Study the effect of tool geometry and operational conditions on mouldboard plough forces and energy requirement: Part 1. Finite element simulation

Ibrahmi, Ayadi; Bentaher, Hatem; Hbaieb, Moncef; Maalej, Aref; Mouazen, Abdul Mounem

doi:10.1016/j.compag.2015.08.006

Cited by 50 publications

(18 citation statements)

References 33 publications

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“…Many scholars have done a lot of detailed research on the analysis of the force between the soil and the cutter head during the cutting process of the shield machine cutter head [6][7][8][9][10][11][12] . The cutter heat at 1/6 blocked rotation has been taken as an example.…”

Section: Force Analysis Of Soil and Cutter Headmentioning

confidence: 99%

Mechanical analysis of shield machine cutter head under multiple working conditions based on elastoplastic model

Min

Qin

2022

J. Phys.: Conf. Ser.

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The shield machine’s ability to simultaneously cut soft soil and hard rock makes it widely used in subway tunnels, diversion tunnels and other underground engineering constructions. As the core component of the composite shield machine, the shield cutter head has a decisive effect on the work efficiency of the shield machine. When the cutter head of the shield machine is working, the positive pressure of the cutter head directly affects the working performance of the shield machine. However, when the shield machine is working, the positive pressure of its cutter head has been influenced by many factors. Therefore, the problems of evaluating positive pressure of shield machine cutter head and optimizing structure of machine cutter heat are needed. In this study, the force balance equation has been used to derive the calculation formula of the positive pressure of the soil on the cutter head. This formula can analyze the positive pressure value of the cutter head under various working conditions under different friction coefficients. At the same time, this research uses Hypermesh software to integrate the cutter head body and the force transmission ring, and uses ANSYS statics simulation analysis method to perform mechanical calculations on the shield machine cutter head. The analysis of the cutter head is 1/6, 1/3, and 1/2 effect of soil on the cutter head when the rotor is locked, and the overall stress distribution of the cutter head is analyzed to optimize the structure design of the cutter head.

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Section: Force Analysis Of Soil and Cutter Headmentioning

confidence: 99%

Mechanical analysis of shield machine cutter head under multiple working conditions based on elastoplastic model

Min

Qin

2022

J. Phys.: Conf. Ser.

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“…Various studies using classical theoretical formulas or tillage force measurement systems have been conducted to study the perspective of tillage implement-dependent loads, which means the design parameters and operating conditions of the attached implement. In some studies, soil bin experiments were conducted to evaluate the design parameters (e.g., tine spacing, rake angle, tillage width, surface treatment) and operation conditions (e.g., tillage depth, gang angle) of the tillage implement on tillage force and working performance [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. In another study, an experimental study was conducted to develop a specific draft estimation model for offset disc harrows in a soil bin test environment [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Kim

Lee

Baek

et al. 2022

Sensors

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The purpose of this study was to analyze the tillage depth effect on the tractor-moldboard plow systems in various soil environments and tillage depths using a field load measurement system. A field load measurement system can measure the engine load, draft force, travel speed, wheel axle load, and tillage depth in real-time. In addition, measurement tests of soil properties in the soil layer were preceded to analyze the effect of field environments. The presented results show that moldboard plow at the same tillage depth had a wide range of influences on the tractor’s working load and performance under various environments. As the draft force due to soil–tool interaction occurred in the range of 5.6–17.7 kN depending on the field environment, the overall mean engine torque and rear axle torque were up to 2.14 times and 1.67 times higher in hard and clayey soil, respectively, than in soft soil environments. In addition, the results showed tractive efficiency of 0.56–0.73 and were analyzed to have a lugging ability of 67.8% with a 44% maximum torque rise. The engine power requirement in hardpan was similar within 3.6–9.6%, but the power demand of the rear axle differed by up to 18.4%.

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“…Fielke [10] predicted the influence of cutting edges with different geometric shapes on tillage force via FEM. Ibrahmi et al [11] studied the influence of the cutting depth, cutting speed, and cutting angle on the tillage force of a template plow used in North Africa. The results showed that vertical force decreased linearly with an increase in the cutting angle.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Model Construction and Cutting Parameter Calibration of Wild Chrysanthemum Stem

et al. 2022

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Due to a lack of an accurate model in finite element simulation of mechanized harvesting of wild chrysanthemum, the stem of wild chrysanthemum in the harvesting period is taken as the research object. ANSYS Workbench 19.0 software and LS-DYNA software (LS-PrePOST-4.3-X64) are used to calibrate the finite element simulation model of wild chrysanthemum stem cutting. The stem diameter distribution at the cutting height of the chrysanthemum is obtained. The maximum shear forces at different diameters (7 mm, 8 mm, 9 mm, 10 mm, and 11 mm) within the cutting range are determined as 120.0 N, 159.2 N, 213.8 N, 300.0 N, and 378.2 N, respectively, by using a biomechanical testing machine and a custom-made shear blade. The Plastic_Kinematic failure model is used to simulate the cutting process by the finite element method. The Plackett–Burman test is employed to screen out the test factors that significantly affect the results, namely, the yield stress, failure strain, and strain rate parameter C. The regression model between the shear force and significant parameters is obtained by central composite design experiments. To obtain the model parameters, the measured values are substituted into the regression equation as the simulation target values. In other words, the yield stress is 17.96 MPa, the strain rate parameter C is 87.27, and the failure strain is 0.0387. The maximum shear force simulation test is carried out with the determined parameters. The results showed that the maximum error between the simulated and the actual value of the maximum shear force of wild chrysanthemum stems with different diameters is 7.8%. This indicates that the calibrated parameters of the relevant stem failure model can be used in the finite element method simulation and provide a basis for subsequent simulations.

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Study the effect of tool geometry and operational conditions on mouldboard plough forces and energy requirement: Part 1. Finite element simulation

Cited by 50 publications

References 33 publications

Mechanical analysis of shield machine cutter head under multiple working conditions based on elastoplastic model

Mechanical analysis of shield machine cutter head under multiple working conditions based on elastoplastic model

Analysis of the Effect of Tillage Depth on the Working Performance of Tractor-Moldboard Plow System under Various Field Environments

Finite Element Model Construction and Cutting Parameter Calibration of Wild Chrysanthemum Stem

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