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Fixed Combination Of Surface Modeling Of Thermal Contact Conductance

Posted on:2015-01-13Degree:MasterType:Thesis
Country:ChinaCandidate:L N MaFull Text:PDF
GTID:2261330428477800Subject:Mechanical and electrical engineering
Abstract/Summary:PDF Full Text Request
In the machine tool or all kinds of mechanical equipment in themanufacturing or assembly, to meet the various functions of equipmentperformance, and all kinds of processing requirements and the transportation isconvenient, is according to certain specific requirements put various partsassembled together, so the mechanical structure is generally not a completecontinuous whole.Between parts and parts between components and betweencomponents and parts and components in contact surface is called mechanicaljoint surface, or in combination with surface.This led to the joint surface in themechanical equipment is widespread Combined with the two contact surfacecontact between the two parts in micro convex peak contact between roughsurfaces,Means that parts of the surface contact is not our ideal contactcompletely, thus destroying the structure of the whole continuity anddiscontinuity of the overall structure of the contact stiffness damping ofthermal resistance, etc. Of the more important influence.This paper is to explore the combined surface produced by thermalconductivity the contact parameters of the related effects of the mechanicalstructure,combined with the related parameters on the surface of contact withthe contact of the relationship between thermal conductivity and thermalconductivity of influencing factors.In view of this article mainly from the following several aspects relatedresearch. First study the contact between the two contact material mechanismand contact behavior; Second analysis in combination with surface contactthermal conductivity mechanism; Again, by combining the theoretical modelof the contact thermal conductivity under different contact deformationmechanism are established contact fractal theory model; Finally through theestablished model for contact with the specific parameters of the relationshipbetween thermal conductivity and the joint surface, and to contact the influence factors of thermal conductivity is analyzed, and compared withclassical experiment indirectly proves the correctness of the model in thispaper.
Keywords/Search Tags:Joint interfaces, Contact fractal theory, Contact conductance
PDF Full Text Request
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