Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement
This paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking mechanism representing the penetration resist...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/2346598 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567271342473216 |
|---|---|
| author | Changheon Song Jintai Chung Jae-Sang Cho Yun-Joo Nam |
| author_facet | Changheon Song Jintai Chung Jae-Sang Cho Yun-Joo Nam |
| author_sort | Changheon Song |
| collection | DOAJ |
| description | This paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking mechanism representing the penetration resistance coefficient and unloading constant. Next, the damping vibration behavior of the bit is investigated considering the impact duration and the rock loading/unloading condition. In addition, the proposed dynamics are simplified by adopting two dimensionless parameters representing the bit-piston mass ratio and the rock-piston stiffness ratio. Finally, the drilling efficiency, defined by the energy transmitted from the piston to the rock, is presented in terms of the proposed parameters. The use of optimal design parameters for percussive drilling systems improved the drilling efficiency. These results are applicable to the design and performance estimation of down-the-hole and top-hammer systems. |
| format | Article |
| id | doaj-art-e5ffbe2bdabc4cf58836ec487ea05898 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e5ffbe2bdabc4cf58836ec487ea058982025-02-03T01:02:04ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/23465982346598Optimal Design Parameters of a Percussive Drilling System for Efficiency ImprovementChangheon Song0Jintai Chung1Jae-Sang Cho2Yun-Joo Nam3Korea Institute of Industrial Technology, Gyeongsan-si, Republic of KoreaDepartment of Mechanical Engineering, Hanyang University, Ansan-si, Republic of KoreaR&D Center, Soosan Heavy Industries Co., Ltd., Hwaseong-si, Republic of KoreaKorea Institute of Industrial Technology, Gyeongsan-si, Republic of KoreaThis paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking mechanism representing the penetration resistance coefficient and unloading constant. Next, the damping vibration behavior of the bit is investigated considering the impact duration and the rock loading/unloading condition. In addition, the proposed dynamics are simplified by adopting two dimensionless parameters representing the bit-piston mass ratio and the rock-piston stiffness ratio. Finally, the drilling efficiency, defined by the energy transmitted from the piston to the rock, is presented in terms of the proposed parameters. The use of optimal design parameters for percussive drilling systems improved the drilling efficiency. These results are applicable to the design and performance estimation of down-the-hole and top-hammer systems.http://dx.doi.org/10.1155/2018/2346598 |
| spellingShingle | Changheon Song Jintai Chung Jae-Sang Cho Yun-Joo Nam Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement Advances in Materials Science and Engineering |
| title | Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement |
| title_full | Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement |
| title_fullStr | Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement |
| title_full_unstemmed | Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement |
| title_short | Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement |
| title_sort | optimal design parameters of a percussive drilling system for efficiency improvement |
| url | http://dx.doi.org/10.1155/2018/2346598 |
| work_keys_str_mv | AT changheonsong optimaldesignparametersofapercussivedrillingsystemforefficiencyimprovement AT jintaichung optimaldesignparametersofapercussivedrillingsystemforefficiencyimprovement AT jaesangcho optimaldesignparametersofapercussivedrillingsystemforefficiencyimprovement AT yunjoonam optimaldesignparametersofapercussivedrillingsystemforefficiencyimprovement |