马铃薯仿生挖掘铲减阻性能研究

据蝼蛄前足胫节爪趾第1趾的体视显微镜照片设计了马铃薯挖掘机挖掘铲铲片。为对仿生铲片减阻及碎土性能进行研究,基于离散单元法进行仿生铲片挖掘土壤数值模拟过程。为突出仿生铲片良好的挖掘性能,在同等条件下与普通铲片进行仿真结果对比。结果表明:仿生铲片较普通铲片前进阻力减小了11.36%,垂直方向减小了17.65%;对比两种铲片挖掘土壤后土壤颗粒黏结数可知:仿生铲片对土壤颗粒间黏结力的破坏率比普通铲片高2.68%。仿生挖掘铲能将升运的土壤剪切破碎,逐步减小水平和垂直方向阻力,具有较好的应用前景。

Research on the drag reduction performance of potato bionic digging shovel

According to the stereoscopic microscopic photograph of first toe of claw toe in forefoot of the mole cricket has designed the shovel of the excavator and carried out the research for the drag reduction and pulverized soil performance, based on the discrete element method carried out the numerical simulation process for the bionic shovel excavated soil. In order to protrude the good excavating performance of the bionic shovel, under the same condition compared with the ordinary shovel carried out the comparison of the simulation results. The results showed that: As compared with the ordinary shovel, the forward resistance of the bionic shovel was reduced 11.36% and the vertical direction was reduced 17.65%. Comparing the number of soil particle adhesion between two kinds of shovel excavated soil, we can know the soil crushing rate of the bionic shovel was higher than ordinary shovel by 2.68%. The bionic excavating shovel can shear and break the uplift soil and gradually reduce the horizontal and vertical resistance, so it has a good application prospect.