Abstract
To pre-compress the disk-shaped LY12 samples along the radial direction can be done with the aid of overstress assembly by heating or by mechanical clamping, which can also generate the deviatoric stress fields under different states. The spallation signals of these pre-compressed samples are measured by VISAR in the light-gas gun shock experiments. The experimental results show that even under the same impact velocity, the pullback amplitudes of the velocity at the free surface of the samples vary significantly. According to the experimental data, we propose a distinct concept that the material spallation strength is closely related to the deviatoric stress fields in the material. Based on the numerical simulation, we develop a damage constitutive model, which reveals that the deviatoric stress reduces the tensile threshold of the void growth. The numerical investigations also demonstrate that the spallation strength decreases as pre-compression increases. The experimental idea proposed in this paper can also be used to study the spallation process in other structures.
Similar content being viewed by others
References
Addessio F L, Johnson J N. Rate-dependent ductile failure model. J Appl Phys, 1993, 74: 1640–1648
Kanel G I, Razorenov S V, Baumung K, et al. Dynamic yield and tensile strength of aluminum single crystals at temperatures up to the melting point. J Appl Phys, 2001, 90: 136–143
Daniel J S, Richard W S. Interpretation of shock-wave data for beryllium and uranium with an elastic-viscoplastic constitutive model. J Appl Phys, 1981, 52: 5072–5081
Buchar J, Rolc S, Hrebicek J. Strain rate dependence of the spall strength of steels. J Phys IV France, 1997, 7: 951–956
Chen D N, Fan C L, Xie S G, et al. Study on constitutive relations and spall models for oxygen-free high-conductivity copper under planar shock tests. J Appl Phys, 2007, 101: 063532
Cochran S, Banner D. Spall studies in uranium. J Appl Phys, 1977, 48: 2729–2737
Kanel G I, Razorenov S V, Utkin A Y, et al. Spall strength of molybdenum single crystals. J Appl Phys, 1993, 74: 7162–7165
Kanel G I, Baumung K, Singer J, et al. Dynamic strength of aluminum single crystals at melting. Appl Phys Lett, 2000, 76: 3230–3232
Clifton R J. Analysis of failure waves in glasses. Appl Mech Rev, 1993, 46: 540–546
Chen X, Asay J R, Dwivedi S K, et al. Spall behavior of aluminum with varying microstructures. J Appl Phys, 2006, 99: 023528
Taylor P, Cook I T, Salisbury D A. Development of an explosively driven sustained shock generator for shock wave studies. In: Shock Compression of Condensed Matter-2003. Furnish M D, Gupta Y M, Forbes J W, eds. Portland: The American Institute of Physics, 2004. 1203–1208
Keller D V, Penning R J. Exploding foils-The production of plane shock waves and the accleration of thin plates. In: Exploding Wires, Volume 2. Proceedings of the Second Conference on the Exploding Wire Phenomenon. Chace W G, Moore H K, eds. New York: Plenum Press, 1962. 263
Chau H H, Dittbenner G, Hofer W W, et al. Electric gun: A versatile tool for high-pressure shock wave research. Rev Sci Instrum, 1980, 51: 1676–1681
Wang G J, Zhao J H, Tang X S, et al. Study on the technique of electric gun loading for one dimensionally planar strain (in Chinese). Chin J High Pressure Phys, 2005, 19: 269–274
Wang Y G, He H L, Wang L L, et al. Time-resolved dynamic tensile spall of pure aluminum under laser irradiation. J Appl Phys, 2006, 100: 033511
Yellup J M, Saunders D S. Phenominological aspects of a modified fragmentation test using small quantities of explosive. Int J Impact Eng, 1985, 3: 259–271
Li X M, Jin X G, Li D H, et al. Deformation and spallation of cylindrical steel tube loaded by sliding implosion of liquid explosive (in Chinese). Explos Shock Waves, 2003, 23: 523–528
Rybakov A P. Spall in Non-one-dimensional shock waves. Int J Impact Eng, 2000, 24: 1041–1082
Carroll M M, Holt A C. Static and dynamic porecollapse relations for ductile porous media. J Appl Phys, 1972, 43: 1626–1636
Seaman L, Curran D R, Shockey D A. Computational model for ductile and brittle fracture. J Appl Phys, 1976, 47: 4814–4826
Curran D R, Seaman L, Shockey D A. Dynamic failure of solid. Phys Rep, 1987, 147: 253–388
Johnson J N, Addessio F L. Tensile plasticity and ductile fracture. J Appl Phys, 1988, 64: 6699–6712
Wang L L. Foundation of Stress Waves (in Chinese). 2nd ed. Beijing: National Defense Industry Press, 2005. 8
Zhang S W. Study on Spalling Response of Materials under Complicated-Stress States (in Chinese). Dissertation for the Doctoral Degree. Mianyang: China Academy of Engineering Physics, 2006
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, S., Liu, C., Li, Q. et al. A research study on the spallation strength of LY12 aluminum under the pre-compression condition. Sci. China Phys. Mech. Astron. 55, 505–513 (2012). https://doi.org/10.1007/s11433-012-4631-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11433-012-4631-y