Grain kernels are finite and discrete materials. Although flowing grain can behave like a
continuum fluid at times, the discontinuous behavior exhibited by grain kernels cannot be …

为确定小麦离散元仿真参数, 以真实试验及不同参数组合下仿真得到的小麦颗粒堆休止角为响应
值, 基于响应面优化标定了小麦离散元仿真参数. 研究应用Plackett-Burman 试验对8 …

In this study, we determined the parameters of wheat required in discrete element method
(DEM) simulation by the response surface method. The repose angle is a macroscopic …

颗粒碰撞广泛存在于农业和食品领域中, 碰撞恢复系数是确定颗粒碰撞后运动行为的主要参数之
一, 通常以颗粒碰撞前后速度的比值来表述, 使用合适的测量装置可以获得准确的碰撞恢复系数 …

Highlights•Centrifugal rice seeding spreader with baffle ring designed for mounting on a
UAV.•Using a baffle ring changes seed trajectory and improves distribution uniformity.•DEM …

采用计算流体力学与离散元耦合的方法对割前摘脱稻麦联合收获机惯性分离室内谷物的运动
进行数值模拟. 仿真结果表明: 籽粒和短茎秆在气流作用下能够实现分离, 分离室入口气体速度 …

To simulate the bending behavior of wheat straw, a flexible straw model was developed
based on the Hertz-Mindlin with bonding model using discrete element method. The …

Angle of repose is an important macroscopic feature in characterising the interactions within
an assembly of particles. In order to accurately predict the angle of repose of the particle …

As one of the most widely applied technology at present, near-earth spectrum detection
technology has been used in precise variable fertilizer applicator for rice and wheat. In order …

In order to accurately establish a discrete element model for the whole plant flexibility of
upright rice during the harvesting period, several physical characteristics, such as geometric …