Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/1717
DC FieldValueLanguage
dc.contributor.advisor游 憲 一zh_TW
dc.contributor.advisorHsien-I Youen_US
dc.contributor.author黃憲裕zh_TW
dc.contributor.authorHwang, Hsien-Yuen_US
dc.date1998zh_TW
dc.date.accessioned2014-06-05T11:41:29Z-
dc.date.available2014-06-05T11:41:29Z-
dc.identifier.urihttp://hdl.handle.net/11455/1717-
dc.description.abstract本文乃利用碎形理論中的W-M碎形函數來模擬不同粗糙度的加工表面,再 透過赫茲接觸理論,分析剛性平板與一粗糙表面的接觸及兩粗糙面的接觸 ,探討尖點彈性-塑性變形的狀態,及實際接觸面積與接觸負荷間之關係 。對於兩粗糙表面的接觸狀態,可將兩粗糙面視為一等效的粗糙面,而此 時的接觸狀態視為此等效粗糙面與剛性平板的接觸。個別粗糙面的高度分 佈均符合高斯分佈,但等效粗糙面的高度分佈一般並未符合高斯分佈。 對於此兩種接觸型態,數值模擬所得的結果如下:(1)實際接觸面積與接 觸負載,隨接觸壓陷率的增加而增加。某一接觸壓陷率下,粗糙度愈大, 其接觸尖點受到愈大的接觸負載,實際接觸面積亦較大。(2)實際接觸面 積與接觸負載間,存在一指數關係,即 ,且表面愈粗糙,n值愈近於一 。(3)實際平均接觸壓力隨接觸負載的增加,而迅速達到一定值。(4)對於 兩粗糙面的接觸而言,相對接觸位置對上述的結果並不影響。但其粗糙度 隨各接觸位置的相對表面配合率的不同而有所變化,即配合率愈大時,接 觸面愈密合,因而等效粗糙度降低,反之亦然。關鍵字:碎形粗糙面、接 觸、彈-塑性變形zh_TW
dc.description.abstractIn this paper , two contact cases , namely, a rough surface against a flat plane and two rough surfaces brought into contact , are investigated . The rough surface is simulated by the W-M function derived from fractal theory . The elastic-plastic deformation of the contact asperity and the relationship of actual contact area versus the contact loading were analyzed using Hertzian theory . The case of two simulated rough surfaces brought into contact can be simplified into the situation of a equivalent roug Some results from the numerical analysis are listed below : (1) The actual contact area and the contact loading increased as the approaching ratio increase . For a given approaching ratio , the actual contact area and the contact loading were higher when the roughness of the contact surface was greater . (2) A power law relationship is proposed in this paper , and the greater rough surface has its exponent n closer to unity . (3) The mean actual contact pressure increases rapidly to a stable value as tKeyword : Fractal rough surface、 contact、elastic-plastic deformationzh_TW
dc.language.isoen_USzh_TW
dc.publisher機械工程學系zh_TW
dc.subjectFractal rough surfaceen_US
dc.subject碎形粗糙面zh_TW
dc.subjectcontacten_US
dc.subjectelastic-plastic deformationen_US
dc.subject接觸zh_TW
dc.subject彈-塑性變形zh_TW
dc.title碎形模擬粗糙面在垂直負荷下之彈-塑性分析zh_TW
dc.titleAnalysis of Elastic-Plastic Contact of the Fractal Simulated Rough Surfaces under Normal Loaden_US
dc.typeThesis and Dissertationzh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
Appears in Collections:機械工程學系所
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