摘要
挖掘铲的性能主要决定于铲片的形式,传统的试验方法往往存在研究费用高、周期长的问题。针对这个问题以及土壤由无数小颗粒组成的特点,运用离散元分析软件,以一种新型仿生挖掘铲为研究对象,通过数值模拟、计算和比较,对其工作过程中所受的阻力以及土壤的破碎率进行了动态仿真分析。分析结果表明:与普通挖掘铲相比较,该仿生挖掘铲在X方向上的平均减阻率为10.41%,在Y方向上的平均减阻率为16.28%,土壤破碎率提高了2.67%。因此,在结构和性能上具有一定的优越性和可推广价值。同时,通过分析实例充分展示离散元法的独特优势及其可推广性,对类似研究具有一定的可参考性。
Performance of digging shovel is determined by the shape of shovel-piece, and traditional experiment method commonly costs a lot with long cycle. Aiming at the problems above and the soil characteristic, composed by small particles, a new bionic digging shovel was studied by using EDEM. Based on numerical simulation, calculation, and comparison, dynamic simulation analysis of resistance and crushing rate during the digging operation was conducted. The results show that the average drag reducing efficiency at X direction and Y direction are 10.41% and 16.28% respectively, and the crushing rate increases 2.67＆. Therefore, the designed digging shovel has certain superiority and extension value because of its performance and structure. Unique advantages of discrete element method are exhibited by example analysis, which can be referenced by similar studies.
作者
王玉晶
王祎才
刘孜文
张毅
Wang Yujing Wang Yicai Liu Ziwen Zhang Yi(Gansu Polytechnic College of Animal Husbandry ＆ Engineering, Wuwei, 733006, Chin)
出处
《中国农机化学报》
2017年第3期23-26,共4页
Journal of Chinese Agricultural Mechanization
关键词
仿生挖掘铲
离散元法
EDEM
bionic digging shovel
discrete element method
EDEM
