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中文核心期刊
CRACK TIP SUPERBLUNTING: EXPERIMENT, THEORY AND NUMERICAL SIMULATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 1993, 25(4): 468-478. DOI: 10.6052/0459-1879-1993-4-1995-667
Citation: CRACK TIP SUPERBLUNTING: EXPERIMENT, THEORY AND NUMERICAL SIMULATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 1993, 25(4): 468-478. DOI: 10.6052/0459-1879-1993-4-1995-667

CRACK TIP SUPERBLUNTING: EXPERIMENT, THEORY AND NUMERICAL SIMULATION

  • Experimental revelation of superblunting along plane strain predominant crack tip segment is reported here for modified polyproplene. As elucidated by a heuristic model of progressive circumferential cold-draw the formation of superblunting crack tip depends critically on the ratio between the cold -draw propagation speed and the loading speed, and contributes significantly to the material toughening,especially for the improvement on impact toughness. Detailed numerical calculations are conducted based on a...
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