用气炮研究岩石类材料冲击压缩特性的反冲击法
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摘要
介绍了一种在气炮上研究材料冲击压缩特性的反向冲击法,即将待测试样装在弹头上,用电磁粒子速度计测量有机玻璃靶中的波后粒子速度,依据阻抗匹配原理来换算待测材料的动力学状态量。该方法对研究岩石类等特殊材料(如非均匀材料、铁磁材料、导电材料、昂贵材料、难加工材料)的冲击压缩特性是非常有益的。
The reverse ballistic configuration to study the impact compression properties of material by means of a light-gas gun was described.In the test a disc-shaped specimen of the test material was mounted in the projectile and caused to undergo planar impact on a stationary diagnostic targets of PMMA.The electromagnetic particle velocity gages embedded in the target were used to obtain the experimental data,and the dynamic states of the test medium was determined by use of the impedance match method.It is helpful for studying the impact compression properties of rocks and other special materials such as inhomogeneous,ferromagnetic,electric,expensive,and hard to machine.
The reverse ballistic configuration to study the impact compression properties of material by means of a light-gas gun was described.In the test a disc-shaped specimen of the test material was mounted in the projectile and caused to undergo planar impact on a stationary diagnostic targets of PMMA.The electromagnetic particle velocity gages embedded in the target were used to obtain the experimental data,and the dynamic states of the test medium was determined by use of the impedance match method.It is helpful for studying the impact compression properties of rocks and other special materials such as inhomogeneous,ferromagnetic,electric,expensive,and hard to machine.
引文
1LuFY.Investigationoncharacteristicsofdynamicres-ponseofthenewconcrete犤A犦.proceedingsofthe2ndinternationalsymposiumonimpactengineering犤C犦.Beijing:犤s.n.犦,1996,232-236.
2尚嘉兰,沈乐天,赵宇辉等.BukitTimah花岗岩的动态本构关系犤J犦.岩石力学与工程学报,1998,17(6):634-641.
3信礼田,刘建武,何翔等.高应变速率下石灰岩的力学特性犤J犦.岩石力学与工程学报,1998,17(增):780-783.
4施绍裘,陈江瑛,李大红等.水泥砂浆石在一维应变强动载荷下计及内部损伤的冲击绝热关系的研究犤J犦.爆炸与冲击,1999,19(增):73-76.
5王占江,李焰,张德志等.高强度水泥砂浆的一维应变动力学特性犤J犦.高压物理学报,1999,13(增):344-348.
6李欣竹,吴强,张汉钊等.泡沫硅橡胶冲击压缩性实验研究犤J犦.高压物理学报,1998,12(4):291-296.
7徐小荷,邢国军,王标.岩石中应变波激发的电磁效应犤J犦.地震学报,1998,20(1):96-100.
2尚嘉兰,沈乐天,赵宇辉等.BukitTimah花岗岩的动态本构关系犤J犦.岩石力学与工程学报,1998,17(6):634-641.
3信礼田,刘建武,何翔等.高应变速率下石灰岩的力学特性犤J犦.岩石力学与工程学报,1998,17(增):780-783.
4施绍裘,陈江瑛,李大红等.水泥砂浆石在一维应变强动载荷下计及内部损伤的冲击绝热关系的研究犤J犦.爆炸与冲击,1999,19(增):73-76.
5王占江,李焰,张德志等.高强度水泥砂浆的一维应变动力学特性犤J犦.高压物理学报,1999,13(增):344-348.
6李欣竹,吴强,张汉钊等.泡沫硅橡胶冲击压缩性实验研究犤J犦.高压物理学报,1998,12(4):291-296.
7徐小荷,邢国军,王标.岩石中应变波激发的电磁效应犤J犦.地震学报,1998,20(1):96-100.
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