Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint
The contact surface of the rough joint has geometrical parameters as the joint matching coefficient (JMC) and the distribution pattern of the contact segments. The specimen used in the modified SHPB test got the artificial joint by sawing some notches on the surface contacted to the output bar. Diff...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/1364839 |
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| author | Chen Xin Tan Wenhui Wang Peng |
| author_facet | Chen Xin Tan Wenhui Wang Peng |
| author_sort | Chen Xin |
| collection | DOAJ |
| description | The contact surface of the rough joint has geometrical parameters as the joint matching coefficient (JMC) and the distribution pattern of the contact segments. The specimen used in the modified SHPB test got the artificial joint by sawing some notches on the surface contacted to the output bar. Different assemblies of the notches formed various contact areas and distribution patterns. Using the modified SHPB tests data, the altered thin-layer interface model was used to analyze the effects of geometrical parameters on one-dimensional stress wave transmission and energy dissipation across a single rough joint. It revealed that the transmission coefficient decreased with the diminution of JMC, and it increased with the scattered distribution pattern as the similar trend for each JMC set. As for the energy coefficients, with the decrease of JMC, the transmission energy coefficient reduced sharply, but it increased very slowly with the reflection energy coefficient and irreversible energy coefficient. It revealed that the JMC of 0.5 was the critical point of the energy dissipation. More energy transmitted across the joint rather than reflecting back and dissipating, when JMC > 0.5. Nevertheless, the irreversible energy coefficient was much larger than the transmission and reflection coefficients, when JMC < 0.5. |
| format | Article |
| id | doaj-art-0b4a7d8bf60f40e09a8110a96ba654bf |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-0b4a7d8bf60f40e09a8110a96ba654bf2025-02-03T05:55:18ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/13648391364839Effects of Geometrical Parameters on Stress Wave Propagation across the Rough JointChen Xin0Tan Wenhui1Wang Peng2Beijing Key Laboratory of Urban Underground Space Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaBeijing Key Laboratory of Urban Underground Space Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaPAN-CHINA Construction Group Co., Ltd, Beijing 100070, ChinaThe contact surface of the rough joint has geometrical parameters as the joint matching coefficient (JMC) and the distribution pattern of the contact segments. The specimen used in the modified SHPB test got the artificial joint by sawing some notches on the surface contacted to the output bar. Different assemblies of the notches formed various contact areas and distribution patterns. Using the modified SHPB tests data, the altered thin-layer interface model was used to analyze the effects of geometrical parameters on one-dimensional stress wave transmission and energy dissipation across a single rough joint. It revealed that the transmission coefficient decreased with the diminution of JMC, and it increased with the scattered distribution pattern as the similar trend for each JMC set. As for the energy coefficients, with the decrease of JMC, the transmission energy coefficient reduced sharply, but it increased very slowly with the reflection energy coefficient and irreversible energy coefficient. It revealed that the JMC of 0.5 was the critical point of the energy dissipation. More energy transmitted across the joint rather than reflecting back and dissipating, when JMC > 0.5. Nevertheless, the irreversible energy coefficient was much larger than the transmission and reflection coefficients, when JMC < 0.5.http://dx.doi.org/10.1155/2018/1364839 |
| spellingShingle | Chen Xin Tan Wenhui Wang Peng Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint Advances in Civil Engineering |
| title | Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint |
| title_full | Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint |
| title_fullStr | Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint |
| title_full_unstemmed | Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint |
| title_short | Effects of Geometrical Parameters on Stress Wave Propagation across the Rough Joint |
| title_sort | effects of geometrical parameters on stress wave propagation across the rough joint |
| url | http://dx.doi.org/10.1155/2018/1364839 |
| work_keys_str_mv | AT chenxin effectsofgeometricalparametersonstresswavepropagationacrosstheroughjoint AT tanwenhui effectsofgeometricalparametersonstresswavepropagationacrosstheroughjoint AT wangpeng effectsofgeometricalparametersonstresswavepropagationacrosstheroughjoint |