【作者】 杨欣； 李建平； 冯晓静； 刘洪杰； 刘俊峰；

【Author】 Yang Xin, Li Jianping, , Feng Xiaojing, Liu Hongjie, Liu Junfeng (College of Mechanical and Electrical Engineering Agricultural University of Hebei Baoding 071001 China)

【机构】 河北农业大学机电工程学院；

【摘要】 利用AIP创建了苹果树苗起苗铲三维参数化特征模型,考虑几何结构、铲体材料、载荷和受力等因素,通过内嵌于AIP的ANSYS技术模块创建了挖掘铲三维有限元模型,划分了有限元网格,获得了内支撑三维应力、变形和安全系数,并根据分析结果提供的参考改进起苗铲结构。对比分析改进前后的三维应力,结果表明改进设计的起苗铲等效应力小于材料屈服极限,安全系数达到设计要求,样机起苗试验表明,改进的起苗铲工作阻力小,起苗作业可靠,达到了预期作业性能指标。更多还原

【Abstract】 The three-dimensional parameterized model of apple seeding lifter were created using Autodesk Inventor Professional (AIP) system. The Finite Element Analysis (FEA) of the lifter were performed through ANSYS technology embedded in AIP analysis types, during the FEA progress, configuration, lifter material, loads and forces were defined and added on the lifter, the three-dimensional FEA mesh was created, and stress, displacement, and safety factor were obtained after finite element calculation. Then some modifications of lifter configuration were made according to the FEA results, through analysis of the new lifter model, the von-stress and the maximal principal stress were less than the yield limit of the lifter material, the safety factor was also achieved the design purpose. The experiment of lifting seeding results showed that the lifter which can provide less resistance and better working credibility with enough safety performance was achieved.更多还原