Molecular Dynamics Studies of Spalling and Melting in Shocked Nanocrystalline Pb

Mei Zhen Xiang; Hai Bo Hu; Jun Chen

doi:10.4028/www.scientific.net/KEM.577-578.613

Paper Titles

Effect of Tearing Strength by Variations in Amount of Adhesive in Laminated Film for Liquid Package
p.597

Long-Term Monitoring of FRP-Concrete Composite Bridge Deck for Cable-Stayed Bridges Using Optical Fiber Sensors
p.601

Skin Stringer Debonding Evolution in Stiffened Composite Panels under Compressive Load: A Novel Numerical Approach
p.605

Damage and Fracture during Contact between a Spherical Indenter and Ice: Experimental Results and Finite Element Simulations
p.609

Molecular Dynamics Studies of Spalling and Melting in Shocked Nanocrystalline Pb
p.613

Numerical Simulation on Failure Process of Rubber-Sleeved Headed Stud Shear Connector
p.617

The Deflection of Donut Type Hollow Slab Considering Crack Behaviors
p.621

Evaluating the Critical Temperature of Creep-Fatigue Interaction a Nickel-Based Powder Metallurgy Superalloy
p.625

Research of Performance about Ceramic Coating on Aluminum Bumper to Resist Hypervelocity Impact
p.629

HomeKey Engineering MaterialsKey Engineering Materials Vols. 577-578Molecular Dynamics Studies of Spalling and Melting...

Molecular Dynamics Studies of Spalling and Melting in Shocked Nanocrystalline Pb

Abstract:

The mechanisms of spalling and melting in nanocrystalline Pb under shock loading are studied by molecular dynamics simulations. Our results show that grain boundaries have significant influences on spalling behaviors in cases of classical spallation and releasing melting. In these cases, cavitation and melting both start on grain boundaries, and they display mutual promotion: melting makes the voids nucleate at smaller tensile stress, and void growth speeds melting. Due to grain boundary effects, the spall strength of nanocrystalline Pb varies slowly with the shock intensity in cases of classical spallation. In cases of releasing melting and compression melting, spall strength of both single-crystalline and nanocrystalline Pb drops dramatically as shock intensity increases.

You might also be interested in these eBooks

Advances in Fracture and Damage Mechanics XII

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 577-578)

Pages:

613-616

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.577-578.613

Citation:

Cite this paper

Online since:

September 2013

Authors:

Mei Zhen Xiang, Hai Bo Hu, Jun Chen

Keywords:

Spall, Ductile Fracture, Molecular Dynamic (MD), Nanocrystalline, Pb

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] P. Andriot, P. Chapron, V. Lambert, and F. Olive, in: Shock waves in condensed matter–1983. North-Holland Amsterdam, 277(1984).

DOI: 10.1016/b978-0-444-86904-3.50065-8

Google Scholar

[2] T. De Resseguier, L. Signor, A. Dragon, and G. Roy, International Journal of Fracture 163, 109 (2010).

Google Scholar

[3] K. Kumar, H. Van Swygenhoven, and S. Suresh, Acta Materialia 51, 5743 (2003).

Google Scholar

[4] S. Plimpton et al., Journal of Computational Physics 117, 1 (1995).

Google Scholar

[5] X. W. Zhou, R. A. Johnson, and H. N. G. Wadley, Phys. Rev. B 69, 144113 (2004).

Google Scholar

[6] M.A. Meyers. Dynamic behavior of materials. Wiley-Interscience, 1994.

Google Scholar

[7] W. J. Nellis, J. A. Moriarty, A. C. Mitchell, M. Ross, R. G. Dandrea, N. W. Ashcroft and N. C. Holmes and G. R. Gathers, Phys. Rev. L 60(14): 1414, 1988.

DOI: 10.1103/physrevlett.60.1414

Google Scholar

[8] D. Partouche-Sebban, JL Pelissier, et al., Journal of applied physics, 97:043521, 2005.

Google Scholar

[9] BK Godwal, C. Meade, R. Jeanloz, A. Garcia, A.Y. Liu, and M.L. Cohen, Science, 248(4954):462–465, 1990.

DOI: 10.1126/science.248.4954.462

Google Scholar

[10] X. Chen, J. Asay, S. Dwivedi, and D. Field, Journal of applied physics 99, 023528 (2006).

Google Scholar