Abstract
In this work, we employ both the state-based peridynamics and the smoothed particle hydrodynamics (SPH) to simulate soil fragmentation/ejection induced by the blast of buried explosives. We use peridynamics representation to model soil medium, and we use SPH representation to model explosive gas. The key of the simulation is the coupling of the two. In the peridynamics–SPH computational domain, there is an interphase zone, in which a peridynamic particle can have SPH particles within its own horizon, while an SPH particle can have peridynamic particles within its supporting domain. The interactions of the peridynamic and SPH particles in this interphase zone are discussed. By assuming the equivalence of the two methods in the current configuration, we study how to choose simulation parameters that can seamlessly couple the two methods. A Drucker–Prager plasticity soil model at finite strain is used for soil medium and a charge model of equation of state is used to model the buried explosive. Numerical examples are carried out to simulate soil fragmentation/ejection induced by the shock waves from the buried explosive. It is shown that the numerical results are in general agreement with that of the experiment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.