Abstract
In the present paper, a front tracking algorithm, which includes a front tracking part and a specified crack growth scheme, is proposed for tracking material interfaces and describing the formation and propagation of a crack. Combined with an improved space–time Conservation Element and Solution Element (CE/SE) scheme, the algorithm can simulate high-velocity impact problems with crack growth, large deformations and high strain rates. The present front tracking algorithm shows high accuracy in the numerical test of a single vortex problem. Numerical simulations are also presented for spall fractures in a plate when impacted by a spherical projectile and perforation of a cylindrical Arne tool steel projectile impacting a plate target. The numerical results are in good agreement with the corresponding experimental observations. It is demonstrated that the present algorithm is feasible and reliable for analyzing fractures.
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