The Influences of the Stem Structure and Elastic Modulus on Wheat lodging

Yuan, Zhi Hua; Zhang, Xiu Li; Xu, Gui Zhuan

doi:10.4028/www.scientific.net/amr.524-527.2330

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Du et al (2018) established a stress relaxation model for sweet sorghum straw with different moisture content, compression density, length of chopped segment, and compression speed, and analyzed the relationship between the four factors. Waananen and Okos (1992), Chen et al (2019), Li et al (2013), Shi et al (2017), Yuan et al (2012), Sheng et al (2014), Wang et al (2021), Abedi andTakhar (2022), andXiao et al (2020), respectively analyzed corn kernels, barley straw, industrial hemp fiber, wormwood straw, wheat stalks, corn kernels, machineharvested seed cotton, banana, and rice seedlings. Caicedo et al (2021) established a viscoelastic plastic model for the compressive properties of sugarcane residues.…”

Section: Introductionmentioning

confidence: 99%

Stress relaxation characteristics of crushed cane tail straw

Lei

Wang

et al. 2022

BioRes

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To gain insight into the mechanical properties of crushed sugarcane tail leaves during stress relaxation, a self-made compression equipment was used in this study. The variation law of different factors on the stress relaxation process of crushed cane tail was explored and a stress relaxation model was established. The three-element and five-element generalized Maxwell models were selected to fit the regression analysis of the stress relaxation curve of the crushed cane tail. The comparison showed that the determination coefficient R2 of the five-element stress relaxation model was higher, and a three-factor and three-level response surface test was designed. Following the quadratic regression polynomial of the stress rapid decay time and the equilibrium elastic modulus, the final optimization results obtained are as follows: The moisture content was 60.8%, the crushing particle size was 45 mm, the feeding amount was 150 g, and the stress rapid decay time was 14.0 s. The equilibrium elastic modulus was 129 kPa.

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Section: Introductionmentioning

confidence: 99%

Stress relaxation characteristics of crushed cane tail straw

Lei

Wang

et al. 2022

BioRes

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“…However, a low elastic modulus will reduce the ability of sugarcane to resist external forces during the growth process, thereby making the sugarcane more prone to lodging (Yuan et al, 2012), and reducing the sugar yield of sugarcane, and also increasing the difficulty of the mechanized harvesting process Therefore, it is absolutely vital to choose the right variety of sugarcane.…”

Section: Discussionmentioning

confidence: 99%

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Li¹,

Li²,

Lin³

et al. 2023

Int. Agrophys.

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The mechanization of the whole process of sugarcane harvesting is an integral part of reducing the cost of sugarcane production. In order to select sugarcane strains suitable for mechanized harvesting, in this experiment, a dynamic resistance strain gauge and other equipment determined the related mechanical property parameters such as density, elastic modulus, and Poisson's ratio of different sugarcane varieties. Ansys/ explicit dynamics were used to establish a finite element model of the disc cutting device and to simulate the forces exerted on the stalk during sugarcane harvesting and also the quality of the cut section. Then, after obtaining the regression equation analysis and the response surface through the cross-section mass, the field harvesting experiment verifies the simulation results. The results show that the density, elastic modulus, and Poisson's ratio significantly affect the cutting quality within the three types of mechanical parameters. Through response surface analysis, when the elastic modulus is 92 MPa, the density is 1145 kg m -3 , the Poisson's ratio is 0.404, the best cutting quality was obtained, and the section flatness is 57.09%. According to the cross-sectional regression equation, the calculation results are as follows: Liucheng 05-136 > Yuetang 94-128 > Guitang 42, which is the same as the actual harvest quality results under the two planting modes. This indicated that the difference in the mechanical properties of the sugarcane would significantly affect the quality of mechanical harvesting, which provides a reference direction for selecting sugarcane varieties suitable for mechanized harvesting.K e y w o r d s: elastic modulus, Poisson's ratio, mechanized harvesting, finite element

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Mechanical Properties of Hulless Barley Stem with Different Moisture Contents

Chen

Zou

et al. 2019

International Journal of Food Engineering

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Mechanical properties of hulless barley stems with different moisture contents (10.23%–43.14%) were investigated by using temperature sweep, frequency sweep, stress relaxation and creep tests of dynamic mechanical analyzer (DMA) in this study. Results showed a significant dependence of storage modulus, loss modulus and tan delta on moisture content. The data from stress relaxation and creep was fitted by using generalized Maxwell model and Burgers model. 5-element Maxwell model was better for describing relaxation behaviors of hulless barely stem compared with the 3-element Maxwell model. The peak values of loss modulus and tan delta both occurred at a low temperature when moisture content increased. The dynamic mechanical properties can provide useful information for the harvesting and processing of huless barely stem.

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The Influences of the Stem Structure and Elastic Modulus on Wheat lodging

Cited by 3 publications

References 2 publications

Stress relaxation characteristics of crushed cane tail straw

Stress relaxation characteristics of crushed cane tail straw

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Mechanical Properties of Hulless Barley Stem with Different Moisture Contents

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