Stress wave radiation from brittle crack extension by molecular dynamics and FEM

Petr Hora, Olga Červená, Alena Uhnáková, Anna Machová, Vladimír Pelikán


We present results for molecular dynamic (MD) and finite element (FEM) simulations in 3D bcc iron crystals, with embedded central through crack (001)[110] of Griffith type, loaded in mode I. The sample geometry and border conditions in MD were chosen in such a way as to invoke a cleavage crack extension. Acoustic emission (AE) sources caused by the crack were analysed on both the atomistic and continuum level with FEM.


molecular dynamics; finite element simulation; bcc iron crystal

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