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Effect of Holes on Energy Absorption of Axially Loaded Carbon Fiber Composite Tubes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effect of Holes on Energy Absorption of Axially Loaded Carbon Fiber Composite Tubes./
作者:	Alhyari, Omar.
面頁冊數:	1 online resource (128 pages)
附註:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
標題:	Mechanical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28318708click for full text (PQDT)
ISBN:	9798738653209

Effect of Holes on Energy Absorption of Axially Loaded Carbon Fiber Composite Tubes.
Alhyari, Omar.

Effect of Holes on Energy Absorption of Axially Loaded Carbon Fiber Composite Tubes. - 1 online resource (128 pages)

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (Ph.D.)--Wayne State University, 2021.

Includes bibliographical references

This project aims to provide understanding of the effects the holes on Carbon Fiber Reinforced Polymer (CFRP) unidirectional circular tubes capability of absorbing crush energy. In this investigation, tubes with one and two holes in three different locations and two different diameters were experimentally tested under quasi-static loading and results were compared to regular unidirectional tube. The regular tube and a tube with one hole were tested under dynamic load to investigate the hole effects. The holes created a crack which propagate circumferentially causing the tube to collapse and a dramatic drop in load occurred and thus a reduction in absorbed energy.Tubes with holes located 100 mm from the chamfered top, showed a reduction in absorbed energy by 48-60% under quasi-static test, while tubes with holes located 75 mm from the chamfered top showed a reduction by 74-75% in absorbed energy. The tube with one hole located 50 mm from the chamfered top failed after reaching the peak force and the absorbed energy is neglected. It was found that regardless the hole diameter or the number of holes, the drop in the load was related to the hole location. Specimens with one hole or two holes located 100 mm from the chamfered top or located 75 mm from the chamfered top, cracked after the load platen crushed 65% of the distance between the chamfered top and the center of the hole. The regular tube and a tube with one hole were tested under dynamic load. The performance of both tubes were similar. The hole did not affect the tube performance and the tubes crushed as anticipated. Finite element modeling using LS-DYNA was developed to predict the failure of the tubes and energy absorption. Good correlation was obtained between finite element analysis and experimental results. The results of this project with future work can used to improve the damage tolerance of composite tubes used to absorbed energy in vehicle structure.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798738653209Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Carbon fiber reinforced plasticsIndex Terms--Genre/Form:

542853
Electronic books.

Effect of Holes on Energy Absorption of Axially Loaded Carbon Fiber Composite Tubes.
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