Journal
JOURNAL OF MARINE SCIENCE AND TECHNOLOGY
Volume 23, Issue 1, Pages 52-66Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s00773-017-0454-x
Keywords
Peridynamics; Underwater explosion; Numerical stimulation; Ice cover
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Funding
- Marine Engineering Equipment Scientific Research Project of Ministry of Industry and Information Technology of PRC
- National Science and Technology Major Project of China [2016ZX05057020]
- National Natural Science Foundation of China [51639004]
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A bond-based peridynamic approach was applied to investigate the fragmentation of ice cover by blast loads of an underwater explosion. A modified elastic micromodulus was proposed in peridynamics, which can describe the long-range force varying with distance between two particles. The elastic-brittle constitutive model was implemented in numerical model considering different compressive and tensile strength of ice. A blast loading generated by underwater explosion was analyzed, in which the effects of fluid-solid coupling and liquid jets were taken into account. In addition, the failure criterion is defined based on fracture toughness. The simulation results show a good agreement with the experimental data. Furthermore, the parameters that influence the fracture radius of the ice cover were also discussed.
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