Mode II brittle fracture assessment using an energy based criterion
| Autor: | Rashidi Moghaddam Morteza, Ayatollahi Majid, R., Razavi S.M.J., Filippo, Berto |
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| Rok vydání: | 2016 |
| Předmět: |
Т-НАПРЯЖЕНИЯ
Condensed Matter::Materials Science T-STRESS ХРУПКОЕ РАЗРУШЕНИЕ FRACTURE TOUGHNESS РАЗРУШЕНИЕ ТИПА II MODE II FRACTURE Computer Science::Computational Geometry КРИТЕРИЙ ПЛОТНОСТИ ЭНЕРГИИ ДЕФОРМАЦИИ BRITTLE FRACTURE СОПРОТИВЛЕНИЕ РАЗРУШЕНИЮ Physics::Geophysics STRAIN ENERGY DENSITY CRITERION |
| DOI: | 10.24411/1683-805x-2016-00026 |
| Popis: | In this paper the minimum strain energy density criterion is modified to predict the values of mode II fracture toughness reported in literature for several brittle and quasi-brittle materials. The experimental results are all related to mode II fracture tests performed on the semi-circular bend specimen. The modified mode II fracture criterion takes into account the effect of T-stress (in addition to the singular terms of stresses/strains) when calculating the strain energy density factor at a very small critical distance from the crack tip. It is shown that the proposed criterion provides significantly better predictions for mode II fracture toughness compared with the classical minimum strain energy density criterion. |
| Databáze: | OpenAIRE |
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