Comparative Study of Trigger Configuration for Enhancement of Crashworthiness of Automobile Crash Box Subjected to Axial Impact Loading

The effect of modal properties of crash box structures with trigger mechanisms towards the crashworthiness by using finite element analysis

“…As shown by the above curve, it could be identified that the first peak from the curve which was the peak crash load, or also known as primary peak force in which it is the maximum force developed during the axial loading process towards the structure or in general, when the structure do oppose the deformation occurred within the structure, the force level would have a rise as in the curve. The deformation would be the first fold of the structure during buckling process [12,24,25]. The next fold is indicated with the secondary peak force and for each fold that occur would yield an oscillation in the force-displacement curve.…”

“…With the presence of trigger, the peak forces are relatively lower for type 2 and type 3 which were 23.9 kN and 32.4 kN respectively. As had been studied by [25], it is also important to identified the magnitude of secondary peak force. This is because the difference between primary and secondary peak force in the force-displacement curve could determine on the amount of total energy absorbed based on the area under the curvature.…”

“…As had been stated before, the stiffness and mass distribution of the structures would affect both modal behaviour as well as the crashworthiness output. Besides on than the existence of the trigger mechanism within the structure, the joining methods are also affecting the stiffness such as the welding and the bolted connection in an assembly [25,26,28]. For journal.ump.edu.my/jmes ◄ this study, the effect of stiffness and mass distribution towards the modal analysis could be observe for crash box structure type 1 which it was the stiffest and heaviest structure among the other structure which explain the highest natural frequency yield for the modal analysis.…”

51CrV4 Yay Çeliğinde Isıl Işlem ve Kesit Geometrisinin Çarpışma Dayanıklılığı Üzerine Etkisi

“…It was observed that the PCF was reduced by adding trigger mechanism (hole, groove etc.) to the crash box (Nasir at. al., 2017).…”

Farklı Geometrik Yapılardaki Çarpışma Kutularının İçerisine Yerleştirilen Alüminyum Köpük Malzemenin Enerji Sönümleme Kapasitesi Üzerine Etkisinin İncelenmesi

“…Çarpışma kutularının geometrik özelliklerinin değiştirilmesi enerji sönümleme kapasitesi üzerine etkili olduğu bilinmektedir. Bunun yanında yapılan diğer çalışmalarda çarpışma kutularının malzemesi [11][12], et kalınlıkları [13][14][15] ve koniklik açısı [16][17][18] değişken parametreler olarak kullanılmıştır. Öztürk ve diğerleri, sonlu elemanlar yöntemini kullanarak LS-DYNA yazılımıyla darbe emici sistemler üzerine bir çalışma yapmışlardır.…”