Papers
Release Time: 2025-04-30Hits:
- Date:2025-04-30
- Title of Paper:Molecular Dynamics Simulation on Crack Initiation at Bi-material Interface Edges
- Journal:Key Engineering Materials
- Summary:Abstract. Molecular dynamics (MD) simulations are performed to study the onset of fracture at the
free edges of bi-material interfaces. The objective is to see whether a unified criterion could be
formulated for crack initiation at interface edges with different angles or not. The simulations are
facilitated with model bi-material systems interacting with Morse pair potentials. Three simulation
models are considered, i.e. the interface edges with angles 45°, 90° and 135°, respectively. The
simulation results show that, at the instant of crack initiation, the maximum stresses along the
interfaces reach the ideal strength of the interface; also, the interface energies just decrease to below
the value of the intrinsic cohesive energy of the interface. These findings revealed that the onset of
fracture at the interface edges with different geometries could be controlled by the maximum stresses
or the cohesive interfacial energy - Co-author:Fulin Shang and Takayuki Kitamura
- Volume:340-341(2007)
- Page Number:949-954
- Translation or Not:No
- Date of Publication:2007-03-13
