| DC 欄位 |
值 |
語言 |
| DC.contributor | 機械工程學系 | zh_TW |
| DC.creator | 黃濬泓 | zh_TW |
| DC.creator | Jun-Hong Huang | en_US |
| dc.date.accessioned | 2005-7-14T07:39:07Z | |
| dc.date.available | 2005-7-14T07:39:07Z | |
| dc.date.issued | 2005 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=92323010 | |
| dc.contributor.department | 機械工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本文目的在利用Hwang[22]所提出的流線函數，來解析雙金屬中空擠製加工，以建構複合材對擠製問題的上界限解析模式。首先利用塑性不可壓縮定理，求取在環狀襯套及蕊材進、出口端之剛塑界面函數，並以上界限理論進而求得擠製消耗總功率，本文數值分析係利用IMSL[10]最佳化程式〝NCONF〞以求得上界限解，將其解與Chitkara[6]所提出的理論、實驗加以比對和驗証，進而探討直線模、曲線模擠製加工的面積減縮率、半模角及摩擦因子等條件對擠製壓力與出口端半徑比之關係。 | zh_TW |
| dc.description.abstract | The purpose of this investigation is to discuss bi-material tubes extrusion using Hwang[22] proposed stream fuction. Building a model of bi-material upper bound method for extrsion problem. First, using incompressible plastic method to obtain sleeve layer and core layer of rigid/plastic interface fuction, by using upper bound method obtain extrusion of the total power. This investigation is number solution analyse utilize IMSL optimization procedure NCONF to request upper-bound solutin, The solution with Chitkarara[6] proposed theory and experiment prove. Discuss line die and curve die is reduction of area ,the friction factor, the semi-die angle and ect. to counter to with the effect of extrusion pressure and final radius ratio. | en_US |
| DC.subject | 上界限法 | zh_TW |
| DC.subject | 雙金屬 | zh_TW |
| DC.subject | 流線函數 | zh_TW |
| DC.subject | bi-metallic | en_US |
| DC.subject | upper bound method | en_US |
| DC.subject | stream funcion | en_US |
| DC.title | 以上界限法分析雙金屬中空管擠製 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Application of a generalised upper bound analysis in extrusion of asi-symmetric bi-metallic tubes | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |