简介:Thetangentresistanceontheinterfaceofthesoil-moldboardisanimportantcomponentoftheresistancetomovingsoil.Wedevelopedsimplifiedmechanicalmodelstoanalyzethisresistance.Wefoundthatitiscomposedoftwocomponents,thefrictionalandadhesiveresistances.Thesetwocomponentsoriginatefromthesoilpore,whichinducedacapillarysuctioneffect,andthesoil-moldboardcontactareaproducedtangentadhesiveresistance.Thesetwocomponentsvarieddifferentlywithsoilmoisture.Thuswepredictedthatresistancereductionagainstsoilexertedonthenon-smoothbionicmoldboardismainlyduetotheeliminationofcapillarysuctionandthereductionofphysical-chemicaladsorptionofsoil.