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Peridynamic Modeling and Impact Test...

Zhou, Wu.

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Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials./
作者:	Zhou, Wu.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:	163 p.
附註:	Source: Dissertation Abstracts International, Volume: 79-12(E), Section: B.
Contained By:	Dissertation Abstracts International79-12B(E).
標題:	Mechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10930104
ISBN:	9780438292079

Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials.
Zhou, Wu.

Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 163 p.

Source: Dissertation Abstracts International, Volume: 79-12(E), Section: B.

Thesis (Ph.D.)--Michigan State University, 2018.

This study focuses on developing a peridynamics (PD) theory based model for the prediction of impact-induced fracture and failure process in laminated composites, and the impact testing of damage evolution in composites.

ISBN: 9780438292079Subjects--Topical Terms:

525881
Mechanics.

Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials.
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245 1 0 $a Peridynamic Modeling and Impact Testing of Dynamic Damage, Fracture, and Failure Process in Fiber-Reinforced Composite Materials.
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300 $a 163 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-12(E), Section: B.
500 $a Adviser: Dahsin Liu.
502 $a Thesis (Ph.D.)--Michigan State University, 2018.
520 $a This study focuses on developing a peridynamics (PD) theory based model for the prediction of impact-induced fracture and failure process in laminated composites, and the impact testing of damage evolution in composites.
520 $a First, the 2D bond-based PD method was evaluated for the dynamic fracture process in polymethyl-methacrylate (PMMA) simply supported beams. PMMA Single Edge Notched Bending (SENB) specimens were impacted with a drop-weight machine. The impact fracture process was recorded with a high-speed camera and the images were analyzed with the digital image correlation (DIC) method. The fracture path and crack velocities simulated with PD basically match the experimental results. However, as the peak crack velocity increases, the ratio of the simulated peak velocity over the experimental one also increases. This deviation was confined with the fitted failure criteria for impact fracture in composites with higher peak velocities in the next chapter.
520 $a To capture the impact fracture process more accurately and apply it to composites, two major developments have been made to the PD theory-based models. Firstly, a bond-based mesoscale peridynamic model has been developed for orthotropic composite materials. The model defines a continuous in-plane material constant Ctheta for orthotropic materials as the mesoscale off-axis modulus in the laminated composite theory. The Ctheta changes continuously from the fiber direction to the transverse direction with an effective orthotropy. This treatment differs from the existing PD composite models which define a micro-modulus Cf for fibers and C m for matrix. It is more efficient in simulations of large volume of materials. The mesoscale model was calibrated and employed to simulate the in-plane impact-induced fracture patterns in the unidirectional fiber composite beams. Secondly, the simultaneous crack-velocity-related dynamic strain energy release rate was introduced into the PD failure criteria. Besides the final failure of the composites, the fracture process and crack velocity can be predicted more accurately by using the fitted PD model. The simulation was validated with the comparison to the experimental results.
520 $a The mesoscale PD model has been extended into three-dimensional for laminated composites. In the model, both the intralayer and interlayer material constants and critical bonds stretch were defined for laminated composites. The PD model was then employed to study the impact damage of the laminated composite plates subjected to out-of-plane impact loading. The matrix and intralayer damage, and the interlayer delamination have been simulated in the composite laminates with different fiber layouts.
520 $a To improve the impact resistance, novel composite structures with reinforcement in the through-thickness direction were explored. A previously developed quasi-three-dimensional (Q3D) braiding method was examined. In this work, the Q3D [0/+/-60 ]4 carbon fiber composite plates were fabricated. The in-plane tensile and the out-of-plane impact experiments were performed. The results showed that the Q3D composite limited the intra-layer damage and the inter-layer delamination while keeping the competitive in-plane stiffness and strength.
590 $a School code: 0128.
650 4 $a Mechanics. $3 525881
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650 4 $a Mechanical engineering. $3 649730
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