摘要
深松技术是旱地保护性耕作体系中的重要技术措施之一,高效节能是深松技术的发展方向。深松铲所受阻力是深松耕作的主要阻力来源。通过对金龟子和家鼠的足趾结构的研究,设计了一种新型的深松铲结构。结合四川的土壤条件,采用Drucker-Prager模型,利用有限元分析软件Abaqus对深松工艺数值仿真。在20℃常温和23°切削角的条件下,与JB/T 9788-1999深松铲比较,新型深松铲土壤应力分布和土壤扰动轮廓一致,深松铲所受土壤的反作用力减小,在相同前进速度和耕作深度的情况下,功率消耗降低了20.6%。
Subsoiling is an important technique of conservation tillage systems on dry land. High efficiency and energy saving are required in subsoiling techniques. A new subsoiler structure is presented by study on toes＇ structures of scarab and rats. Consider the soil conditions in Sichuan, a subsoiling process simulation using drucker-prager model is performed by finite element analysis software of Abaqus, comparing new subsoiler with JB/T 9788-1999 subsoiler under the condition of 20℃ room temperature and 23° cutting angle, simulations＇ results show that soil stress distributions are identical with soil disturbance contours, and the reaction force from the soil decreased, power consumption was reduced by 20.6% with the same speed and depth.
出处
《农机化研究》
北大核心
2013年第7期53-57,共5页
Journal of Agricultural Mechanization Research
基金
四川省高校重点实验室开放基金项目(SZJJ2009-024)
西华大学人才培养项目(R0820208)
关键词
深松铲
有限元分析
结构设计
subsoiler
finite element analysis
structural design
