國立虎尾科技大學 |

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

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Quasi-Static Crushing Behavior of Nomex® Honeycomb Filled Thin-Walled Aluminum Tubes =/
其他題名:	Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari.
其他題名:	Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari.
作者:	Cakiroglu, Cem.
面頁冊數:	1 online resource (112 pages)
附註:	Source: Masters Abstracts International, Volume: 83-03.
Contained By:	Masters Abstracts International83-03.
標題:	Efficiency. -
電子資源:	click for full text (PQDT)
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.Nomex® Balpetegi̇ ILe Doldurulmus INce Duvarli Alumi̇nyum Tupleri̇n Yari Stati̇k Ezi̇lme Davranislari. - 1 online resource (112 pages)

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

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

Includes bibliographical references

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.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798505501542Subjects--Topical Terms:

1086052
Efficiency.
Index Terms--Genre/Form:

554714
Electronic books.

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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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.
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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.
504 $a Includes bibliographical references
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.
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650 4 $a Investigations. $3 1372519
650 4 $a Simulation. $3 998515
650 4 $a Mechanics. $3 527684
650 4 $a Mathematics. $3 527692
650 4 $a Language. $3 571568
650 4 $a Shear strength. $3 998614
650 4 $a Geometry. $3 579899
650 4 $a Jargon. $3 1465620
650 4 $a Alloys. $3 596847
650 4 $a Deformation. $3 1328788
650 4 $a Adhesives. $3 559224
650 4 $a Energy. $3 784773
650 4 $a Finite element analysis. $3 998010
650 4 $a Stress-strain curves. $3 1475136
650 4 $a Strain hardening. $3 1071909
650 4 $a Yield stress. $3 1466222
650 4 $a Load. $3 1437809
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