Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2698
DC FieldValueLanguage
dc.contributor.advisor鄔詩賢先生zh_TW
dc.contributor.advisorShin-shyn Wuen_US
dc.contributor.author李法賢zh_TW
dc.contributor.authorLee, Far-shynen_US
dc.date1993zh_TW
dc.date.accessioned2014-06-05T11:43:49Z-
dc.date.available2014-06-05T11:43:49Z-
dc.identifier.urihttp://hdl.handle.net/11455/2698-
dc.description.abstract" 回彈 "是製造成型結構板件過程中所發生的一種常見的現像o 本研究乃 以有限元素法來分析金屬板件在鍛造過程中板金引伸加工後的外形﹑應力 分佈﹑應變大小與外力釋放回彈後的形狀o本研究以 "更新拉格朗日公 式" 作為金屬在成型過程中系統的能量平衡方程式推導o 而適當的黏彈塑 性材料模式則包含了大變形及非彈性變形率等效應o 在本研究並以 "哈特 結構模型" 作為黏彈塑性材料的模式o 並假設一金屬板面中間受外力生成 v型板面,該板面兩端為可滑動與固定二個狀況,亦考慮不同摩擦係數的 變因對其結果的影響o 當摩擦係數愈大時,其板件上各種應變的拉伸效應 與壓縮效應愈顯著,並且回彈量的大小亦有降低的趨勢o 經由本研究提供 了金屬成型結構板件在引伸加工過程中的結果,以作為在實際製造過程中 設計及修正的參考o "Springback" is one of the popular phenomena occurred in the metal forming process of plate structures during manufacturing. Here, finite element methods and related models are studied for the prediction of the formed shapes of plate structures, and the stress and strain distributions and reponding configurations during springback. Updated Lagrangian formulation are derived as the equililrium equations of the system in the numerical process.Elastic-Visco plastic models are considered and large deformation,non-elastic deformed rates are included. " Hart's Constitutive Model " is implemented to simulate the material behaviors of the structures. The object is assumed to be a plate which is punched by a road nd deformed with a V-shape. Ends of the plate model are assumed to be either fixed or moveable. Various friction coefficients in the structures are also studied. As the friction coefficients become larger, the response of strains appear more obvious and the quantity of springback is descend. Results present in this study compared with available experimental datum are signficant and valuable for the prediction of the forming process of plate strures in manufacturing.zh_TW
dc.language.isoen_USzh_TW
dc.publisher機械工程研究所zh_TW
dc.subjectElastic-viscoplasticen_US
dc.subject黏彈塑性zh_TW
dc.subjectSpringbacken_US
dc.subjectHart's Constitutive Modelen_US
dc.subject回彈zh_TW
dc.subject哈特結構模型zh_TW
dc.title金屬之黏彈塑性回彈電腦輔助設計研究zh_TW
dc.titleComputer-Aided Design in Elastic-viscoplastic Springback of Metalen_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-
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