Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar
Feasibility of rock dynamic properties by split-Hopkinson pressure bar (SHPB) was experimentally and numerically evaluated with ANSYS/LS-DYNA. The effects of different diameters, different loading rates, and different propagation distances on wave dispersion of input bars in SHPB with rectangle and...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/2048591 |
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| _version_ | 1832551876715872256 |
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| author | Kang Peng Ke Gao Jian Liu Yujiao Liu Zhenyu Zhang Xiang Fan Xuyan Yin Yongliang Zhang Gun Huang |
| author_facet | Kang Peng Ke Gao Jian Liu Yujiao Liu Zhenyu Zhang Xiang Fan Xuyan Yin Yongliang Zhang Gun Huang |
| author_sort | Kang Peng |
| collection | DOAJ |
| description | Feasibility of rock dynamic properties by split-Hopkinson pressure bar (SHPB) was experimentally and numerically evaluated with ANSYS/LS-DYNA. The effects of different diameters, different loading rates, and different propagation distances on wave dispersion of input bars in SHPB with rectangle and half-sine wave loadings were analyzed. The results show that the dispersion effect on the diameter of input bar, loading rate, and propagation distance under half-sine waveform loading is ignorable compared with the rectangle wave loading. Moreover, the degrees of stress uniformity under rectangle and half-sine input wave loadings are compared in SHPB tests, and the time required for stress uniformity is calculated under different above-mentioned loadings. It is confirmed that the stress uniformity can be realized more easily using the half-sine pulse loading compared to the rectangle pulse loading, and this has significant advantages in the dynamic test of rock-like materials. Finally, the Holmquist-Johnson-Concrete constitutive model is introduced to simulate the failure mechanism and failure and fragmentation characteristics of rock under different strain rates. And the numerical results agree with that obtained from the experiment, which confirms the effectiveness of the model and the method. |
| format | Article |
| id | doaj-art-5efd1e871b08445f8eb8792f4367ec71 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-5efd1e871b08445f8eb8792f4367ec712025-02-03T06:00:17ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/20485912048591Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure BarKang Peng0Ke Gao1Jian Liu2Yujiao Liu3Zhenyu Zhang4Xiang Fan5Xuyan Yin6Yongliang Zhang7Gun Huang8State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaCollege of Safety Science and Engineering, Liaoning Technical University, Liaoning 125105, ChinaCollege of Safety Science and Engineering, Liaoning Technical University, Liaoning 125105, ChinaCollege of Safety Science and Engineering, Liaoning Technical University, Liaoning 125105, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaAutomotive School, Qingdao Technological University, Qingdao, Shandong 266520, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaFeasibility of rock dynamic properties by split-Hopkinson pressure bar (SHPB) was experimentally and numerically evaluated with ANSYS/LS-DYNA. The effects of different diameters, different loading rates, and different propagation distances on wave dispersion of input bars in SHPB with rectangle and half-sine wave loadings were analyzed. The results show that the dispersion effect on the diameter of input bar, loading rate, and propagation distance under half-sine waveform loading is ignorable compared with the rectangle wave loading. Moreover, the degrees of stress uniformity under rectangle and half-sine input wave loadings are compared in SHPB tests, and the time required for stress uniformity is calculated under different above-mentioned loadings. It is confirmed that the stress uniformity can be realized more easily using the half-sine pulse loading compared to the rectangle pulse loading, and this has significant advantages in the dynamic test of rock-like materials. Finally, the Holmquist-Johnson-Concrete constitutive model is introduced to simulate the failure mechanism and failure and fragmentation characteristics of rock under different strain rates. And the numerical results agree with that obtained from the experiment, which confirms the effectiveness of the model and the method.http://dx.doi.org/10.1155/2017/2048591 |
| spellingShingle | Kang Peng Ke Gao Jian Liu Yujiao Liu Zhenyu Zhang Xiang Fan Xuyan Yin Yongliang Zhang Gun Huang Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar Advances in Materials Science and Engineering |
| title | Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar |
| title_full | Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar |
| title_fullStr | Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar |
| title_full_unstemmed | Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar |
| title_short | Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar |
| title_sort | experimental and numerical evaluation of rock dynamic test with split hopkinson pressure bar |
| url | http://dx.doi.org/10.1155/2017/2048591 |
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