Experimental study on mechanical properties of reed stalk

Tian, Kunpeng; Shen, Cheng; Zhang, B; Li, X W; Huang, Jicheng; Chen, Q M

doi:10.1088/1755-1315/346/1/012076

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…bamboo stalk [28], and reed stalk [29], providing the most concentrated measurement of the elastic modulus [30]. In this study, based on the standard "Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood" [31] and the relevant literature [32], tensile tests of the phloem and xylem of the ramie stalks were performed using a microcomputer-controlled electronic universal material testing machine (produced by Shanghai Tuofeng Instruments Co., Ltd., Shanghai, China), model TFW-508, with a 500 N transducer, and the accuracies of the force transducer as well as the displacement transducer were within ±0.1%.…”

Section: Elastic Modulus and Shear Modulusmentioning

confidence: 99%

Calibration of Ramie Stalk Contact Parameters Based on the Discrete Element Method

Wang

Duan

et al. 2023

Agriculture

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To obtain the physical parameters and contact parameters of ramie stalk decorticating simulation, the structural dimensions, density, moisture content, elastic modulus, and contact parameters of the ramie stalk were measured in this study based on the phloem and xylem of the ramie stalk. The physical stacking angles of the phloem and xylem were measured by the cylinder lift method and the extraction of the partition method, respectively. The contact parameters between the xylem and phloem of the ramie stalk were directly calibrated. Additionally, the contact parameters of the phloem–phloem, phloem–Q235A steel, xylem–xylem, and xylem–Q235A steel were used as calibration objects, and the simulated stacking angle was used as the evaluation index. Then, the Plackett–Burman test was designed to screen for the parameters which were significantly affecting the simulated stacking angle. Furthermore, the steepest ascent test determined the optimal range of values for two significant parameters of the phloem and three significant parameters of the xylem. Based on the central composite design, the second-order regression equations between the significant parameters of the phloem and xylem and the stacking angle were established, respectively. The physical stacking angles of 37.93° for phloem and 27.17° for xylem were the target values to obtain the optimal parameter group. The results showed that the restitution, static, and rolling friction coefficients between the xylem and phloem were 0.60, 0.53, and 0.021, respectively. The static and rolling friction coefficients between the phloem and phloem were 0.41 and 0.056, respectively. The rolling friction coefficient between the xylem and Q235A steel was 0.033, and the static and rolling friction coefficients between the xylem and xylem were 0.44 and 0.016, respectively. The verification test showed that the relative error values were less than 2.11%, which further indicated that the modeling method and parameter calibration of the ramie stalk phloem and xylem models were accurate and reliable. They can be used for the subsequent calibration simulation tests of ramie stalk bonding parameters and ramie stalk decorticating simulations.

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Section: Elastic Modulus and Shear Modulusmentioning

confidence: 99%

Calibration of Ramie Stalk Contact Parameters Based on the Discrete Element Method

Wang

Duan

et al. 2023

Agriculture

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“…In forestry and agriculture engineerings, various mechanical experiments were performed in order to improve production and handling equipments of crops (Amer Eissa et al 2008;Mou et al 2013;Zhang et al 2016;Aydin and Arslan 2018;Tian et al 2019), construct coastal forests against tsunamis (Nanko et al 2019), manage trees or assess forest stability protection (Lundstrom et al 2008;Özden and Ennos 2018). Compared with these works, the related studies on the eco-technological engineering for desertification control are limited.…”

Section: Introductionmentioning

confidence: 99%

Tensile properties of six desert shrub species in Hobq Desert, China

Liu

Ning

Wang

2022

Israel J. Plant Sci.

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Desert shrubs are often planted to control wind erosion, land desertification, and desert expansion. Their motions of bending and vibration can absorb and disperse kinetic energy of wind, so as to protect the erodible surfaces close-by. According to continuum mechanics, the quantification of mechanical properties of shrubs is critical to understand their dynamic behaviors. In this study, the conventional tensile tests of six dominant desert shrub species’ stems mainly sampled in the Hobq Desert of China are performed. It is found that the tensile strength of Tamarix ramosissima and Hedysarum scoparium are larger than others, whereas Caragana korshinskii and Hippophae rhamnoides are more flexible. And then, it is theoretically and experimentally proved that the tensile strength and Young’s modulus of these desert shrubs both decrease with the increase of diameter.

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Loading Model and Mechanical Properties of Mature Broccoli (Brassica oleracea L. Var. Italica Plenck) Stems at Harvest

2022

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Stem cutting is the main process of broccoli harvesting, and the structure and mechanical properties of the stem significantly affect the cutting efficiency. In the current research, the structural characteristics and component contents of the broccoli stem are analyzed. Through different processing methods of stretching, compressing and bending, the aim is to obtain the parameters for mechanical properties of broccoli stem, and to provide basic data and reference for establishing visual models of broccoli stem. The test results show: The content of rind is highest in the middle of the stem, the content of xylem is highest in the bottom of the stem, and the content of pith is highest in the top of the stem. The densities of rind, xylem and pith of broccoli stem were 1056.1, 938.9 and 1009.9 kg·m−3, respectively. The elastic modulus of the rind of broccoli stem was 27.2~47.5 MPa, the elastic modulus of the xylem was 19.2~110.7 MPa, and the elastic modulus of the pith was 6.5~7.5 MPa. The compressive elastic modulus of the stem was 1.3~2 MPa. The bending strength of the broccoli stem was 6.9 MPa, and the bending modulus was 3.1 MPa. The mechanical model of broccoli stem established in this study provides a theoretical basis for cutting and other processes.

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Experimental study on mechanical properties of reed stalk

Cited by 4 publications

References 1 publication

Calibration of Ramie Stalk Contact Parameters Based on the Discrete Element Method

Calibration of Ramie Stalk Contact Parameters Based on the Discrete Element Method

Tensile properties of six desert shrub species in Hobq Desert, China

Loading Model and Mechanical Properties of Mature Broccoli (Brassica oleracea L. Var. Italica Plenck) Stems at Harvest

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