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OTOMOBİL ÖN TAMPON ÇARPIŞMA ANALİZİ VE OPTİMİZASYONU

Crash Analysis of Vehicle Front Bumper and Its Optimization

Journal Name:

  • Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2008

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The objective of this paper is to investigate the crash energy absorbtion of bumper-crash box system subjected to 40% offset impact loading. Nonlinear finite element model was created and impact test was simulated using Ls-Dyna software. Design of experiment method is used to construct approximated design functions then size optimization technique is defined to solve the problem of minimization of the total weight. Matlab was used to solve the size optimization problem and optimum sheet thickness value was determined for the impact condition of 40% offset. The study also has shown that crushing initiator geometry on the crash box significantly decrease the maximum initial reaction force but its effect on energy absorbing capacity was relatively small.
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Abstract (Original Language): 
Bu makalede, %40 ofsetli çarpışmaya maruz kalan otomobil ön tampon ve darbe emici sisteminin enerji absorbsiyonu incelenmiştir. Bu amaçla lineer olmayan sonlu elemanlar modeli oluşturulmuş ve Ls-Dyna yazılımı ile çözülmüştür. Deney tasarımı metodu ile yaklaşık tasarım fonksiyonları oluşturulmuş ve toplam ağırlığın minimizasyonu için boyut optimizasyon problemi tanımlanmıştır. Optimizasyon problemi Matlab yardımı ile çözülerek %40 ofsetli çarpışma durumu için optimum sac kalınlığı bulunmuştur. Bu çalışma ile ayrıca darbe emici üzerinde oluşturulan katlanma başlatıcı geometrilerin toplam enerji absorbsiyonuna etkisinin oldukça az olmasına karşı, çarpma başlangıcındaki maksimum tepki kuvvetlerini önemli ölçüde düşürdüğü gözlenmiştir.
FULL TEXT (PDF): 
PDF icon arastirmax-otomobil-tampon-carpisma-analizi-optimizasyonu.pdf
  • 1
119-127
  • Turkish

REFERENCES

References: 

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