Finite element analysis of collapse of front side rails with new types of crush initiators

Eren, İlker; Gür, Yılmaz; Aksoy, Ziya

doi:10.1007/s12239-009-0051-z

Cited by 14 publications

(7 citation statements)

References 6 publications

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“…Evidence has shown that the collapse begins at the initiators' location [14]. Besides, no more than two initiators in the axial direction of the corners result in a better crashworthiness performance than the other configurations [2,18]. Thus, to study the effects of the different number of initiators, several square tubes with initiators were conducted, as shown in Fig.…”

Section: Effects Of Number and Placement Of Crush Initiatorsmentioning

confidence: 99%

“…Thin-walled square tube structures have been widely applied in vehicles as energy absorbers to protect passengers from severe injury due to their excellent energy absorption and resistance to deformation [1]. The square tubes are expected to fold as progressive buckling to absorb more impact energy during an impact [2]. However, square tubes usually collapse in Eulerian buckling mode with a high peak load and lower energy absorption [3].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, failure induced by the hole-type initiators might be another effective tunable parameter on crushable components. Eren et al [2] studied the axial crushing behavior of square tubes with dent-type initiators, rib-type initiators, and holetype initiators. Their results demonstrated that the hole-type initiator with suitable size parameters might have similar crashworthiness performance as dent-type and rib-type initiators.…”

Section: Introductionmentioning

confidence: 99%

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A machine learning based optimisation method to evaluate the crushing behaviours of square tubes with rectangular-hole-type initiators

Liang

Liu

et al. 2023

International Journal of Crashworthiness

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Rectangular-hole-type crush initiators have attracted much attention due to their exceptional advantages in improving crashworthiness performance. Unfortunately, undesired deformation buckling modes i.e., bifurcation buckling, can occur and challenge optimization processes. This paper aims remedies to this limitation and proposes a machine learning based optimization method that removes these undesired deformation modes to effectively evaluate the effect of initiators' parameters in improving crush response. First, finite element models of square tubes with different numbers and positions of initiators were built and computed. Second, the complex proportional assessment (COPRAS) method was adopted to rank the crashworthiness characteristics. The results demonstrated that square tubes with two sets of four corner holes along the axial direction were the best choice. Finally, the optimization method based on machine learning was employed to evaluate the influence of the initiator's size on the crushing behaviors for minimizing the initial peak force (IPF), maximizing the energy absorption (EA), and crushing force efficiency (CFE). The results illustrated that the IPF of the optimized design Pareto front upper limit is about 21.94% lower, with 0.08% and 36.67% higher EA and CFE, respectively, than those of the best choice observed from COPRAS. This study highlights the ability of the proposed machine learning based optimization method to improve crashworthiness performance.

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Section: Effects Of Number and Placement Of Crush Initiatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A machine learning based optimisation method to evaluate the crushing behaviours of square tubes with rectangular-hole-type initiators

Liang

Liu

et al. 2023

International Journal of Crashworthiness

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“…Eren et al (Eren, et al, 2009) juga sudah melakukan penelitian mengenai crush initiator tipe rib pada front side rail dengan menggunakan metode elemen hingga eksplisit dengan ANSYS/LS-DYNA. Tabung persegi aluminium AA6061-T6 dengan through hole-discontinuitas juga diinvestigasi oleh Cheng et al (Cheng, et al, 2006) dengan mendapatkan kapasitas penyerapan energi saat tabung tersebut diberikan beban aksial secara kuasi statik.…”

Section: Tinjauan Pustakaunclassified

Design Optimization of Crashworthiness in Square Tube as Thin Walled Structure With Variations of Crush Initiator: Stripe-Parallelogram-Trigon

Dionisius

Istiyanto

Endramawan

et al. 2018

jtt

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“…advanced models which can be either analytical models [9,28] or nowadays, principally, computational models [1,10,11,28,30,33,39]. Such models can also be used to get an optimal design of a vehicle under crash impact loads [40,52,53].…”

mentioning

confidence: 99%

Computational strategy for the crash design analysis using an uncertain computational mechanical model

2012

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International audienceThe framework of this paper is the robust crash analysis of a motor vehicle. The crash analysis is carried out with an uncertain computational model for which uncertainties are taken into account with the parametric probabilistic approach and for which the stochastic solver is the Monte Carlo method. During the design process, different configurations of the motor vehicle are analyzed. Usual interpolation methods cannot be used to predict if the current configuration is similar or not to one of the previous configurations already analyzed and for which a complete stochastic computation has been carried out. In this paper, we propose a new indicator that allows to decide if the current configuration is similar to one of the previous analyzed configurations while the Monte Carlo simulation is not finished and therefore, to stop the Monte Carlo simulation before the end of computation

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Finite element analysis of collapse of front side rails with new types of crush initiators

Cited by 14 publications

References 6 publications

A machine learning based optimisation method to evaluate the crushing behaviours of square tubes with rectangular-hole-type initiators

A machine learning based optimisation method to evaluate the crushing behaviours of square tubes with rectangular-hole-type initiators

Design Optimization of Crashworthiness in Square Tube as Thin Walled Structure With Variations of Crush Initiator: Stripe-Parallelogram-Trigon

Computational strategy for the crash design analysis using an uncertain computational mechanical model

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