Irreducible specific energy of new surfaces creation in materials with crack-type macro defects under pulse action

31st International Conference on Equations of State for Matter

Krivosheev, S.I.^1 ; Magazinov, S.G.^1

Peter the Great Saint-Petersburg Polytechnic University, Polytechnicheskaya 29, Saint-Petersburg

195251, Russia^1

关键词: Computer modeling;    Energy accumulation;    Magnetic pulse;    Material parameter;    Result analysis;    Specific energy;    Surface fracture;    Thermodynamic approaches;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012049/pdf
DOI  :  10.1088/1742-6596/774/1/012049

来源: IOP

【 摘 要 】

The study of destruction of samples with crack-type macro defects in shockwave microsecond duration range mode with amplitude up to 1 GPa was carried out using the magnetic pulse method of pressure pulse creation. The result analysis held on the basis of computer modeling of stressed condition and thermodynamic approach. The relation between the surface fracture energy and the material parameter, such as the energy accumulation time required for destruction, was revealed.