Biosystems Engineering最新文献_第4页

Dynamic behaviour of a large flexible net with local biofouling subjected to irregular waves 具有局部生物污垢的大型柔性网在不规则波浪作用下的动力特性

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-09 DOI: 10.1016/j.biosystemseng.2025.104138

Wude Xie , Zhaoyang Jiang , Yujiao Zheng , Zhenlin Liang

{"title":"Dynamic behaviour of a large flexible net with local biofouling subjected to irregular waves","authors":"Wude Xie , Zhaoyang Jiang , Yujiao Zheng , Zhenlin Liang","doi":"10.1016/j.biosystemseng.2025.104138","DOIUrl":"10.1016/j.biosystemseng.2025.104138","url":null,"abstract":"<div><div>In deep-sea aquaculture facilities, flexible nets are widely used and are easily colonized by marine organisms. Once fouled by these organisms, the flexible nets experience increased weight and greater hydrodynamic forces due to waves and currents. This paper presents a theoretical model developed to simulate the three-dimensional vibrations of a large-area flexible net subjected to irregular waves, considering three different types of local biofouling. The marine organisms are modelled as adhering to the net near the boundaries, on a rectangular ring, and within the central rectangular region, respectively. The irregular waves are described using the Jonswap spectrum. Employing the lumped-mass method, the nonlinear vibrations of the net are solved. The theoretical model is validated by comparing it with experimental results. Using the present model, the effects of different types of biofoulings on the vibrations of a flexible net under the action of irregular waves are examined. The results indicate that the distribution of dynamic tensions of net twines on the whole net is different for different regions and as the extent of biofouling increases, the dynamic tensions of net twines also increase.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"254 ","pages":"Article 104138"},"PeriodicalIF":4.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and testing of the vibrating type cell-belt precision seed metering device for super hybrid rice 超级杂交稻振动式细胞带精密排种装置的设计与试验

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-05 DOI: 10.1016/j.biosystemseng.2025.104136

Chengtian Zhu, Cailing Liu, Shuaihua Hao, Yuewei Wang, Jitong Xu, Yalong Li

{"title":"Design and testing of the vibrating type cell-belt precision seed metering device for super hybrid rice","authors":"Chengtian Zhu, Cailing Liu, Shuaihua Hao, Yuewei Wang, Jitong Xu, Yalong Li","doi":"10.1016/j.biosystemseng.2025.104136","DOIUrl":"10.1016/j.biosystemseng.2025.104136","url":null,"abstract":"<div><div>In order to meet the requirements of low volume and high precision in the seeding process of super hybrid rice, a vibrating type cell-belt precision seed metering device was designed. To optimise the seed filling performance, a vibration plate with grid was integrated into the seed box. The structural parameters of the vibration plate were designed according to the dimensions of the cell and seed. Mechanical and kinematic theoretical analyses of the seed filling process were conducted. Single factor analysis was employed and the structural parameters of the seed metering device were determined. The inclination angle of the cell-belt was 43°, and the vibration plate was installed where the difference in elevation between the lower end of the vibration plate and the bottom of the seed box was 0 mm. A Box-Behnken test was conducted to establish quadratic regression models between the factors, which included the working speed of the cell-belt, amplitude and frequency of the vibration plate, and the test indicators, which included qualified rate, multiple rate and leakage rate, then the significance analysis was carried out. The results of the multi-objective optimisation indicated that the seed filling performance was optimised when the working speed of the cell-belt was 0.088 m·s<sup>−</sup><sup>1</sup>, the amplitude and frequency of the vibration plate were 1.056 mm and 10.278 Hz, respectively. The qualified rate, multiple rate, and leakage rate were experimentally validated at 95.27 %, 3.92 %, and 0.81 %, which is in accordance with the requirements of super hybrid rice precision seeding.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling soil water and its uniformity under linear-move sprinkler irrigation 线性移动喷灌条件下土壤水分及其均匀性的模拟

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-04 DOI: 10.1016/j.biosystemseng.2025.104140

