Numerical analysis of disc cutter forces in linear rock cutting procedure using finite element method

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MOHAMMADI REZA; SAMIMI NAMIN FARHAD; KHADEMI HAMIDI JAFAR

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Journal: JOURNAL OF ANALYTICAL AND NUMERICAL METHODS IN MINING ENGINEERING Year:2019 | Volume:9 | Issue:20 Page(s): 53-66

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Title

Numerical analysis of disc cutter forces in linear rock cutting procedure using finite element method

Author(s)

MOHAMMADI REZA | SAMIMI NAMIN FARHAD | KHADEMI HAMIDI JAFAR | Issue Writer Certificate

Keywords

Mechanical Excavation

Tunnel Boring Machine

ABAQUS Software

Linear Cutting Test

Abstract

Summary: One of the most important results of the linear rock cutting process is the accurate estimation of the cutting forces applied to the disc cutter which can be a prelude to the development of models for predicting the performance of all Tunnel Boring Machines (TBM). In this study, numerical modeling of rock cutting process by a disc cutter using finite element code ABAQUS has been implemented. For model validation, the results of the linear cutting machine tests (LCM) by Previous researchers have been applied. After solving the proposed model, the forces on the disc were calculated in three directions of the rock cutting model and the mean of each force was calculated by a code that developed in MATLAB software. Comparison of laboratory results and numerical modeling shows 11. 1 error Percentage for the mean normal force, 5. 6 error Percentage for the average rolling force, and 10 error Percentage for the average lateral force. By comparing the results of numerical modeling and linear cutting experiments, we can conclude that there is a good agreement between them. Introduction: In this study, a numerical model of linear rock cutting process based on finite element method using commercial code ABAQUS. To validate the proposed model, Rostami's (1997) linear rock cutting test on the Indiana limestone sample was used. Due to the unavailability of this rock sample, data from other texts were used to obtain input parameters to the model. A model assembly with a single disc cutter similar to laboratory test was simulated. By solving the proposed model, the forces applied to the cutter were calculated. Methodology and Approaches: In order to modeling linear rock cutting procedures, Commercial finite element code ABAQUS/CAE was employed and for validating that, laboratory linear rock cutting test by Rostami (1997) was considered. Rock and disc cutter models was built in ABAQUS GUI module and to simulate rock behavior of rock model, Strength criterion with linear equation of state was implemented to material model. Boundary Condition for disc cutter was similar to TBM’ s working status with linear velocity of 2 meter per seconds and angular velocity of 9. 3 radians per seconds. Results and Conclusions: Modeling shear forces showed a similar trend to the experimental results. On the other hand, the comparison of the cutting forces of the experimental test with the numerical model results showed 11. 1, 5. 6 and 10% differences for the normal, rolling and lateral forces, respectively. This discrepancy seems to be due to the complexity and nonlinearity of the rock-cutting problem and the impossibility of considering all the parameters governing to rock-cutting process with a natural disc cutter. However, further analysis is being done by modeling on other rock samples to confirm the results.

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APA: Copy

MOHAMMADI, REZA, SAMIMI NAMIN, FARHAD, & KHADEMI HAMIDI, JAFAR. (2019). Numerical analysis of disc cutter forces in linear rock cutting procedure using finite element method. JOURNAL OF ANALYTICAL AND NUMERICAL METHODS IN MINING ENGINEERING, 9(20 ), 53-66. SID. https://sid.ir/paper/266069/en

Vancouver: Copy

MOHAMMADI REZA, SAMIMI NAMIN FARHAD, KHADEMI HAMIDI JAFAR. Numerical analysis of disc cutter forces in linear rock cutting procedure using finite element method. JOURNAL OF ANALYTICAL AND NUMERICAL METHODS IN MINING ENGINEERING[Internet]. 2019;9(20 ):53-66. Available from: https://sid.ir/paper/266069/en

IEEE: Copy

REZA MOHAMMADI, FARHAD SAMIMI NAMIN, and JAFAR KHADEMI HAMIDI, “Numerical analysis of disc cutter forces in linear rock cutting procedure using finite element method,” JOURNAL OF ANALYTICAL AND NUMERICAL METHODS IN MINING ENGINEERING, vol. 9, no. 20 , pp. 53–66, 2019, [Online]. Available: https://sid.ir/paper/266069/en

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