YangRen-shu, WangYan-bing, YueZhong-wen, LiuGuo-qing. Dynamicbehaviorsofcrackpropagationindirectionalfractureblasting withtwoholes[J]. Explosion And Shock Waves, 2013, 33(6): 631-637. doi: 10.11883/1001-1455(2013)06-0631-07
| Citation:
|
YangRen-shu, WangYan-bing, YueZhong-wen, LiuGuo-qing. Dynamicbehaviorsofcrackpropagationindirectionalfractureblasting withtwoholes[J]. Explosion And Shock Waves, 2013, 33(6): 631-637. doi: 10.11883/1001-1455(2013)06-0631-07
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YangRen-shu, WangYan-bing, YueZhong-wen, LiuGuo-qing. Dynamicbehaviorsofcrackpropagationindirectionalfractureblasting withtwoholes[J]. Explosion And Shock Waves, 2013, 33(6): 631-637. doi: 10.11883/1001-1455(2013)06-0631-07
| Citation:
|
YangRen-shu, WangYan-bing, YueZhong-wen, LiuGuo-qing. Dynamicbehaviorsofcrackpropagationindirectionalfractureblasting withtwoholes[J]. Explosion And Shock Waves, 2013, 33(6): 631-637. doi: 10.11883/1001-1455(2013)06-0631-07
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Dynamicbehaviorsofcrackpropagationindirectionalfractureblasting withtwoholes
- 1.
Schoolof MechanicsandArchitectureEngineering,ChinaUniversityof
- 2.
MiningandTechnology (Beijing),Beijing100083,China;
More Information
- Corresponding author:
WangYan-bing
- Publish Date:
2013-11-25
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Abstract
Usingadynamiccausticsblastloadingsystem,thepaperstudiedthedynamicbehaviorof perforatedcrackpropagationbetweentwoholesandlateralcrackpropagationontheconditionofgroovingwithtwoboreholeblastingandsimultane usinitiation.Ascanbeseenfromtheresults,theperforatedcracktipsdidnotdirectlyencounter, butonewasatthetopandtheotherwasbelow,metand wentonpropagation,thengotclosertothedirectionoftheanisotropicexistingcrack.Thevelocity andaccelerationshowedatypeoffluctuationchangesaswave.Foronecrack,theaccelerationfirstly cametothepeak,thenthevelocitycametothepeak.ThedynamicstressintensityfactorKⅠ decreasedrapidlyfromthemaximum, oscillated,anduptothesecondpeak,thendecreased.KⅡ was almostsmallerthanKⅠ .Thestressintensityfactoroftheperforatedcracktipwasalmostgreater thanthatofthelateralcrack.Thedynamicenergyreleaseratedecreasedrapidly,oscillated,andthen decreased.
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References
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