Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement
The rockfall process is characterized by bounces of a block on the ground. The coefficient of restitution (COR), which indicates the degree of rockfall energy dissipation, has a significant effect on the rockfall trajectory. The 3-dimensional Distinct Element Code (3DEC) is an effective tool to stud...
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MDPI AG
2022-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/20/10388 |
| _version_ | 1797475654042648576 |
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| author | Yan Ai Hongyan Liu Ziwei Ge |
| author_facet | Yan Ai Hongyan Liu Ziwei Ge |
| author_sort | Yan Ai |
| collection | DOAJ |
| description | The rockfall process is characterized by bounces of a block on the ground. The coefficient of restitution (COR), which indicates the degree of rockfall energy dissipation, has a significant effect on the rockfall trajectory. The 3-dimensional Distinct Element Code (3DEC) is an effective tool to study the rockfall trajectory, and the damping can reflect the COR in numerical modeling. However, the relationship between damping and COR is not understood. A field test is numerically modelled to investigate the correspondence between damping and COR. A series of damping–COR correspondences are obtained and compared with the field test and its previous numerical simulation to verify the rationality of the correspondences. Then, the damping–COR correspondence is adopted in a typical rockslide in Yunnan province, China. The numerical results show that the proposed method is in good agreement with practical engineering. This study provides a new method for predicting rockfall trajectory. |
| first_indexed | 2024-03-09T20:47:11Z |
| format | Article |
| id | doaj.art-eae8eca0951a40f9b115d120dfe2148d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T20:47:11Z |
| publishDate | 2022-10-01 |
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| series | Applied Sciences |
| spelling | doaj.art-eae8eca0951a40f9b115d120dfe2148d2023-11-23T22:43:55ZengMDPI AGApplied Sciences2076-34172022-10-0112201038810.3390/app122010388Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall MovementYan Ai0Hongyan Liu1Ziwei Ge2School of Engineering & Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaSchool of Engineering & Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaSchool of Engineering & Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaThe rockfall process is characterized by bounces of a block on the ground. The coefficient of restitution (COR), which indicates the degree of rockfall energy dissipation, has a significant effect on the rockfall trajectory. The 3-dimensional Distinct Element Code (3DEC) is an effective tool to study the rockfall trajectory, and the damping can reflect the COR in numerical modeling. However, the relationship between damping and COR is not understood. A field test is numerically modelled to investigate the correspondence between damping and COR. A series of damping–COR correspondences are obtained and compared with the field test and its previous numerical simulation to verify the rationality of the correspondences. Then, the damping–COR correspondence is adopted in a typical rockslide in Yunnan province, China. The numerical results show that the proposed method is in good agreement with practical engineering. This study provides a new method for predicting rockfall trajectory.https://www.mdpi.com/2076-3417/12/20/10388rockfalldistinct element methodcoefficient of restitutiondampingmovement characteristicspolyhedral blocks |
| spellingShingle | Yan Ai Hongyan Liu Ziwei Ge Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement Applied Sciences rockfall distinct element method coefficient of restitution damping movement characteristics polyhedral blocks |
| title | Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement |
| title_full | Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement |
| title_fullStr | Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement |
| title_full_unstemmed | Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement |
| title_short | Numerical Investigation on the Correspondence between the Damping and Coefficient of Restitution (COR) in Rockfall Movement |
| title_sort | numerical investigation on the correspondence between the damping and coefficient of restitution cor in rockfall movement |
| topic | rockfall distinct element method coefficient of restitution damping movement characteristics polyhedral blocks |
| url | https://www.mdpi.com/2076-3417/12/20/10388 |
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