Discrete Element Simulation Study of the Accumulation Characteristics for Rice Seeds with Different Moisture Content

Wang, Jinwu; Xu, Changsu; X, Qi; Zhou, Weijian; Tang, Han

doi:10.3390/foods11030295

Cited by 3 publications

(2 citation statements)

References 38 publications

(32 reference statements)

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“…The same phenomenon could also be observed where the values of θ increased with moisture contents. The same phenomenon was also reported by other researchers (Dauda et al, 2019;Inekwe, 2019;Jan et al, 2019;Larsson, 2019;Mohite et al, 2019;Etim et al, 2021;Kopeć-Jarosz & Wójcik, 2021;Wang et al, 2022;Zhang et al, 2022). As can be observed, all the linear regression lines of the grains showed positive increments but differed in steepness, indicating that θ of the tested grains increased with moisture content.…”

Section: Wall Friction Angle (θ)supporting

confidence: 88%

“…The effect of moisture content on the physical and mechanical properties of the grain is an important factor to be evaluated in determining machine design and storage facility (Jan et al, 2019). A similar statement is also conveyed by many other researchers (Dawange & Jha, 2019;Inekwe, 2019;Sadiku & Omogunsoye, 2021;Hasmadi, 2021;Wang et al, 2022). Therefore, it is necessary to find the relationship between φ and θ of the grains with their moisture contents.…”

Section: Introductionmentioning

confidence: 80%

See 1 more Smart Citation

Effect of Moisture Content on Frictional Properties of Some Selected Grains in Indonesia

Bintoro¹,

Zahra²,

Khansa³

et al. 2023

JST

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The frictional property of grains is one of the most important engineering parameters in developing solid bulk handling of grains. It is necessary for designing agricultural facilities and production process activities. These properties are expressed as internal friction angle (φ) and wall friction angle (θ), which are known to be affected by the moisture content of the grains. This research investigates the effect of moisture content on the values of φ and θ of some selected grains. In the research, some indigenous Indonesian grain types, including rough rice, white rice, corn, soybean, and coffee, each in three varieties and three level of moisture contents, were used as the research samples. Those angles were measured using a self-constructed direct shear cell apparatus. Three different normal loads for each grain type were used with three replications. It is concluded that φ and θ of the tested grains increase with moisture contents with different trends of increments. The relationship of those angles with moisture contents can be expressed as linear regression equations. The slope of the regression lines for both φ and θ is significantly affected by grain type (p<0.05). For φ, coffee (Excelsa) is the most susceptible to the change in moisture content, while dent corn (Hibrida) is the least affected one. For θ, soybean (Galunggung) is the most susceptible to the change in moisture content, while rough rice (Mapan 5) is the least affected one.

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Section: Wall Friction Angle (θ)supporting

confidence: 88%

Section: Introductionmentioning

confidence: 80%

Effect of Moisture Content on Frictional Properties of Some Selected Grains in Indonesia

Bintoro¹,

Zahra²,

Khansa³

et al. 2023

JST

View full text Add to dashboard Cite

show abstract

Calibration of contact parameters for complex shaped fruits based on discrete element method: The case of pod pepper (Capsicum annuum)

Du¹,

Han²,

Song³

et al. 2023

Biosystems Engineering

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Determination of Characteristics and Establishment of Discrete Element Model for Whole Rice Plant

Tang

et al. 2023

Agronomy

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In order to accurately establish a discrete element model for the whole plant flexibility of upright rice during the harvesting period, several physical characteristics, such as geometric features, moisture content, and density, of the entire rice plant were measured, along with frictional properties, such as the static and rolling friction coefficients, and mechanical properties, including the elastic modulus and restitution coefficient. A flexible and upright discrete element model of the rice plant was established using the DEM method based on the Hertz–Mindlin (no slip) and Hertz–Mindlin with bonding mechanical models. The parameters were optimized through Plackett–Burman screening experiments, steepest ascent experiments, and Box–Behnken optimization experiments to accurately determine the discrete element model parameters of each component of the rice plant. The calibration process of the contact parameters between rice grains and steel was analyzed in detail as an example, resulting in a calibration error of 0.68% for the natural repose angle. Taking the calibration of the contact parameters between the main stem and steel as an example, a detailed analysis of the calibration process was conducted. The calibration resulted in a calibration error of 2.76% for the natural repose angle and 2.33% for deflection. This study lays the foundation for understanding the mechanical response of rice and machinery when they are coupled together. Additionally, it provides valuable references for establishing discrete element models of plant species other than rice.

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Discrete Element Simulation Study of the Accumulation Characteristics for Rice Seeds with Different Moisture Content

Cited by 3 publications

References 38 publications

Effect of Moisture Content on Frictional Properties of Some Selected Grains in Indonesia

Effect of Moisture Content on Frictional Properties of Some Selected Grains in Indonesia

Calibration of contact parameters for complex shaped fruits based on discrete element method: The case of pod pepper (Capsicum annuum)

Determination of Characteristics and Establishment of Discrete Element Model for Whole Rice Plant

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