Multiscale Simulation of Porous Quasi-Brittle Ceramics Fracture
| Parent link: | Applied Mechanics and Materials: Scientific Journal Vol. 756 : Mechanical Engineering, Automation and Control Systems (MEACS2014).— 2015.— [P. 196-204] |
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| Other Authors: | , , , , , , |
| Summary: | Title screen Multiscale computer simulation approach has been applied to research mechanisms of failure in ceramic nanostructured ceramics under dynamic loading. The obtained experimental and theoretical data indicate quasi-brittle fracture of nanostructured ZrB[2] ceramics under dynamic compression and tension. Damage nucleation and accumulation in quasi brittle nanostructured ceramics were simulated under impact loadings. Fracture of nanostructured ultra-high temperature ceramics under pulse and shock-wave loadings is provided by fast processes of intercrystalline brittle fracture and relatively slow processes of quasi-brittle failure via growth and coalescence of opened microcracks. For nanostructures ZrB[2] ceramics with porosity of 7 %, the compressive strength at strain rate of 1800 s{-1} is equal to 2440±50 MPa, the tensile strength at strain rate of 300 s{-1} is equal to 155±20 MPa. Режим доступа: по договору с организацией-держателем ресурса |
| Published: |
2015
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| Series: | Material Engineering and Technologies |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4028/www.scientific.net/AMM.756.196 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=641315 |