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Crashworthiness design of multi-cell tapered tubes using response surface methodology | ||
| Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
| مقاله 5، دوره 9، شماره 1 - شماره پیاپی 17، آذر 2019، صفحه 59-75 اصل مقاله (1.08 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jcarme.2018.2825.1292 | ||
| نویسندگان | ||
| Sadjad Pirmohammad* 1؛ Sobhan Esmaeili-Marzdashti2؛ Arameh Eyvazian3 | ||
| 1Mechanical engineering department, Faculty of Engineering, University of Mohaghegh Ardabili | ||
| 2Mechanical Engineering Department, Faculty of Engineering, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran. | ||
| 3Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar | ||
| تاریخ دریافت: 25 مرداد 1396، تاریخ بازنگری: 10 آبان 1397، تاریخ پذیرش: 13 آبان 1397 | ||
| چکیده | ||
| In this article, crashworthiness performance and crushing behavior of tapered structures with four internal reinforcing plates under axial and oblique dynamic loadings have been investigated. These structures have a tapered form with five cross sections of square, hexagonal, octagonal, decagon and circular shape. In the first step, finite element simulations performed in LS-DYNA were validated by comparing with experimental data. The code generated in LS-DYNA was then used to investigate energy absorption behavior of the tapered structures. Response surface methodology and historical data design technique were employed to optimize the cross section perimeter (tapered angle) of the tapered structures by considering two conflicting crashworthiness criteria including EA (energy absorption) and PCF (peak crushing force). The optimization results showed that the optimal tapered angle enhanced by increasing the number of cross section sides (or number of corners). Then, the optimized tapered structures with different cross-sections were compared with each other using a ranking method called TOPSIS to introduce the most efficient energy absorber. The decagonal structure was finally found to be the best energy absorber. | ||
| کلیدواژه‌ها | ||
| energy absorption performance؛ axial and oblique dynamic loading؛ response surface methodology؛ TOPSIS | ||
| مراجع | ||
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