| 刚性弹丸对花岗岩垂直侵彻的理论分析 |
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| 引用本文： | 黄民荣,高永宏,顾晓辉.刚性弹丸对花岗岩垂直侵彻的理论分析[J].南京理工大学学报(自然科学版),2008,32(6). |
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| 作者姓名： | 黄民荣 高永宏 顾晓辉 |
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| 作者单位： | 南京理工大学,机械工程学院,江苏,南京,210094 |
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| 摘 要： | 为研究花岗岩的侵彻机理,应用球形动态空腔膨胀理论对其进行建模.根据花岗岩具有高强度和粘滞性的特点,引入粉碎区动态抗压强度变量,改进了球形空腔膨胀压力的理论模型.通过分析动摩擦力对侵彻深度的影响,得到刚性弹丸垂直侵彻花岗岩时的阻力和深度计算公式.理论计算预估值与试验结果较一致,证明了模型的有效性.
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| 关 键 词： | 刚性弹丸 垂直侵彻 花岗岩 球形空腔膨胀 动态抗压强度 |
Theoretical Analysis for Rigid Projectiles Normal Penetration into Granites |
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| HUANG Min-rong,GAO Yong-hong,GU Xiao-hui.Theoretical Analysis for Rigid Projectiles Normal Penetration into Granites[J].Journal of Nanjing University of Science and Technology(Nature Science),2008,32(6). |
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| Authors: | HUANG Min-rong GAO Yong-hong GU Xiao-hui |
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| Institution: | School of Mechanical Engineering;NUST;Nanjing 210094;China |
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| Abstract: | The theoretical model based on the spherical dynamic cavity expansion theory is used to match the requirement of research on the penetration mechanism of granites.According to the characteristics of high compressive strength and viscosity of granites,the dynamic compressive strength variable of comminuted zone is introduced and the theoretical pressure model of the spherical cavity expansion is ameliorated.The influence of kinetic friction force on the penetration depth into granites is analyzed.The equatio... |
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| Keywords: | rigid projectiles normal penetration granites spherical cavity expansion dynamic compressive strength |
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