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对小型振筛式马铃薯挖掘机振动挖掘铲的性能参数进行优化,借助Adams和Ls-Dyna相结合法模拟振动挖掘铲挖削土壤过程,据4因素3水平响应曲面法试验设计原理对影响挖掘铲挖削阻力的因素进行了多因素方差分析,并建立和优化了回归模型。结果表明:影响牵引阻力的因素由大到小依次为振动频率、牵引速率、入土角、振幅;当牵引速率为0.67m/s、振动频率13.77Hz、振动幅值11.93mm、入土角8.35°时,优化牵引阻力为1 449.59N。田间验证试验结果表明:试验阻力平均值与仿真结果误差<5%,说明回归模型能较好的反映振动频率、牵引速率、入土角、振幅于牵引阻力之间的关系。
The performance parameters of the vibrating shovel shovel for the miniature vibrating sieve potato shovel were optimized. The combination of Adams and Ls-Dyna was used to simulate the shovel shoveling of the soil. According to the 4-factor 3 horizontal response surface methodology, The factors of digging resistance were analyzed by multivariate analysis of variance and the regression model was established and optimized. The results show that the influencing factors of traction resistance are vibration frequency, traction rate, soil entry angle and amplitude in descending order; when the traction rate is 0.67m / s, the vibration frequency is 13.77Hz, the vibration amplitude is 11.93mm and the soil depth is 8.35 ° , Optimize the traction resistance of 1 449.59N. The field test results show that the error between the average of the test resistance and the simulation result is less than 5%, indicating that the regression model can better reflect the relationship between the vibration frequency, the traction rate, the soil penetration angle and the amplitude of the drag force.