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Modeling of Brittle Fracture
This chapter describes some of the attempts that have been, and continue to be made, to predict brittle fracture resistance based upon other material parameters, as well as from first‐principle atomistic approaches. J. J. Gilman was one of the first to suggest that brittle fracture could be modeled using a simplistic approach. Basically, he equated the work necessary to separate cleavage planes in a crystal to the energy of the two new surfaces formed during fracture. He used a sine function to model the bonding between the fracture (cleavage) planes in the material. R. Thomson first suggested that the discreteness of a crystal lattice should lead to fracture behavior not expected from a continuum model and this effect is called as “lattice trapping.” The magnitude of the lattice trapping effect strongly depends on the force law governing the atomic interaction.
Modeling of Brittle Fracture
This chapter describes some of the attempts that have been, and continue to be made, to predict brittle fracture resistance based upon other material parameters, as well as from first‐principle atomistic approaches. J. J. Gilman was one of the first to suggest that brittle fracture could be modeled using a simplistic approach. Basically, he equated the work necessary to separate cleavage planes in a crystal to the energy of the two new surfaces formed during fracture. He used a sine function to model the bonding between the fracture (cleavage) planes in the material. R. Thomson first suggested that the discreteness of a crystal lattice should lead to fracture behavior not expected from a continuum model and this effect is called as “lattice trapping.” The magnitude of the lattice trapping effect strongly depends on the force law governing the atomic interaction.
Modeling of Brittle Fracture
Freiman, Stephen W. (author) / Mecholsky, John J. Jr. (author)
The Fracture of Brittle Materials ; 145-166
2018-12-14
22 pages
Article/Chapter (Book)
Electronic Resource
English
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| ASCE | 2021
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