Rui Zhang , Xin Qiao , Delan Zhu , Pute Wu , Xiaomin Zhang

{"title":"Modelling soil water and its uniformity under linear-move sprinkler irrigation","authors":"Rui Zhang , Xin Qiao , Delan Zhu , Pute Wu , Xiaomin Zhang","doi":"10.1016/j.biosystemseng.2025.104140","DOIUrl":"10.1016/j.biosystemseng.2025.104140","url":null,"abstract":"<div><div>Crop yield is strongly affected by soil water distribution near the root zone. The redistribution of soil water in sprinkler irrigation results in higher soil water uniformity (<em>CU</em><sub><em>s</em></sub>) than irrigation uniformity (<em>CU</em><sub><em>i</em></sub>). A soil water transport model for sprinkler irrigation based on the COMSOL-2D model has been constructed and validated to investigate soil water movement and redistribution. Furthermore, the relationships between <em>CU</em><sub><em>s</em></sub>, soil hydraulic parameters, and sprinkler irrigation parameters has been analysed. The results showed that 1) the residual distributions of the vertical wetting front (<em>VWF</em>) and soil water content (<em>SWC</em>) were in the ranges of −0.04–0.05 and −0.09–0.10, respectively, with mean values close to 0 and <em>R</em><sup>2</sup> greater than 0.85, indicating that model predictions were reliable; 2) the lower <em>CU</em><sub><em>i</em></sub> was, the lower <em>CU</em><sub><em>s</em></sub>, the lower the <em>VWF</em> transport rate, and the higher the chances of deep percolation; 3) the <em>VWF</em> transport rate depended on soil texture (loam > clay loam > silty clay), but <em>CU</em><sub><em>s</em></sub> was highest for silty clay (76.43 %), medium for clay loam (67.48 %), and lowest for loam (60.36 %); 4) the wetted area and <em>VWF</em> transport distance were positively correlated with soil water at the same moment; and 5) dimensional analysis showed that <em>CU</em><sub><em>i</em></sub> had the greatest effect on <em>CU</em><sub><em>s</em></sub>, followed by saturated hydraulic conductivity and water transport time. This study provides a theoretical basis for adequate values of <em>CU</em><sub><em>i</em></sub> for optimal management of linear-move sprinkler irrigation systems.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104140"},"PeriodicalIF":4.4,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishment and validation of a negative pressure prediction model for rice air-suction seed-metering device 水稻气吸式排种器负压预测模型的建立与验证

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-03 DOI: 10.1016/j.biosystemseng.2025.104126

Zishun Huang , Youcong Jiang , Wei Qin , Siyu He , Cheng Qian , Zaiman Wang , Ying Zang

{"title":"Establishment and validation of a negative pressure prediction model for rice air-suction seed-metering device","authors":"Zishun Huang , Youcong Jiang , Wei Qin , Siyu He , Cheng Qian , Zaiman Wang , Ying Zang","doi":"10.1016/j.biosystemseng.2025.104126","DOIUrl":"10.1016/j.biosystemseng.2025.104126","url":null,"abstract":"<div><div>The negative pressure of the rice air-suction seed metering device has a significant impact on the accuracy, efficiency, uniformity, low damage, and protection of sowing. However, there is a lack of convincing research on predicting the negative pressure. A fast, efficient, and concise method for predicting the negative pressure needs to be urgently studied. To address this issue, a negative pressure prediction model was proposed. Firstly, the most essential equation of the negative pressure prediction model was derived by analysis of the air-suction principle. Secondly, the rice seed gravity <em>G</em> of the equation was fitted to be a function by calculus and weighted average. Afterwards, the air-suction force <em>F</em><sub>a</sub> of the equation was fitted to be a function by the CFD-DEM simulation experiment. To obtain a relatively simple and accurate fitting function, the linear fitting function was chosen to represent the relationship between the air-suction force and the negative pressure. Then, the impact levels of negative pressure and rotation speed are determined to be 400–800 Pa and 30–60 r·min<sup>−1</sup>, respectively. The equivalent coefficient <em>ψ</em> of the equation was calculated to be 2.73 by orthogonal experiment and parameter target optimisation. Finally, the applicability of the pressure prediction model was verified by the verification experiment. The result shows that the prediction model can effectively predict the negative pressures corresponding to various rice seeds. This study provides a theoretical foundation, technical accumulation, and scientific guidance for the subsequent optimisation design of the rice air-suction seed-metering device.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104126"},"PeriodicalIF":4.4,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time six degrees of freedom grasping of deformable poultry legs in cluttered bins using deep learning and geometric feature extraction 利用深度学习和几何特征提取对杂乱垃圾箱中变形家禽腿的实时六自由度抓取

