砂岩黏性对抗拉强度加载率效应影响的试验研究

doi:10.13722/j.cnki.jrme.2017.0478

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Abstract The impact test and dynamic Brazilian test using the pendulum hammer driven SHPB apparatus were conducted to measure the viscosity coefficient of sandstone and artificial rock and to examine the loading rate effect. The viscosity coefficients of sandstone and artificial rock A and B are 100，10 and 5 kPa•s respectively and were determined with the combined method of experiment and numerical simulation. The dynamic tensile strength of the sandstone and artificial rock samples increase with the loading rate，showing the strong strain-rate dependency. The influence of viscosity on loading rate effect of dynamic tensile strength is validated，but they are not positive correlated. The energy of stress wave propagation in the sample attenuates with the sandstone viscosity under the low loading rate. So the crack initiates at the center of Brazilian sample and propagates along the loading diameter，but the sample is not separated into two halves. The position of crack initiation at the center of sample is thus validated.

Key words： rock mechanics viscosity coefficient loading-rate effect dynamic Brazilian test artificial rock

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	Articles by authors
	NIU Leilei
	ZHU Wancheng
	LI Shaohua
	DAI Feng
	YU Miao

Cite this article:

NIU Leilei,ZHU Wancheng,LI Shaohua, et al. Experimental investigation to effect of viscosity and loading rate on tensile strength of sandstone[J]. , 2017, 36(10): 2466-2473.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0478 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I10/2466

