中国农业大学学报2024，Vol.29Issue(4)：152-163,12.DOI:10.11841/j.issn.1007-4333.2024.04.13
管道输送装置苹果下落过程分析与仿真
Analysis and simulation of the apple falling process in pipeline transportation system
摘要
Abstract
In response to the significant issue of fruit collision damage during the post-harvest pipeline transportation of apple,research is conducted on the motion laws of apples falling within the pipeline and the optimal parameter combination for pipeline transportation devices.ANSYS Workbench LS-DYNA software was used to analyze the dynamic simulation of apple falling,and a dynamic model of apple falling within the pipeline was established.A theoretical analysis was combined with simulation to explore the motion laws of apples within the pipeline.Taking the curvature radius of transportation pipelines,the diameter of apples,and the type of buffering materials as factors,single-factor simulation experiments and a 3-factor and 3-level orthogonal experiment were conducted with the equivalent stress between apples and fruit baskets during the collision as the experimental indicator to obtain the optimal parameter combination for the pipeline transportation devices.Benchmark tests were applied to validate the reliability of the simulated apple transportation process.The results of single-factor experiments showed that:With the increasing of the curvature radius of the transportation pipelines,the positions of collisions between apples and fruit baskets moved closer to the bottom of the baskets,and the equivalent stress during collision increased gradually.With the increasing of the diameter of apples,the equivalent stress during collision also increased gradually.The impact of buffering materials on the buffering effect in descending order was as follows:pearl cotton＞EVA foam＞thermal insulation and moisture retention belt＞bubble film＞corrugated paper lining.The results of the orthogonal experiments showed that all the three factors had a significant impact on the response value,with the curvature radius of transportation pipelines having the greatest impact,followed by the type of buffering materials,and then the diameter of apples.When the diameter of apples was 75 mm,and the optimal parameter combination for the pipeline transportation devices was the curvature radius of 200 cm with pearl cotton as the buffering material,resulting in the minimum equivalent stress of 26.48 kPa during the collision between apples and fruit baskets.In conclusion,the pipeline transportation devices provided the best protection for apples.The model established for apple falling in pipelines accurately simulated the real falling process of apples,which can provide a scientific basis for designing and optimizing apple pipeline transportation devices.关键词
苹果/管道输送/动力学仿真/等效应力Key words
apple/pipeline transport/dynamic simulation/equivalent stress分类
农业科技引用本文复制引用
张阔,刘洪杰,李建平,刘树腾,李绍波,徐硕..管道输送装置苹果下落过程分析与仿真[J].中国农业大学学报,2024,29(4):152-163,12.基金项目
河北省现代农业产业技术体系苹果创新团队现代果园装备与智能化项目(HBCT2023120202) （HBCT2023120202）
财政部农业农村部国家现代农业产业技术体系建设项目(CARS-27) （CARS-27）
