Ls-Dyna ile dinamik analizlerigerçekleştirilmiştir. Yapılan analizler sonucunda çarpışma kutularının üzerineoyuk açmanın çarpışma performansı üzerinde olumlu etki gösterdiği tespitedilmiştir. KW - Çarpışma kutusu KW - sonlu elemanlar analizi KW - çarpışma performansı N2 - Crash boxes, one of the components of passive safetysystems, will ensure that damage is minimized in the event of an accident. Inthis study, the impact on the crash performance of the corrugated on the crashbox was investigated using the finite element method. Crash box designs withdifferent corrugate widths were modeled. The widths of the corugate weredetermined as 1 mm, 2 mm, 3 mm, 4 mm and 5 mm, and were opened at differentnumbers on the crash boxes. The wall thickness of each crash box is taken as 2mm. Designed crash boxes are divided into finite elements with Hypermeshprogram, Ls-PrePost program has been used to determine material cards,properties such as contacts and boundary conditions and dynamic analyses werecarried out with Ls-Dyna. As a result of the analyses made, it has been foundthat corrugate on crash boxes has a positive effect on crashworthinessperformance. CR - [1] Pit S., Werner S., Zerbe J. and Gohlich D., “Robust Optimization of Vehicle Crashboxes”, SAE Technical Paper, No. 2014-01-0397, (2014). CR - [2] Sharifi S., Shakeri M., Fakhari H. E. and Bodaghi M., “Experimental investigation of bitubal circular energy absorbers under quasi-static axial load”, Thin-Walled Structures , 89: 42-53, (2015). CR - [3] Othman A., Abdullah S., Ariffin A. K. and Mohamed N.A.N., “Investigating the crushing behavior of quasi-static oblique loading on polymeric foam filled pultruded composite square tubes", Composites Part B: Engineering 95: 493-514, (2016). 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