Open AccessSimulation analysis and experiment of sampling process of wheel brush sampler based on discrete element method
Author(s) -
Qiming Wei,
Ran Liu,
Hua Zhang,
Xingyuan Wu,
Haitao Luo
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2137/1/012058
Subject(s) - brush , torque , sampling (signal processing) , discrete element method , rotational speed , rotation (mathematics) , process (computing) , finite element method , computer science , simulation , engineering , mechanical engineering , structural engineering , mechanics , physics , detector , artificial intelligence , telecommunications , thermodynamics , operating system
In order to study the brush sweep sampling process through simulation analysis, the structure of the asteroid sampler is simplified on the basis of retaining the wheel brush. Soybean particles are selected as the verification sampling particles, and the physical and contact parameters of calibrated soybean particles are applied to the discrete element simulation software EDEM and the relationship between the sampling wheel brush speed and torque is analysed. At the same time, a set of wheel brush asteroid sampler ground torque test system is built to verify the accuracy of the discrete element simulation results. The results show that the driving torque of the sampling wheel brush is mutational in the process of sampling, and the faster the rotation speed of the sampling wheel brush, the more the mass of the collected particles, and the greater the driving torque required for the sampling wheel brush. This research provides a method basis for the structure selection and parameter optimization design of the asteroid sampler.