An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger
Cutter suction dredgers are important pieces of rock excavation equipment in port and waterway construction. It is valuable but difficult to properly estimate the cutting force on the chisel pick of the cutter suction dredger. In this paper, an analytical model, called the crushed zone expansion ind...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/8/10/806 |
| _version_ | 1797550753443741696 |
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| author | Yiping Ouyang Qi Yang Xinquan Chen Yongfu Xu |
| author_facet | Yiping Ouyang Qi Yang Xinquan Chen Yongfu Xu |
| author_sort | Yiping Ouyang |
| collection | DOAJ |
| description | Cutter suction dredgers are important pieces of rock excavation equipment in port and waterway construction. It is valuable but difficult to properly estimate the cutting force on the chisel pick of the cutter suction dredger. In this paper, an analytical model, called the crushed zone expansion induced tensile failure model (CEIT model), is proposed for rock cutting with a chisel pick in order to predict the peak cutting force (<i>Fc</i>) more accurately. First, a review of the existing models for rock cutting with a chisel pick is presented. Next, based on the tensile breakage theory, cavity expansion theory and some hypotheses, the mathematical formula of the CEIT model is obtained. Different from that in the previous models, the effect of the rock on both sides of the chisel pick on <i>Fc</i>, defined as the sidewall effect is considered in the CEIT model. Then, the predicted <i>Fc</i> by the CEIT model is compared with the predicted <i>Fc</i> by existing theoretical models and experimental results to check the validity of the CEIT model. The results show that the CEIT model can well capture the relationships of <i>Fc</i> to the cutting parameters, including cutting width, cutting depth, and rake angle, and can predict the experimental results much better than the existing models. Finally, the sidewall effect and its influence factors according to the CEIT model are discussed. |
| first_indexed | 2024-03-10T15:33:55Z |
| format | Article |
| id | doaj.art-c1e67186b92a4cb1ae8bb799c29e6b86 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T15:33:55Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-c1e67186b92a4cb1ae8bb799c29e6b862023-11-20T17:25:26ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-10-0181080610.3390/jmse8100806An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction DredgerYiping Ouyang0Qi Yang1Xinquan Chen2Yongfu Xu3State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaCutter suction dredgers are important pieces of rock excavation equipment in port and waterway construction. It is valuable but difficult to properly estimate the cutting force on the chisel pick of the cutter suction dredger. In this paper, an analytical model, called the crushed zone expansion induced tensile failure model (CEIT model), is proposed for rock cutting with a chisel pick in order to predict the peak cutting force (<i>Fc</i>) more accurately. First, a review of the existing models for rock cutting with a chisel pick is presented. Next, based on the tensile breakage theory, cavity expansion theory and some hypotheses, the mathematical formula of the CEIT model is obtained. Different from that in the previous models, the effect of the rock on both sides of the chisel pick on <i>Fc</i>, defined as the sidewall effect is considered in the CEIT model. Then, the predicted <i>Fc</i> by the CEIT model is compared with the predicted <i>Fc</i> by existing theoretical models and experimental results to check the validity of the CEIT model. The results show that the CEIT model can well capture the relationships of <i>Fc</i> to the cutting parameters, including cutting width, cutting depth, and rake angle, and can predict the experimental results much better than the existing models. Finally, the sidewall effect and its influence factors according to the CEIT model are discussed.https://www.mdpi.com/2077-1312/8/10/806analytical modelcutting forcechisel pickcutting parameterfracture mechanismcutter suction dredger |
| spellingShingle | Yiping Ouyang Qi Yang Xinquan Chen Yongfu Xu An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger Journal of Marine Science and Engineering analytical model cutting force chisel pick cutting parameter fracture mechanism cutter suction dredger |
| title | An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger |
| title_full | An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger |
| title_fullStr | An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger |
| title_full_unstemmed | An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger |
| title_short | An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger |
| title_sort | analytical model for rock cutting with a chisel pick of the cutter suction dredger |
| topic | analytical model cutting force chisel pick cutting parameter fracture mechanism cutter suction dredger |
| url | https://www.mdpi.com/2077-1312/8/10/806 |
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