Simulation Analysis and Experimental Study on Strength of Castor Cutting Cutter

Hou, Jiafa; Yao, Enchao; Zheng, Zhuoyun; Yang, Yong; Bai, Jingbo

doi:10.1088/1757-899x/452/2/022086

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…Based on the establishment of the constitutive relations of the physical models of wood and sugarcane,the ramie stalk is abstracted as a composite material composed of bast fiber and xylem, and its performance is homogeneous, linear elastic. The parameters in the constitutive relation are determined by bending tests and consulting data [8][9][10]20 . Based on the assumptions of ramie geometry, ramie has…”

Section: Calibration Of Bending Mechanics Model Parameters For Ramiementioning

confidence: 99%

“…Wang et al 8 calibrated the cutting finite element model of wild chrysanthemum stalks during harvest, screened the significantly influential test factors by P-B tests, obtained the optimal parameters by central combination design, and conducted cutting force simulations to verify the accuracy of the parameters. Hou et al 9 studied the bending mechanical properties of different varieties of castor stalks at various levels of factors, the effect of fiber duct content on the flexural strength of stalk was studied by establishing a finite element model. Xue et al 10 used ANSYS to study the bending deformation and stress distribution of cassava hemp stalks under ultimate load.…”

Section: Introductionmentioning

confidence: 99%

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Bending mechanics test and parameters calibration of ramie stalks

Zhang

Huang

et al. 2023

Sci Rep

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Research and development of ramie harvesting equipment is a key link to revitalize ramie industry, problems such as the tendency of stalks to tangle and clog the machine are very problematic, seriously affect the quality and fluency of the harvester. The structure of ramie stalk is complex, and the mechanical properties of each component vary greatly, collision between stalk and machine creates complex stress relationship. By building a finite element model, it is possible to analyze the stress state of the stalk during bending from a microscopic perspective, and to analyze the complex stress–strain situation within the stalk. The purpose of this paper is to establish a standard ramie stalk bending finite element model to provide a theoretical basis for the subsequent kinematics and dynamics. Firstly, material experiments were carried out on ramie straw. The structural and mechanical parameters of the straw components were obtained through measurement and calculation tests, and the force–deformation curves for straw bending were obtained. Bending finite element simulations were carried out on the basis of mechanical tests, and the parameters such as dynamic friction coefficient, wood Poisson's ratio and bast Poisson's ratio were determined by the central combination design. Then established an accurate bending finite element simulation model of ramie stalk, the accuracy of the model was verified at the end. In this paper, the key parameters of the ramie stalk model were calibrated through a combination of material tests and simulations. All parameters of the ramie stalk model were finally obtained, and the bending mechanical properties of the ramie stalk were analysed by applying finite element analysis. This bending mechanics simulation model can be used for kinematic and dynamics simulation analysis of conveying and baling to provide a theoretical basis for the structural design of the harvester. The methods explored here can be applied to other slender straw crops.

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Section: Calibration Of Bending Mechanics Model Parameters For Ramiementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bending mechanics test and parameters calibration of ramie stalks

Zhang

Huang

et al. 2023

Sci Rep

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“…The mechanical parameters of the stems provide a reference for the mechanized production of crops [4]; plant stems have a complex structure and are capable of resisting various types of loads [5], and test methods are used to obtain the parameters include compression [6], shearing [7], bending [8], and tensile [9] tests. The mechanical strength of the stem is affected by factors such as stem size, moisture content, internode position, and loading rate, each to varying extents [10][11][12][13][14][15]. The morphology and mechanical characteristics of the stems vary among different crops [16].…”

Section: Introductionmentioning

confidence: 99%

Study on the Shear and Bending Mechanical Properties of Millet Stem

Wang,

Pan

et al. 2024

Agriculture

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To determine the patterns and influencing factors of the mechanical properties of millet stems from different varieties during the maturity period, this study employed a complete block experiment method and conducted shearing and bending tests on millet stems using the INSTRON5544 electronic universal material testing machine. The research investigated the variation in the shear strength, specific shear energy, bending strength, elastic modulus, and bending stiffness at different internode positions of the stems of Changza 466, Zhangza 16, and Jingu 21 during their maturity period. The results indicated that the variety had a significant impact on the mechanical properties of millet stems: from largest to smallest, the order of shear and bending forces was Jingu 21, Zhangza 16, and Changza 466. The shear strength and bending strength of Jingu 21 were the greatest among the three stem samples. The internode position significantly affected the shear mechanical properties of the millet stems, showing a general trend of decreasing shear strength with ascending internode position. The effect of the internode position on the bending stiffness was highly significant, whereas its impact on the bending strength and elastic modulus was not significant. The shear strength of the millet stems ranged from 3.866 ± 1.086 to 6.953 ± 2.208 MPa, significantly lower than the bending strength, which ranged from 18.934 ± 4.374 to 34.286 ± 6.875 MPa. The lowest shear strength and specific shearing energy, recorded at the fifth internode, were 4.028 ± 1.918 MPa and 15.097 ± 12.633 MJ/mm2, respectively. Jingu 21 and Changza 466 exhibit better lodging resistance than Zhangza 16. It is recommended to use a cutting-type platform for harvesting millet stems, with the cutting height set at the fifth internode position. This study provides a theoretical basis for the design of millet harvesting machinery and the selection of harvest parameters.

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Simulation Analysis and Experimental Study on Strength of Castor Cutting Cutter

Cited by 2 publications

References 2 publications

Bending mechanics test and parameters calibration of ramie stalks

Bending mechanics test and parameters calibration of ramie stalks

Study on the Shear and Bending Mechanical Properties of Millet Stem

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