Dynamicpropagationbehaviorsofanobliqueedgecrack

inmaterialunderblastloading

YUE Zhong-wen; YANG Ren-shu; DONG Ju-cai; HAN Peng-fe

doi:10.11883/1001-1455(2011)01-0075-06

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YUE Zhong-wen, YANG Ren-shu, DONG Ju-cai, HAN Peng-fe. Dynamicpropagationbehaviorsofanobliqueedgecrackinmaterialunderblastloading[J]. Explosion And Shock Waves, 2011, 31(1): 75-80. doi: 10.11883/1001-1455(2011)01-0075-06

Citation:

YUE Zhong-wen, YANG Ren-shu, DONG Ju-cai, HAN Peng-fe. Dynamicpropagationbehaviorsofanobliqueedgecrack inmaterialunderblastloading[J]. Explosion And Shock Waves, 2011, 31(1): 75-80. doi: 10.11883/1001-1455(2011)01-0075-06

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Dynamicpropagationbehaviorsofanobliqueedgecrack inmaterialunderblastloading

doi: 10.11883/1001-1455(2011)01-0075-06

1.
Schoolof Mechanics& CivilEngineering,ChinaUniversityof MiningandTechnology,
2.
Beijing100083,China

Funds:

NationalNaturalScienceFoundationofChina(50774086)

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Corresponding author: YUE Zhong-wen
Publish Date: 2011-01-25

Abstract

Abstract

Thepropagationofexplosionstresswavesinstripscontaininganobliqueedgecrackwasanalyzed. Andaseriesofcausticexperimentswereconductedtoexplorethecrackextensionunderblast loading.Investigatedresultsshowthatthecrackgrowthvelocity,accelerationanddynamicstressintensityfactorsfluctuateduringthepropagationoftheobliqueedgecrackunderexplosionstress waves.Themaximumvaluesofthecrackgrowthvelocity,accelerationanddynamicstressintensity factorKdⅠ atthecracktipare222m/s,11.01MN/s2and0.735MN/m3/2,respectively.Thetensile fieldatthetipoftheobliqueedgecrackisamainfactortoinducecrackinitiationandpropagation.
- solid mechanics,
- crackpropagation,
- dynamiccaustics,
- obliqueedgecrack,
- explosion stresswave