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-02 DOI: 10.1016/j.biosystemseng.2025.104134

Rekha Raja , Luis Angel Ponce Pacheco , Akshay K. Burusa , Gert Kootstra , Eldert Van Henten

{"title":"Real-time six degrees of freedom grasping of deformable poultry legs in cluttered bins using deep learning and geometric feature extraction","authors":"Rekha Raja , Luis Angel Ponce Pacheco , Akshay K. Burusa , Gert Kootstra , Eldert Van Henten","doi":"10.1016/j.biosystemseng.2025.104134","DOIUrl":"10.1016/j.biosystemseng.2025.104134","url":null,"abstract":"<div><div>Grasping deformable natural food products in pick-and-place applications presents a challenging problem in robotics, particularly in cluttered environments. Traditional techniques, such as centroid-based grasping and grasping along the principal axis, often fail when applied to deformable and complex-shaped objects. A real-time grasp pose estimation algorithm was proposed in this paper for robotic pick-and-place tasks involving deformable objects. Instance segmentation, keypoint detection, and stable six degrees of freedom (6-DoF) grasp pose estimation were jointly performed within a unified framework, while avoiding collisions using deep learning and geometric features. Grasp candidates on the objects were generated based on maximum curvature and convex hull methods, which were then filtered to identify the most stable grasp. By projecting 2D keypoints into the depth image, the grasping points were obtained in 3D. The keypoints were used to estimate the 3D orientation of the grasp. The success rate of grasp pose estimation was found to be 83.3 %, which increased to 93.7 % when object segmentation failures were removed. The algorithm was evaluated on a real robotic platform, demonstrating its ability to accurately grasp real poultry legs from a pile, with success rates of 93.8 % for simple scenes and 75.0 % for cluttered scenes. These results highlight state-of-the-art performance and showcase the efficacy and robustness of the proposed system.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104134"},"PeriodicalIF":4.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-ideal continuously stirred bioreactor model for multi-media denitrifying processes 多介质反硝化非理想连续搅拌生物反应器模型

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-02 DOI: 10.1016/j.biosystemseng.2025.104129

Lori Han , Bruce Wilson, Joe Magner

{"title":"Non-ideal continuously stirred bioreactor model for multi-media denitrifying processes","authors":"Lori Han , Bruce Wilson, Joe Magner","doi":"10.1016/j.biosystemseng.2025.104129","DOIUrl":"10.1016/j.biosystemseng.2025.104129","url":null,"abstract":"<div><div>Denitrifying bioreactors are used to treat excess nutrients in agricultural runoff. Efforts to optimise bioreactor design focus on increasing rates of denitrification while reducing hydraulic residence times (HRTs). However, the internal hydraulics that dictate bioreactor efficiency are difficult to characterise. A general bioreactor model is presented that includes non-ideal flow using combined plug and continuously stirred reactors (CSTRs) with dead space and short-circuiting based on zero and first order reaction coefficients. Reactor characteristics of a novel media mixture of walnut shell biochar, Brotex, and woodchips were defined using a conservative tracer (bromide) for two HRTs (12 and 4 h). The fraction of dead space, non-short-circuiting fraction, and the number of reactors were obtained by matching the model's response to measured tracer outflow curves. Secondary parameters calculated include hydraulic efficiency, effective volume, volumetric efficiency, and the Morrill Dispersion Index. The model characterised the reactors as having 1.1 % plug flow with no short-circuiting or dead space and four CSTRs (98.9 % of flow) with 3.7 % short-circuiting and 1.1 % dead space. The closeness between the theoretical and actual HRTs (−6 % for the 12 h design and −4 % for the 4 h design) demonstrates the high level of hydraulic efficiency of this novel bioreactor design as well as the model's ability to properly characterise complicated flow regimes. Additionally, this model can help provide insight into bioreactor performance under a wide range of design criteria, leading to computational supported advancements in bioreactor science.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104129"},"PeriodicalIF":4.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning of clod evolution under rain for numerical simulation of microtopographic variations by clod layout 降雨条件下土体演化的机器学习方法在土体布局微地形变化数值模拟中的应用

