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Quasi-Static Crushing Behavior of No...

Cakiroglu, Cem.

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Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes = = Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari .

Record Type:	Electronic resources : Monograph/item
Title/Author:	Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes =/
Reminder of title:	Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari .
Author:	Cakiroglu, Cem.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2008,
Description:	112 p.
Notes:	Source: Masters Abstracts International, Volume: 83-03.
Contained By:	Masters Abstracts International83-03.
Subject:	Load. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28476209
ISBN:	9798505501542

Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes = = Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari .
Cakiroglu, Cem.

Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes =Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari . - Ann Arbor : ProQuest Dissertations & Theses, 2008 - 112 p.

Source: Masters Abstracts International, Volume: 83-03.

Thesis (M.Sc.)--Izmir Institute of Technology (Turkey), 2008.

The experimental and numerical studies presented in this thesis were focused on the experimental and numerical quasi-static crushing behavior of Nomex® honeycomb filled thin-walled aluminum tubes. Nomex® honeycombs having different cell sizes (3.2, 4.8 and 6.4 mm) and the same density (48 kg/m3) were used to fill thin walled aluminum tube, 25 mm in diameter and 0.29 mm in thickness. Compression tests were conducted at quasi-static the strain rates of 1.64 10-2, 6.56 10-3 and 3.28 10-3 s-1. The results showed that the honeycomb cell size had a strong effect on the crushing behavior. Decreasing cell size increased crushing loads and the specific absorbed energy values of empty tubes. The highest strengthening effect of filling was found in 3.2 mm cell size honeycomb filled tubes. Although no effects of 4.8 and 6.4 mm cellsize honeycomb filling on the deformation mode of tube was observed (mixed), 3.2 mm cell size honeycomb filling changed the deformation mode to mixed/concertina. The numerical model of empty tube, 6.4 mm cell size honeycomb and 6.4 mm cell size honeycomb filled tube were performed using LS-DYNATM and ANSYSTM finite element analysis programs. To acquire maximum computational efficiency, a mesh optimization was done. The effect of the honeycomb cell wall thickness was also investigated numerically and shown to have a strong effect on the crushing behavior of honeycomb. The experimental and numerical studies conducted showed that 3.2 mm cell size Nomex® honeycomb might become an alternative to aluminum foam filler in thin walled tubes as long as the tube crushing load was comparable with honeycomb crushing load.

ISBN: 9798505501542Subjects--Topical Terms:

3562902
Load.

Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes = = Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari .
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035 $a (MiAaPQ)IzmirTech3929
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040 $a MiAaPQ $c MiAaPQ
100 1 $a Cakiroglu, Cem. $3 3770819
245 1 0 $a Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes = $b Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari .
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2008
300 $a 112 p.
500 $a Source: Masters Abstracts International, Volume: 83-03.
500 $a Advisor: Guden, Mustafa;Tasdemi̇rci̇, Alper.
502 $a Thesis (M.Sc.)--Izmir Institute of Technology (Turkey), 2008.
520 $a The experimental and numerical studies presented in this thesis were focused on the experimental and numerical quasi-static crushing behavior of Nomex® honeycomb filled thin-walled aluminum tubes. Nomex® honeycombs having different cell sizes (3.2, 4.8 and 6.4 mm) and the same density (48 kg/m3) were used to fill thin walled aluminum tube, 25 mm in diameter and 0.29 mm in thickness. Compression tests were conducted at quasi-static the strain rates of 1.64 10-2, 6.56 10-3 and 3.28 10-3 s-1. The results showed that the honeycomb cell size had a strong effect on the crushing behavior. Decreasing cell size increased crushing loads and the specific absorbed energy values of empty tubes. The highest strengthening effect of filling was found in 3.2 mm cell size honeycomb filled tubes. Although no effects of 4.8 and 6.4 mm cellsize honeycomb filling on the deformation mode of tube was observed (mixed), 3.2 mm cell size honeycomb filling changed the deformation mode to mixed/concertina. The numerical model of empty tube, 6.4 mm cell size honeycomb and 6.4 mm cell size honeycomb filled tube were performed using LS-DYNATM and ANSYSTM finite element analysis programs. To acquire maximum computational efficiency, a mesh optimization was done. The effect of the honeycomb cell wall thickness was also investigated numerically and shown to have a strong effect on the crushing behavior of honeycomb. The experimental and numerical studies conducted showed that 3.2 mm cell size Nomex® honeycomb might become an alternative to aluminum foam filler in thin walled tubes as long as the tube crushing load was comparable with honeycomb crushing load.
520 $a Bu calisma Nomex® bal petegi ile doldurulmus ince duvarli aluminyum tuplerinyari statik ezilme davranislarinin numerik ve deneysel olarak incelenmesinikapsamaktadir. 25 mm capinda ve 0.29 mm kalinligindaki aluminyum tupler 3 farklihucre boyutuna (3,2, 4,8 ve 6,4 mm) ve ayni yogunluga sahip (48 kg/m3) Nomex® balpetekleri ile doldurulmustur. Basma testleri, 1.64 10-2, 6.56 10-3 ve 3.28 10-3 s-1 yaristatik deformasyon hizlarinda gerceklestirilmistir. Sonuclar hucre boyutunun bal petegiezilme davranislari uzerinde onemli bir etkisi oldugunu ve daha dusuk hucreboyutlarinda bos tuplerin ezilme yukununun ve spesifik sonumlenen enerji miktarlarininarttigini gostermistir. En yuksek guclendirme etkisi 3.2 mm bal petegi ile doldurulmustuplerde bulunmustur. 4.8 ve 6.4 mm hucre boyutundaki bal petegi dolumunun bostupun deformasyon modu (karisik deformasyon) uzerinde etkisinin olmadigi ancak 3.2mm hucre boyutundaki bal petegi dolumunun deformasyon modunu degistirdigi(karisik/konsertina deformasyon) bulunmustur. Bos tup, 6.4 mm hucre boyutundaki balpetegi ve 6.4 mm hucre boyutundaki bal petegi ile doldurulmus tuplerin numerikmodelleri LS-DYNATM ve ANSYSTM sonlu eleman analiz programlari kullanilarakolusturulmustur. Numerik model eleman sayisi hesaplama verimliligi goz onunealinarak optimize edilmistir. Bal petegi hucre duvar kalinliginin etkisi ayrica numerikolarak incelenmis ve bal petegi ezilme davranislari uzerinde onemli bir etkisinin oldugubulunmustur. Yapilan deneysel ve numerik calismalar bos tuplerin doldurulmasinda,3.2 mm hucre boyutundaki Nomex® bal peteginin, tup ezilme yukunun bal petegiezilme yuku ile karsilastirilabilecegi durumlarda, aluminyum kopuklere alternatif birdolgu malzemesi olabilecegini gostermistir.
590 $a School code: 2215.
650 4 $a Load. $3 3562902
650 4 $a Yield stress. $3 3561163
650 4 $a Strain hardening. $3 3681455
650 4 $a Stress-strain curves. $3 3560389
650 4 $a Finite element analysis. $3 3554062
650 4 $a Energy. $3 876794
650 4 $a Adhesives. $3 871837
650 4 $a Deformation. $2 lcstt $3 3267001
650 4 $a Alloys. $3 654175
650 4 $a Jargon. $3 3560679
650 4 $a Geometry. $3 517251
650 4 $a Shear strength. $3 3680813
650 4 $a Language. $3 643551
650 4 $a Mathematics. $3 515831
650 4 $a Mechanics. $3 525881
650 4 $a Simulation. $3 644748
650 4 $a Investigations. $3 3561159
650 4 $a Efficiency. $3 753744
690 $a 0791
690 $a 0679
690 $a 0405
690 $a 0346
710 2 $a Izmir Institute of Technology (Turkey). $3 3561138
773 0 $t Masters Abstracts International $g 83-03.
790 $a 2215
791 $a M.Sc.
792 $a 2008
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28476209