中国农业大学学报2025，Vol.30Issue(3)：185-196,12.DOI:10.11841/j.issn.1007-4333.2025.03.17
滚筒-连杆组合式草方格铺设打散机构的仿真分析与试验
Simulation analysis and test of a roller-linkage combination type grass square laying and dispersing mechanism
摘要
Abstract
Aiming at the problems of uneven straw dispersal and non-compliance of laying thickness during the sand barrier laying operation of the straw square lattice with loose straw as raw material,a simulation analysis of straw dispersal and conveying process was carried out based on the multi-body dynamics and discrete element coupling method.Taking the roller rotational speed,roller spacing and crank rotational speed as the influencing factors,and the average thickness of the straw on the conveying plate and the uniformity of straw after dispersal as the response values,a response surface optimization test was carried out based on the pre-tests and the single-factor test to determine the influencing law of each factor on response values.Pre-test and single-factor test were used to determine the influence law of each factor on the response value.Based on preliminary tests,a response surface optimization test was conducted using Design-Expert software to establish a quadratic polynomial regression model.The lowest average thickness of straw and the highest uniformity of straw within the range of grass square sand barrier laying requirements were taken as the target values,and the optimization solution was carried out through the response surface.The simulation test results showed that the performance of the dispersing device was optimal with a roller speed of 68.98 r/min,a roller spacing of 184.7 mm and a crank speed of 90.63 r/min.Compared with the simulated theoretical values,the error of the average thickness of straw in the bench test was 2.89％,and the error of straw uniformity was 1.96％.关键词
打散机构/草方格/DEM-MBD/仿真优化Key words
breaking mechanism/grass square/DEM-MBD/simulation optimization分类
农业科技引用本文复制引用
郭佳辉,孙步功,祁渊,张鹏,余伟军,王正宇,徐先英,马新兵..滚筒-连杆组合式草方格铺设打散机构的仿真分析与试验[J].中国农业大学学报,2025,30(3):185-196,12.基金项目
甘肃省重大科技计划项目(21ZD4FA010) （21ZD4FA010）
