Çarpışma Kutularının Üzerine Açılan Oyukların Çarpışma Performansı Üzerine Etkisinin İncelenmesi

Yıl 2019, , 135 - 139, 01.03.2019

Murat Altın

https://doi.org/10.2339/politeknik.403989

Cited By: 2

Öz

Pasif güvenlik sistemi
elemanlarından birisi olan çarpışma kutuları olası bir kaza durumunda hasarın
minimum seviyede oluşmasını sağlamak amacıyla kullanılmaktadır. Yapılan bu
çalışmada çarpışma kutusunun üzerine açılan oyukların çarpışma performansı üzerine
etkisi sonlu elemanlar yöntemi kullanılarak incelenmiştir. Çalışmada farklı
oyuk genişliklerine sahip çarpışma kutusu tasarımları gerçekleştirilmiştir.
Oyukların genişlikleri 1 mm, 2 mm, 3 mm, 4 mm ve 5 mm olarak belirlenmiş ve
çarpışma kutularının üzerine farklı sayıda açılmıştır. Her bir çarpışma
kutusunun et kalınlığı 2 mm olarak alınmıştır. Tasarımları gerçekleştirilen
çarpışma kutuları Hypermesh programı ile sonlu elemanlarına ayrılmış,
Ls-PrePost programı ile malzeme kartları, kontaklar ve sınır şartları gibi
özelliklerin belirlenmiş ve Ls-Dyna ile dinamik analizleri
gerçekleştirilmiştir. Yapılan analizler sonucunda çarpışma kutularının üzerine
oyuk açmanın çarpışma performansı üzerinde olumlu etki gösterdiği tespit
edilmiştir.

Anahtar Kelimeler

Çarpışma kutusu, sonlu elemanlar analizi, çarpışma performansı

Investigation of the Effect of Corrugated On Crash Performance In Crash Boxes

Öz

Crash boxes, one of the components of passive safety
systems, will ensure that damage is minimized in the event of an accident. In
this study, the impact on the crash performance of the corrugated on the crash
box was investigated using the finite element method. Crash box designs with
different corrugate widths were modeled. The widths of the corugate were
determined as 1 mm, 2 mm, 3 mm, 4 mm and 5 mm, and were opened at different
numbers on the crash boxes. The wall thickness of each crash box is taken as 2
mm. Designed crash boxes are divided into finite elements with Hypermesh
program, Ls-PrePost program has been used to determine material cards,
properties such as contacts and boundary conditions and dynamic analyses were
carried out with Ls-Dyna. As a result of the analyses made, it has been found
that corrugate on crash boxes has a positive effect on crashworthiness
performance.

Anahtar Kelimeler

Crash box, Finite element analysis, crash performance

Kaynakça

• [1] Pit S., Werner S., Zerbe J. and Gohlich D., “Robust Optimization of Vehicle Crashboxes”, SAE Technical Paper, No. 2014-01-0397, (2014).
• [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).
• [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).
• [4] Mohammadiha O. and Ghariblu H., “Crush response of variable thickness distribution inversion tubes under oblique loading", Thin-Walled Structures, 109: 159-173, (2016).
• [5] Rezvani M. and M. Nouri., "Axial Crumpling of Aluminum Frusta Tubes with Induced Axisymmetric Folding Patterns" Arabian Journal for Science & Engineering, 39(3): 2179-2190, (2014).
• [6] Sun G., Xu F., Li G. and Li Q., “Crashing analysis and multiobjective optimization for thin-walled structures with functionally graded thickness”, International Journal of Impact Engineering, 64: 62-74, (2014).
• [7] Zhu G., Li S., Sun G., Li G. and Li Q., “On design of graded honeycomb filler and tubal wall thickness for multiple load cases”, Thin-Walled Structures, 109: 377-389, (2016).
• [8] Xiong Z. and Zhang H., “Relative merits of conical tubes with graded thickness subjected to oblique impact loads”, International Journal of Mechanical Sciences, 98: 111-125, (2015).
• [9] Zhang X. and Zhang H., “Experimental and numerical investigation on crush resistance of polygonal columns and angle elements”, Thin-Walled Structures, 57: 25-36, (2012).
• [10] Aktay L., Çakıroğlu C. and Güden M., “Quasi-static axial crushing behavior of honeycomb-filled thin-walled aluminum tubes”, The Open Materials Science Journal, 5: 184-193 (2011).
• [11] Isaac W. and Oluwole O., “Energy absorption improvement of circular tubes with externally press-fitted ring around tube surface subjected under axial and oblique impact loading”, Thin-Walled Structures, 109: 352-366, (2016).
• [12] Langseth M. and Hopperstad O.S., “Static and dynamic axial crushing of square thin-walled aluminium extrusions”, International Journal of Impact Engineering, 18: 7-8, (1996).
• [13] Nagel G. M. and D. P. Thambiratnam. “Computer simulation and energy absorption of tapered thin-walled rectangular tubes”, Thin-walled structures, 43(8): 1225-1242, (2005).
• [14] Abbasi M., Reddy S., Nazari G.A. and Fard M., “Multiobjective crashworthiness optimization of multi-cornered thin-walled sheet metal members” Thin-walled structures, 89: 31-41, (2015).
• [15] Jusuf A., Dirgantara T., Gunawan L. and Putra I.S., “Crashworthiness analysis of multi-cell prismatic structures”, International Journal of Impact Engineering, 78: 34-50, (2015).
• [16] Tarlochan F., Samer F., Hamouda A.M.S., Ramehs S. and Khalid K., “Design of thin wall structures for energy absorption applications: Enhancement of crashworthiness due to axial and oblique impact forces”, Thin-Walled Structures, 71: 7-17, (2013).
• [17] Xiong Z. and Zhang H., “Energy absorption of multi-cell stub columns under axial compression” Thin-Walled Structures, 68: 156-163, (2013).
• [18] Deepak A., Rawat S. and A. K. Upadhyay., “Crashworthiness of Circular Tubes with Structurally Graded Corrugations”, SAE Technical Paper, No. 2016-28-0050, (2016) .
• [19] Asanjarani A., Dibajian S. H. and Mahdian A., “Multi-objective crashworthiness optimization of tapered thin-walled square tubes with indentations” Thin-Walled Structures, 116: 26-36, (2017).
• [20] Rawat, Sharad, et al. "Collapse Behavior and Energy Absorption in Elliptical Tubes with Functionally Graded Corrugations." Procedia Engineering 173 (2017): 1374-1381.
• [21] Alkoles O.M.S., Mahdi E. and Hamouda A.M.S., “Sahari, B.B., “Ellipticity Ratio Effects in the Energy Absorption of Axially Crushed Composite Tubes”, Applied Composite Materials, 10: 339-363, (2003).