The elastoplastic flexural behaviour of corn stalks

Xia, Yidong; Klinger, Jordan; Bhattacharjee, Tiasha; Thompson, Vicki S.

doi:10.1016/j.biosystemseng.2022.02.016

Cited by 17 publications

(3 citation statements)

References 19 publications

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“…Te determination of grain bending mechanical properties can be used to characterize the ability of grain to resist bending loads during production and processing. Te commonly used experimental method of bending mechanical properties is the three-point bending test, which can be used to test the bending strength, fracture energy, and other indicators of materials [47]. At the beginning of the experiment, the material was placed on two fulcrums at a certain distance, and a downward load was applied from the center above the material.…”

Section: Bending Mechanical Propertiesmentioning

confidence: 99%

Determination Methods and Influencing Factors of Grain Mechanical Properties

Gao,

Tian,

Xue

et al. 2024

Journal of Food Quality

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Grain is extremely vulnerable to external loads during production and processing, resulting in the deterioration of grain quality. Deteriorated grain not only affects the economic value of grain but also affects the safety of storage. This has a very important relationship with the biomechanical properties of grains. It is of great significance to explore the mechanical properties of grain under different conditions and analyze the relationship between its physical and chemical properties and mechanical properties for improving its processing and eating quality. In this paper, the research methods of the mechanical properties of grains are reviewed. Various factors influencing the mechanical properties of cereals were analyzed. The relationship between the internal organizational structure of grain and its mechanical properties was discussed. This paper puts forward the shortcomings in the current research on the mechanical properties of grains and puts forward the prospect and analysis of its importance in future development in order to provide a reference for reducing crushing in the grain processing process.

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Section: Bending Mechanical Propertiesmentioning

confidence: 99%

Determination Methods and Influencing Factors of Grain Mechanical Properties

Gao,

Tian,

Xue

et al. 2024

Journal of Food Quality

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“…The macroscopic and microscopic morphology of the raw corn straw in a vertical section and a cross section are shown in Figure 1. Although both of them exhibited porous structures with pore sizes of approximately 100 µm, the cross-sectional morphology appeared more like a 'honeycomb', and there were many filamentous fibers perpendicular to the cross section of the straw, which enhanced the strength of the straw leading to the high strength and plastic properties [39]. Additionally, it was found that there were abundant pores with a pore size of about 30-40 µm stacked layer by layer inside the fiber in the vertical section, and most of them were rectangular without showing a honeycomblike structure.…”

Section: Morphological Characterizationmentioning

confidence: 99%

Preparation of Bio-Foam Material from Steam-Exploded Corn Straw by In Situ Esterification Modification

Pan,

Zhou,

et al. 2023

Polymers

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In this work, we engineered a corn-straw-based bio-foam material under the inspiration of the intrinsic morphology of the corn stem. The explosion pretreatment was applied to obtain a fibrillated cellulose starting material rich in lignin. The in situ esterification of cellulose was adopted to improve the cross-linking network of the as-developed foam bio-material. The esterification of lignin was observed in the same procedure, which provides a better cross-linking interaction. The esterified corn-straw-derived bio-foam material showed excellent elastic resilience performance with an elastic recovery ratio of 83% and an elastic modulus of 20 kPa. Meanwhile, with surface modification by hexachlorocyclotriphosphazene-functionalized lignin as the flame retardant (Lig-HCCP), the as-obtained bio-foam material demonstrated quite a good flame retardancy (with 27.3% of the LOI), as well as a heat insulation property. The corn-straw-derived bio-foam material is prospected to be a potential substitution packaging material for widely used petroleum-derived products. This work provides a new value-added application of the abundant agricultural straw biomass resources.

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“…The cutting process of stalks is closely related to their biological characteristics, physical properties, and cutting component structure, directly affecting their cutting mechanical properties [4]. Scholars have studied the cutting characteristics of stalks in crops such as corn [5][6][7][8], sunflowers [9,10], cotton [11], rice [12], and citrus [13]. The main research focuses on experimental factors such as moisture content, stalk cutting position, and cutting angle to determine the optimal cutting form, thereby reducing cutting energy consumption and cutting stress [14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Cutting Characteristics of King Grass Stalk under Different Physical Properties and Mechanical Parameters

Huan,

Pang,

et al. 2024

Preprint

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To guide the design and optimization of King Grass (KG) harvesting machinery, this paper studied the cutting characteristics of KG stalks under different physical properties and mechanical parameters. A cutting device that can achieve different parameter adjustments was designed, and indoor cutting experiments were conducted. The results of the single factor experiment show that with the increase of moisture content and stalk height, the ultimate shear stress (USS) and unit-area cutting energy consumption (UCEC) gradually decrease. The optimal range of blade clearance for cutting KG stalks is 2.0-4.0 mm. The optimal value range for oblique cutting angle is 10 ° -40 °. The reasonable range of skew cutting angle is 10 °-20 °. The optimal range for sliding cutting angle is 20 ° - 40 °. The response surface methodology was used to conduct parameter optimization experiments. The regression models were established for various factors and the USS, as well as the UCEC. The optimal combination of cutting parameters has been determined. Under this parameter setting, the USS is 0.4 MPa and UCEC is 3.5 mJ/mm2. The average relative errors between the predicted and experimental values of USS and UCEC were 6.34% and 4.71%, respectively. This indicates that the model can correct reflect the mathematical relationship between various factors and USS and UCEC. This study provides theoretical support for the design of KG harvesting machinery.

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The elastoplastic flexural behaviour of corn stalks

Cited by 17 publications

References 19 publications

Determination Methods and Influencing Factors of Grain Mechanical Properties

Determination Methods and Influencing Factors of Grain Mechanical Properties

Preparation of Bio-Foam Material from Steam-Exploded Corn Straw by In Situ Esterification Modification

Experimental Study on the Cutting Characteristics of King Grass Stalk under Different Physical Properties and Mechanical Parameters

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