The effect of the implementation of circular holes as crush initiators to the crushing characteristics of mild steel square tubes: experimental and numerical simulation

Mamalis, A.G.; Manolakos, D.E.; Spentzas, K. N.; Ioannidis, M.B.; Koutroubakis, S.; Kostazos, P.K.

doi:10.1080/13588260902826547

Cited by 45 publications

(25 citation statements)

References 4 publications

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“…Finally they concluded that the implementation of more than two holes in each side of the profile does not provide a better performance of the structure. Mamalis and Manolakos (2009), made a numerical and experimental analysis for the problem of localization of circular discontinuities. In their study they confirm that the reply of crushing is affected in a higher proportion by the localization of the holes in the sides of the profile more than in their diameter.…”

mentioning

confidence: 99%

Evaluation of energy absorption performance of steel square profiles with circular discontinuities

Szwedowicz¹,

Estrada²,

Cortés³

et al. 2014

Lat. Am. j. solids struct.

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This article details the experimental and numerical results on the energy absorption performance of square tubular profile with circular discontinuities drilled at lengthwise in the structure. A straight profile pattern was utilized to compare the absorption of energy between the ones with discontinuities under quasi-static loads. The collapse mode and energy absorption conditions were modified by circular holes. The holes were drilled symmetrically in two walls and located in three different positions along of profile length. The results showed a better performance on energy absorption for the circular discontinuities located in middle height. With respect to a profile without holes, a maximum increase of 7% in energy absorption capacity was obtained experimentally. Also, the numerical simulation confirmed that the implementation of circular discontinuities can reduce the peak load (P max ) by 10%. A present analysis has been conducted to compare numerical results obtained by means of the finite element method with the experimental data captured by using the testing machine. Finally the discrete model of the tube with and without geometrical discontinuities presents very good agreements with the experimental results.

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mentioning

confidence: 99%

Evaluation of energy absorption performance of steel square profiles with circular discontinuities

Szwedowicz¹,

Estrada²,

Cortés³

et al. 2014

Lat. Am. j. solids struct.

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“…Dengan menggunakan lubang lingkaran yang diletakkan pada kolom struktur berdinding tipis juga diuji benturan untuk menurunkan gaya tumbukan maksimum dan meningkatkan penyerapan enerrgi yang terjadi saat benturan (Dirgantara, et al, 2013;Estrada, et al, 2017;Malawat, et al, 2017;Nghia, et al, 2014;Mamalis, et al, 2009;Subramaniyan, et al, 2014;Istiyanto, et al, 2014). Selain itu dengan variasi posisi atau jarak lubang lingkaran dari ujung spesimen struktur tabung juga sudah diteliti oleh Estrada dkk (Estrada, et al, 2017) serta Malawat dkk (Malawat, et al, 2017).…”

Section: Pendahuluanunclassified

Analisis Dampak Gaya Tumbukan Melalui Perubahan Bentuk Segi Crush Initiator Pada Struktur Tailor-Welded Blank

Dionisius

Wasiah

Istiyanto

et al. 2019

JTT

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Tailor-welded blank (TWB) structure is one of the vehicle component models used in vehicle parts. In addition, these structures can be used in crashworthiess technology which can reduce injuries during a collision.. The structure of a vehicle that has greater strength can cause passengers to be thrown from the passenger compartment. This paper discusses the effect of faceted holes such as square, hexagonal and octagonal as crush initiator mounted on TWB which results in a maximum impact force (Fmax). The smallest maximum impact force is the criteria achieved from this study. The method used experimental quasi-static loading of the actuator speed of 0.5 mm/s to achieve 9.5 mm of deformation. TWB was made from plate formation with a process of stamping to spot weld. The result showed that the maximum impact force has an increase directly proportional to the addition of the shape of the crush initiator in the amount of 14.633 kN to 18.705 kN. From these results, it can be seen a square hole as best design in obtaining the smallest maximum impact force.

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“…Yapılan çalışmalar genellikle çarpışma kutularının geometrisi üzerine olmuştur. Bazı çalışmalarda dairesel kesitli [2][3][4] çarpışma kutuları kullanılırken bazılarında dikdörtgen ve kare [5][6][7] ve bazılarında ise çok değişik geometriler [8][9][10] ele alınmıştır. Çarpışma kutularının geometrik özelliklerinin değiştirilmesi enerji sönümleme kapasitesi üzerine etkili olduğu bilinmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

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

Altın¹,

Yücesu²

2018

Journal of Polytechnic

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The effect of the implementation of circular holes as crush initiators to the crushing characteristics of mild steel square tubes: experimental and numerical simulation

Cited by 45 publications

References 4 publications

Evaluation of energy absorption performance of steel square profiles with circular discontinuities

Evaluation of energy absorption performance of steel square profiles with circular discontinuities

Analisis Dampak Gaya Tumbukan Melalui Perubahan Bentuk Segi Crush Initiator Pada Struktur Tailor-Welded Blank

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

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