非结构化农业散粒物料间碰撞恢复系数测定实验平台  

Experimental platform for determining restitution coefficient of irregular agricultural particle-particle collision

作　　者：杨靖恺 刘桂成 付函 杜文迪 吴志治 YANG Jingkai;LIU Guicheng;FU Han;DU Wendi;WU Zhizhi(College of Engineering,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]华南农业大学工程学院,广东广州510642

出　　处：《实验技术与管理》2022年第6期109-114,共6页Experimental Technology and Management

基　　金：国家自然科学基金项目(51905179);华南农业大学教育教学研究和改革项目(JG19025)。

摘　　要：在应用理论力学指导现代农业机械设计的教学和科研中,恢复系数是仿真设计作物播种、收获、输送等环节相关工作部件和性能分析的属性参数之一。针对现有实验设备获取非结构化农业散粒物料间碰撞恢复系数受限的问题,基于滑动碰撞原理、镜面反射原理和运动形式转换思路,开发了三维碰撞恢复系数测定实验平台。以鲜苹果为测试对象,开展果实间不同碰撞角度下恢复系数的测定实验,结果表明该平台测定精度高、处理简单、适应性广,完善了现代农业机械设计领域力学的实验教学和科研手段,丰富了实践教学环节,促进了科研创新,为科研辅助教学提供了良好的平台。In the application of theoretical mechanics to guide teaching and scientific research of modern agricultural machinery design,coefficient of restitution(CoR)is an essential parameter required to establish simulation models used for carrying out performance analysis of working parts related to sowing,harvesting and conveying.Aiming at the problem that the existing experimental equipment is limited to obtain the CoR for collision between unstructured agricultural granular materials,a CoR of three-dimensional collision measurement experimental platform is developed based on the sliding collision principle,the mirror reflection principle and the idea of motion form conversion.Taking fresh apples as the test object,experiments are carried out to determine the CoR under different collision angles between fruits.Results indicate that the platform features high accuracy,simple processing,and great adaptability.In addition,across the field of modern agricultural machinery design,it improves experimental teaching and scientific research approaches for mechanics,enriches practical teaching,promotes scientific innovation,and offers a good platform for teaching with an assistance of scientific research.

关 键 词：散粒物料 恢复系数 镜面反射 三维碰撞 运动学 

分 类 号：TH824[机械工程—仪器科学与技术] S237[机械工程—精密仪器及机械]