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一种精整机压实强度的关键参数控制分析
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作者 赵钰 《农机化研究》 北大核心 2023年第3期36-39,共4页
通过对精整机的工作对象土壤特性进行分析,建立了土壤压实过程中的参数模型,获取在土壤压实过程中对压实强度有关键影响的控制参数。对不同影响参数进行试验验证,结果表明:在精整机工作过程中,压实力和压实滚轮直径对土壤压实强度和压... 通过对精整机的工作对象土壤特性进行分析,建立了土壤压实过程中的参数模型,获取在土壤压实过程中对压实强度有关键影响的控制参数。对不同影响参数进行试验验证,结果表明:在精整机工作过程中,压实力和压实滚轮直径对土壤压实强度和压实变形量影响显著,压实滚轮宽度对土壤压实强度和压实变形量影响不显著。研究可为精整机使用过程中参数调整提供理论指导。 展开更多
关键词 精整机 土壤压实强度 土壤变形量 控制参数
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Numerical simulation of tire/soil interaction using a verified 3D finite element model 被引量:6
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作者 Namjoo Moslem Golbakhshi Hossein 《Journal of Central South University》 SCIE EI CAS 2014年第2期817-821,共5页
The compaction and stress generation on terrain were always investigated based on empirical approaches or testing methods for tire/soil interaction.However,the analysis should be performed for various tires and at dif... The compaction and stress generation on terrain were always investigated based on empirical approaches or testing methods for tire/soil interaction.However,the analysis should be performed for various tires and at different soil strengths.With the increasing capacity of numerical computers and simulation software,finite element modeling of tire/terrain interaction seems a good approach for predicting the effect of change on the parameters.In this work,an elaborated 3D model fully complianning with the geometry of radial tire 115/60R13 was established,using commercial code Solidwork Simulation.The hyper-elastic and incompressible rubber as tire main material was analyzed by Moony-Rivlin model.The Drucker-Prager yield criterion was used to model the soil compaction.Results show that the model realistically predicts the laboratory tests outputs of the modeled tire on the soft soil. 展开更多
关键词 tire/soil interaction finite element method(FEM) soil compaction stress distribution inflation pressure
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