[1]	FAN L F，REN F，MA G W. Experimental study on viscoelastic behavior of sedimentary rock under dynamic loading[J]. Rock Mechanics and Rock Engineering，2012，45(3)：433-438.
[2]	俞缙，钱七虎，赵晓豹. 岩体结构面对应力波传播规律影响的研究进展[J]. 兵工学报，2009，30(12)：308-316.(YU Jin，QIAN Qihu，ZHAO Xiaobao. Research progress on effects of structural planes of rock mass on stress wave propagation law[J]. Acta Armamentarii，2009，30(12)：308-316.(in Chinese))
[3]	FAN L F，MA G W，LI J C. Nonlinear viscoelastic medium equivalence for stress wave propagation in a jointed rock mass[J]. International Journal of Rock Mechanics and Mining Sciences，2012，50(1)：11-18. " target="_blank">
[4]	FAN L F，MA G W，WONG L N Y. Effective viscoelastic behaviour of rock mass with double-scale discontinuities[J]. Geophysical Journal International，2012，191(1)：147-154.
[5]	MA G W，FAN L F，LI J C. Evaluation of equivalent medium methods for stress wave propagation in jointed rock mass[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2013，37(7)：701-715.
[6]	LI J C，LI H B，ZHAO J. An improved equivalent viscoelastic medium method for wave propagation across layered rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2015，73：62-69. " target="_blank">
[7]	ZHANG Q B，ZHAO J. A review of dynamic experimental techniques and mechanical behaviour of rock materials[J]. Rock Mechanics and Rock Engineering，2014，47(4)：1 411-1 478. " target="_blank">
[8]	ZENER C，HOLLOMON J H. Effect of strain rate upon plastic flow of steel[J]. Journal of Applied Physics，1944，15(1)：22-32. " target="_blank">
[9]	KUMAR A. The effect of stress rate and temperature on the strength of basalt and granite[J]. Geophysics，1968，33(3)：501-510. " target="_blank">
[10]	LINDHOLM U S，YEAKLEY L M，NAGY A. The dynamic strength and fracture properties of Dresser basalt[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1974，11(5)：181-191. " target="_blank">
[11]	ROSSI P，TOUTLEMONDE F. Effect of loading rate on the tensilebehaviour of concrete：description of the physical mechanisms[J]. Materials and Structures，1996，29(2)：116-118. " target="_blank">
[12]	QI C Z，WANG M Y，QIAN Q H. Strain-rate effects on the strength and fragmentation size of rocks[J]. International Journal of Impact Engineering，2009，36(12)：1 355-1 364. " target="_blank">
[13]	HUANG S，XIA K，YAN F，et al. An experimental study of the rate dependence of tensile strength softening of Longyou sandstone[J]. Rock Mechanics and Rock Engineering，2010，43(6)：677-683.
[14]	ZHU W C，TANG C A. Numerical simulation of Brazilian diskrock failure under static and dynamic loading[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(2)：236-252. " target="_blank">
[15]	ZHU W C，BAI Y，LI X B，et al. Numerical simulation on rock failure under combined static and dynamic loading during SHPB tests[J]. International Journal of Impact Engineering，2012，49(1)：142-157. " target="_blank">
[16]	宫凤强，李夕兵，董陇军. 圆盘冲击劈裂试验中岩石拉伸弹性模量的求解算法[J]. 岩石力学与工程学报，2013，32(4)：705-713. (GONG Fengqiang，LI Xibin，DONG Longjun. Algorithm to estimate tensile modulus of rock in disk impact splitting test[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(4)：705-713.(in Chinese))
[17]	GONG F Q，ZHAO G F. Dynamic indirect tensile strength of sandstone under different loading rates[J]. Rock Mechanics and Rock Engineering，2014，47(6)：2 271-2 278. " target="_blank">
[18]	GOMEZ J T，SHUKLA A，SHARMA A. Static and dynamic behavior of concrete and granite in tension with damage[J]. Theoretical and Applied Fracture Mechanics，2001，36(1)：37-49. " target="_blank">
[19]	XIA K，DAI F，CHEN R. Advancements in Hopkinson pressure bar techniques and applications to rock strength and fracture[M]. Florida，USA：A.A. Balkema，2011：35-78. " target="_blank">
[20]	ZHANG Q B，ZHAO J. Determination of mechanical properties and full-field strain measurements of rock material under dynamic loads[J]. International Journal of Rock Mechanics and Mining Sciences，2013，60(3)：423-439. " target="_blank">
[21]	HUGHES M L，TEDESCO J W，ROSS C A. Numerical analysis of high strain rate splitting tensile tests[J]. Computers and Structures，1993，47(4/5)：653-671. " target="_blank">
[22]	ROSS C A，THOMPSON P Y，TEDESCO J W. Split-Hopkinson pressure-bar tests on concrete and mortar in tension and compression[J]. ACI Materials Journal，1989，86(5)：475-481. " target="_blank">
[23]	ROSS C A，TEDESCO J W，KUENNEN S T. Effects of strain-rate on concrete strength[J]. ACI Materials Journal，1995，92(1)：37-47. " target="_blank">
[24]	TEDESCO J W，ROSS C A，BRUNAIR R M. Numerical analysis of dynamic split cylinder tests[J]. Computers and Structures，1989，32(3/4)：609-624. " target="_blank">
[25]	DAI F，HUANG S，XIA K W，et al. Some fundamental issues in dynamic compression and tension tests of rocks using split Hopkinson pressure bar[J]. Rock Mechanics and Rock Engineering，2010，43(6)：657-666.
[26]	WANG Q Z，LI W，SONG X L. A method for testing dynamic tensile strength and elastic modulus of rock materials using SHPB[J]. Pure and Applied Geophysics，2006，163(5/6)：1 091-1 100. " target="_blank">
[27]	宋小林，谢和平，王启智. 大理岩动态劈裂试样的破坏应变[J]. 岩石力学与工程学报，2005(8)，24(16)：2 953-2 959.(SONG Xiaolin，XIE Heping，WANG Qizhi. Failure strain of Brazilian disc samples of marble under dynamic split tests[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 953-2 959.(in Chinese)) " target="_blank">
[28]	ZHU W C，NIU L L，LI S H，et al. Dynamic Brazilian test of rock under intermediate strain rate：pendulum hammer-driven SHPB test and numerical simulation[J]. Rock Mechanics and Rock Engineering，2015，48(5)：1 867-1 881. " target="_blank">
[29]	牛雷雷，朱万成，李少华，等. 岩石试样SHPB试验过程中应力均匀性的一维波传播分析[J]. 东北大学学报，2015，36(增1)：6-9.(NIU Leilei，ZHU Wancheng，LI Shaohua，et al. One-dimensional wave analysis on stress uniformity in rock specimen during SHPB tests[J]. Journal of Northeastern University，2015，36(Supp.1)：6-9.(in Chinese)) " target="_blank">
[30]	LUNDBERG B，BLANC R H. Determination of mechanical material properties from the two-point response of an impacted linearly viscoelastic rod specimen[J]. Journal of Sound and Vibration，1988，126(1)：97-108. " target="_blank">
[31]	BACON C. An experimental method for considering dispersion and attenuation in a viscoelastic Hopkinson bar[J]. Experimental Mechanics，1998，38(4)：242-249. " target="_blank">
[32]	BENATAR A，RITTEL D， YARIN A L. Theoretical and experimental analysis of longitudinal wave propagation in cylindrical viscoelastic rods[J]. Journal of the Mechanics and Physics of Solids，2003，51(8)：1 413-1 431. " target="_blank">