Optimization of Material for Key Components and Parameters of Peanut Sheller Based on Hertz Theory and Box–Behnken Design

Wang, Jiannan; Xie, Hui; Hu, Zhichao; Liu, Minji; Peng, Jinyi; Ding, Qishuo; Peng, Baoliang; Ma, Chenbin

doi:10.3390/agriculture12020146

Cited by 10 publications

(6 citation statements)

References 23 publications

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“…The total pressure of the fan [ 19 ] can be obtained using Formula ( 11 ). where P q is the total pressure of the fan, Pa, which can be calculated using Formula ( 12 );…”

Section: Design Of Key Componentsmentioning

confidence: 99%

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Design and optimization of sheller for ginkgo nut: A study about multifunctional ginkgo nut sheller

Liu

Wang²,

Wang³

et al. 2022

PLoS ONE

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At present, ginkgo nut shellers have many problems, such as low shelling rate and high damage rate. To address these problems, a multifunctional ginkgo nut sheller was designed. The equipment had functions for shell breaking, shelling, and separation of shell from the kernel. The influencing factors of the shelling process were analyzed. A three-factor two-level response surface test was conducted, and mathematical models for the response surface were established. The influence of each factor on the operation quality was analyzed, and a combination of parameters was optimized. The experimental results showed that the factors in the order of importance of their influence on shelling rate was as follows: feeding rate, chainplate speed, and shelling gap. The factors in the order of importance of their influence on damage rate was as follows: shelling gap, chainplate speed, and feeding rate. The results of the interaction analysis conducted showed that the interaction between the chainplate speed and shelling gap had the highest significant effect on the shelling rate, followed by the interaction between the feeding rate and chainplate speed. The interaction between the chainplate speed and shelling gap had a significant effect on damage rate. The interaction between the other factors had no significant effect on shelling and damage rates. The optimal combination of parameters was as follows: the feeding rate was 30.2 g/s, the chainplate speed was 0.48 m/s, and the shelling gap was 12.3 mm. The optimal combination was employed, and the validation test resulted in a shelling rate of 98.02% and damage rate of 4.45%. The relative error between the measured and theoretical values was less than 5%, indicating that the models were reliable. This study can provide a reference for subsequent research on shelling equipment of ginkgo nut.

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“…The total pressure of the fan [ 19 ] can be obtained using Formula ( 11 ). where P q is the total pressure of the fan, Pa, which can be calculated using Formula ( 12 );…”

Section: Design Of Key Componentsmentioning

confidence: 99%

“…Response surface methodology (RSM) is an effective test method for optimizing process conditions. It is widely used in experimental studies of other types of shellers [ 19 , 20 ]. RSM is also often used when it is costly and time-consuming to collect experimental data from expensive simulation models [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of sheller for ginkgo nut: A study about multifunctional ginkgo nut sheller

Liu

Wang²,

Wang³

et al. 2022

PLoS ONE

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“…The final simulation time is set to 10 ms, output contact forces, directional deformation, mass energy, etc. 10 The analysis shows that the contact force of the peanut pod and the rotation speed of the fruit picking roller is approximately linearly related [28][29][30]. The above condition leads to the following results.…”

Section: Peanut Picking Force Simulation Modelling 231 Analysis Of Pe...mentioning

confidence: 99%

“…It increases contact forces as speed increases. The change rule is shown in Figure10The analysis shows that the contact force of the peanut pod and the rotation speed of the fruit picking roller is approximately linearly related[28][29][30].…”

mentioning

confidence: 99%

Experiments and Analysis of a Peanut Semi-Feeding Picking Mechanism Based on the JKR Model

Shang

et al. 2022

Agriculture

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When peanuts are harvested, the high rate of pod crush and pods leakage are the main problems in the current peanut fruit picking process. Optimized peanut picking rollers help to improve peanut harvesting efficiency. This paper investigates the fruit picking system of a three-monopoly, six-row semi-feeding peanut combine harvester, in order to reduce the rate of crush and leakage of peanut pods during the picking process. Firstly, this article specifies the structure and basic parameters of peanut picking pairs of rollers. Secondly, this paper combines JKR (Johnson-Kendall-Roberts) model theory, crash model simulation analysis, a field test, and other methods. Motion and force analysis are presented in detail for the peanut picking mechanism and associated harvesting components. The optimum clamping chain speed, the angle of installation of the picking rollers to the clamping chain, and the picking rollers’ speed are determined. A three-factor, three-level regression orthogonal combination test was designed to obtain regression models for pod crushed and pods leakage rate. The regression model’s response surface analysis concluded that when the clamping chain speed is 0.84–1.2 m/s, the fruit picking roller angle is 10°–11.2° and the fruit picking roller speed is 442 r/min–500 r/min. It is the optimal working parameter for the three-monopoly six-row peanut combine harvester. At this point, the peanut harvesting requirements are met, and the overall performance is significantly improved. This paper lays the foundation for the development of the semi-feeding peanut picking system.

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“…For all kinds of nuts, the first stage is cracking, or shelling, or hulling, i.e., removing the shell to obtain the undamaged kernel [20][21][22]. This primary processing stage is usually carried out at small harvesting enterprises, which value the economic efficiency and are eager to lower the technological and transport costs while maintaining the maximal productivity and flexibility [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Low Temperatures on the Brittle Fracture of Hazelnut Shell

Neverov¹,

Plotnikov²,

Korotkiy³

et al. 2023

IJDNE

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Kernels are widely used in the food industry because of their high nutritional value. The nutshell obtained by hulling is used as an absorbent. Currently, hulling is carried out without pre-treatment of the shell. However, lowering the temperature allows for reducing the material's strength. When the temperature of cold brittleness is reached, the shell's strength characteristics are reduced, which decreases the cost of breaking. To determine the tensile strength of hazelnut shells at various temperatures, the authors used the method of compressive testing. Compressive testing of materials was carried out using a PM-MG4 universal hydraulic testing machine. An Evercam 1000-8-M highspeed camera was used to determine the deformation amount. To reveal the material's propensity to brittle fracture, the samples were subjected to dynamic loading on a special installation -a pendulum-type copra. Determining the temperature of cold brittleness allowed for designing highly efficient methods of hulling and its instrumentation. The article presents methods for studying the shell's strength characteristics at various temperatures in the range from 25 to -190℃. The results for compressive strength and impact strength of the shell at different temperatures were given. The range of cold brittleness of the shell was determined. The experimental results showed that a decrease in the temperature of the shell led to a transition from mixed to brittle character of the shell's destruction at a temperature range of -40...-80℃. Lowering the shell's temperature reduced its tensile strength by an average of 25-30%, depending on the size of the nut. The obtained results can be used in the development of new methods and technologies based on them for hulling hazelnuts. The values of the shell's tensile strength can be used in the design and calculation of equipment for breaking.

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Optimization of Material for Key Components and Parameters of Peanut Sheller Based on Hertz Theory and Box–Behnken Design

Cited by 10 publications

References 23 publications

Design and optimization of sheller for ginkgo nut: A study about multifunctional ginkgo nut sheller

Design and optimization of sheller for ginkgo nut: A study about multifunctional ginkgo nut sheller

Experiments and Analysis of a Peanut Semi-Feeding Picking Mechanism Based on the JKR Model

Effect of Low Temperatures on the Brittle Fracture of Hazelnut Shell

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