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-01 DOI: 10.1016/j.biosystemseng.2025.104130

E. Vannier, R. Dusséaux

{"title":"Machine learning of clod evolution under rain for numerical simulation of microtopographic variations by clod layout","authors":"E. Vannier, R. Dusséaux","doi":"10.1016/j.biosystemseng.2025.104130","DOIUrl":"10.1016/j.biosystemseng.2025.104130","url":null,"abstract":"<div><div>Soil surface roughness (SSR) is shaped by tillage operations and evolves with weathering. It is related to geomorphologic processes and to soil fertility. Thus it is an input of various models and the object of many studies. Numerical generation of rough surfaces is an alternative to measurement, which can be cumbersome.</div><div>This paper proposes a way to numerically generate soil surfaces resembling seedbeds with roughness that have evolved due to rain. As SSR is related to clod-size distribution, the principle is to set modelled clods on a planar surface, as a first approximation of the surface. An experiment was designed to get controlled surface roughness by setting pre-sieved clods on a nearly horizontal surface of loose soil, and then subjecting the surfaces to rainfall events performed by a rainfall simulator. Digital elevation models (DEMs) of each state of the surfaces were recorded by laser scanner to monitor the evolution of clods under rain. Clods were segmented and matched to form a data base of individual clods at each state of the surface. The evolution of clods under rain was modelled by Machine Learning. A set of DEMs was used for learning, the other for test, and several metrics were applied. Obtained results show the robustness of the model. This simple surface representation captures the main properties of the surface. Small scale surface is useful for various applications, such as rough surface scattering, and more generally, modelling where soil surface is an input.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104130"},"PeriodicalIF":4.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methods and challenges in computer vision-based livestock anomaly detection, a systematic review 基于计算机视觉的家畜异常检测方法与挑战综述

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-01 DOI: 10.1016/j.biosystemseng.2025.104135

Yutong Deng , Hongchun Qu , Ansong Leng , Xiaoming Tang , Shidong Zhai

{"title":"Methods and challenges in computer vision-based livestock anomaly detection, a systematic review","authors":"Yutong Deng , Hongchun Qu , Ansong Leng , Xiaoming Tang , Shidong Zhai","doi":"10.1016/j.biosystemseng.2025.104135","DOIUrl":"10.1016/j.biosystemseng.2025.104135","url":null,"abstract":"<div><div>With the rapid advancements of livestock production, computer vision has attracted considerable attention as a non-invasive and effective technology for detecting livestock anomalies. Despite its potential, challenges persist in complex scenarios, such as the difficulty of distinguishing between normal and abnormal states, the inherent complexity and variability of anomalies, and environmental factors that contribute to missed detections and false positives. This paper provides a comprehensive review of the development and applications of computer vision in livestock anomaly detection over the past six years. First, the current research status in this field is introduced, analysing the collected literature by species, countries, years, and equipment applications. Next, various types of anomalies and their corresponding detection methods across spatial, temporal, and spatiotemporal dimensions are categorised. Finally, an in-depth discussion of challenges related to data, task, and models is offered to propose practical solutions to these challenges, and highlight promising directions for future research. We recommend fostering collaboration among multidisciplinary researchers to address challenges in detecting, identifying, and tracking individual anomalies in livestock. These challenges include the difficulty of collecting anomalous samples, the uncertainty and variability of anomalies, and the high similarity among livestock, all of which hinder effective long-term monitoring.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104135"},"PeriodicalIF":4.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of droplet size and spreading parameter by rotary cup atomisation using dimensional analysis 利用量纲分析预测旋转杯雾化液滴尺寸和扩散参数

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-04-01 DOI: 10.1016/j.biosystemseng.2025.104132

