Impact Fragmentation of Brittle Materials

Woodward, R. L.; Baxter, B.J.; Pattie, S. D.; McCarthy, Patrick

doi:10.1051/jp4:1991336

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Researchers have identified this unique process to consist of the tunneling of the projectile, radial cracking outward from the impact site, and spalling both on the impact face and the rear face of the target (Pereira et al, 2018). Additionally, the stress wave's reflection produces fragmentation outside the impact site during the ballistic impact (Woodward et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the ballistic impact response of Cor-Tuf UHPC concrete using the HJC constitutive model

Perkins

Duncan

Johnson

et al. 2023

International Journal of Protective Structures

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Concrete offers superior strength in compressive loadings and is implemented for many applications. The high compressive strengths enable concrete to resist high strain rate loading scenarios such as ballistic impacts. A variety of concrete denoted as Cor-Tuf, which is classified as ultra-high-performance concrete with a compressive strength of 210 MPa, is evaluated in this study. The response of this concrete is assessed through a finite element analysis under the high strain rate loadings of ballistic impacts. To capture the response of the concrete, a plasticity and damage constitutive model denoted as the HJC model is implemented. The parameters of this model are calibrated to the Cor-Tuf concrete using confined compression experiments, unconfined compression experiments, and shock experiments. The concrete target is impacted at speeds between 610 m/s through 1112 m/s, and the results are compared to existing experimental data. Our results show that the HJC model can predict the response of this impact to the Cor-Tuf concrete targets as an average error of 5.85% is found. The results of this study present parameters which can be implemented with the HJC concrete model for future studies to model the response of the Cor-Tuf UHPC.

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Section: Introductionmentioning

confidence: 99%

Assessment of the ballistic impact response of Cor-Tuf UHPC concrete using the HJC constitutive model

Perkins

Duncan

Johnson

et al. 2023

International Journal of Protective Structures

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show abstract

“…Dalga yayılımı çatlak başlaması, dallanma ve kırılma modları arası geçişi doğrudan etkilediğinden dinamik kırılmayı yönlendirmektedir [32]. Darbe yükü etkidiğinde gerilme dalgaları temas alanından itibaren ilerlemeye başlar ve arka yüzeyden yansır ve bu etki; darbe yükü altındaki kırılgan malzemede daha fazla dallanma ve parçalanmaya neden olur [33]. Morrisey ve Rice [34] ve Ramanathan ve Fisher [35] kırık ucu önü dalga ilerlemesini modellemişlerdir.…”

Section: Giriş (Introduction)unclassified

Enine darbe yükü altındaki tel halatların peridinamik teorisi ile modellenmesi ve analizi

CANDAŞ,

OTERKUS,

İMRAK

2023

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Çelik tel halatlarda hasar modellemesi çeşitli sayısal yöntemler kullanılarak literatürde geniş çapta incelenmiştir. Bununla birlikte, yapının karmaşıklığından dolayı dinamik yükleme ile ilgili nispeten az sayıda çalışma bulunmaktadır. Bu çalışmada, bir tel halat kesitindeki çatlak ilerlemesini modellemek için Peridinamik (PD) teorisi kullanılmıştır. Enine darbe yüküne maruz kalan tel halat Peridinamik teorisi ile modellenmiştir. Önceden tanımlanmış iki çatlak çizgisi tel kesiti içine yerleştirilmiştir. Kırık ilerleme hızı ve dalga yayılımı, parametrelerin etkisini değerlendirmek için kullanılmıştır. En önemli sonuçlardan biri ufuk yarıçapının aynı aile üyesi sayısı kullanılarak azaltıldığında kırık ilerleme hızında azalış meydana gelmesidir. Bir diğer sonuç darbe yükününün yapıya etkidiği temas yüzeyinin küçülmesi ile yüzeydeki hasarın artmasıdır. Bunlarla beraber, dalga yayılımının çatlak başlangıcı ve gelişimi üzerindeki etkisinin Peridinamik yöntemi ile modellenebileceği gösterilmiştir.

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An Experimental and Numerical Study of the Dynamic Fracture of Glass

Xue

Niu

Lee

et al. 2013

Volume 1: Advanced Packaging; Emerging Technologies; Modeling and Simulation; Multi-Physics Based Reliability; MEMS and NEMS; M

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The needs of glass to resist the scratches, drops impact, and bump from everyday use lead to the importance of investigation of the glass fracture under dynamic impact loading. The strength of the glass under dynamic fracture conditions is significantly larger than that under quasi-static loading. There are several theoretic models. In this study, an accumulated damage model is implemented. The relation among the stress, loading rate, contact time and the fracture is investigated. The effect of impact area, impact energy and impact momentum on the glass fracture has been proved to further improve the dynamic fracture criterion of glass. For the experimental studies, the Digital Image Correlation (DIC) method enables one to obtain the first principal strain of the glass during the impact process. Moreover, the FEA model is developed in ANSYS/LS-DYNA™.

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Impact Fragmentation of Brittle Materials

Cited by 3 publications

References 2 publications

Assessment of the ballistic impact response of Cor-Tuf UHPC concrete using the HJC constitutive model

Assessment of the ballistic impact response of Cor-Tuf UHPC concrete using the HJC constitutive model

Enine darbe yükü altındaki tel halatların peridinamik teorisi ile modellenmesi ve analizi

An Experimental and Numerical Study of the Dynamic Fracture of Glass

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