Jian Chen , Wei Hu , Xiaoya Dong , Jinlong Lin , Zhouming Gao , Baijing Qiu

{"title":"Prediction of droplet size and spreading parameter by rotary cup atomisation using dimensional analysis","authors":"Jian Chen , Wei Hu , Xiaoya Dong , Jinlong Lin , Zhouming Gao , Baijing Qiu","doi":"10.1016/j.biosystemseng.2025.104132","DOIUrl":"10.1016/j.biosystemseng.2025.104132","url":null,"abstract":"<div><div>This study experimentally investigated the atomisation performance of a rotary cup atomiser, and atomisation parameters (volume median diameter and spreading parameter) were modelled using dimensional analysis. Two types of dimensional correlations were identified from the 126 experimental points for the training dataset. The first type employed multiple linear regression to derive a monomial (power) form equation, while the second used symbolic regression to establish a non-monomial form. The latter more effectively captured the nonlinear characteristics of droplet formation, resulting in higher prediction accuracy, with droplet sizes across the test dataset falling within a ±15 % relative error range. The droplet size distribution was modelled using the two-parameter Rosin-Rammler distribution function, and the spreading parameter was correlated to the main dimensionless parameters through multiple linear regression and symbolic regression. The non-monomial form demonstrated superior accuracy compared to the monomial form. Thus, the combination of dimensional analysis and symbolic regression provided a physically sound and user-friendly approach for the accurate prediction of droplet size and its distribution.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104132"},"PeriodicalIF":4.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation and optimisation of depodding performance in a fresh green soybean harvester 鲜青大豆收割机脱粒性能的数值模拟与优化

IF 4.4 1区农林科学

Biosystems Engineering Pub Date : 2025-03-31 DOI: 10.1016/j.biosystemseng.2025.104127

Ying Zhao , Ranbing Yang , Xiaobo Xi , Xirui Zhang , Wenqin Ding , Jinyi Liu , Suwei Xiao , Mao Lin , Jiejie Xing , Songmei Yang , Can Hu

{"title":"Numerical simulation and optimisation of depodding performance in a fresh green soybean harvester","authors":"Ying Zhao , Ranbing Yang , Xiaobo Xi , Xirui Zhang , Wenqin Ding , Jinyi Liu , Suwei Xiao , Mao Lin , Jiejie Xing , Songmei Yang , Can Hu","doi":"10.1016/j.biosystemseng.2025.104127","DOIUrl":"10.1016/j.biosystemseng.2025.104127","url":null,"abstract":"<div><div>A self-propelled beater drum harvester was designed in this study. A systematic analysis of the missed harvest and damage rates during the harvest process was conducted through material mechanical performance testing combined with Workbench and engineering discrete element method engineering discrete element method (EDEM) simulation software. Workbench was used to validate the compression performance of green soybean pods, and the results were highly consistent with the experimental data. A dynamic model for the beater depodding performance was established, and an orthogonal regression experiment was conducted to investigate the effects of drum rotating speed (<em>A</em><sub>1</sub>), cutting platform height (<em>B</em><sub>1</sub>), and forward speed (<em>C</em><sub>1</sub>). The results showed that the models for missed harvest and damage rates were highly significant (p < 0.0001). Using EDEM software, different operational conditions and combinations of factors were simulated to conduct an in-depth study of the missed harvest rate (<em>Y</em><sub>1</sub>), damage rate (<em>Y</em><sub>2</sub>), and total loss rate (<em>Y</em><sub><em>T</em></sub>) the harvester. The maximum prediction error between the simulation results and experimental validation was 9.78 %. To minimise total loss, the parameters were optimised, yielding the following optimal combination: <em>Y</em><sub><em>T</em></sub> of 10.8 %, <em>Y</em><sub>1</sub> of 6.9 %, and <em>Y</em><sub>2</sub> of 3.9 %. The corresponding <em>C</em><sub>1</sub> was 0.67 m s<sup>−1</sup>, <em>A</em><sub>1</sub> was 305 r. min<sup>−1</sup>, and <em>B</em><sub>1</sub> was 40 mm. The errors in the simulation analysis, model prediction, and experimental validation were all within 9.8 %. This study provides scientific guidance for optimising the design of fresh green soybean harvesters.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"253 ","pages":"Article 104127"},"PeriodicalIF":4.4,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0