博碩士論文 93323019 完整後設資料紀錄

DC 欄位 語言
DC.contributor機械工程學系zh_TW
DC.creator李鎮源zh_TW
DC.creatorJeng-Yuan Lien_US
dc.date.accessioned2006-7-12T07:39:07Z
dc.date.available2006-7-12T07:39:07Z
dc.date.issued2006
dc.identifier.urihttp://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=93323019
dc.contributor.department機械工程學系zh_TW
DC.description國立中央大學zh_TW
DC.descriptionNational Central Universityen_US
dc.description.abstract本研究以縮尺發動機藥柱結構(以下簡稱為縮尺發動機)為對象,探討該結構件於室溫狀態下,受到飛彈掛載振動頻譜作用下之動態特性。試驗結果不僅量測到縮尺發動機之應變、加速度、試片溫度等資料,同時並將試驗結果與有限元素模擬結果進行頻率響應與隨機振動之分析比對,以證實本研究所建立之有限元素分析方法的適用性。 另外,研究中並進行藥柱疲勞壽限預測模式的評估,探討藥柱於掛載振動頻譜負荷下之疲勞壽限評估技術。其研究方法是參考飛彈掛載功率頻譜,依照等能量理論進行逆傅立葉轉換為時域訊號,再輸入MTS萬能試驗機進行變動應力振幅疲勞試驗。同時,加入時域及頻域疲勞壽限分析等兩種疲勞損傷分析之比對,期以建立一套合適的疲勞壽限預測模式。由分析結果可得知,時域分析法與頻域分析Narrow Band方法的預測結果,較為接近實際試驗結果,兩者皆在試驗值之三倍誤差內。經由本研究所得之研究成果,不僅建立藥柱結構於有限元素模擬分析技術外,同時獲得藥柱疲勞壽限預測之最佳方法,相信可提供後續在飛彈發動機藥柱結構於設計建造與安全分析之參考依據。zh_TW
dc.description.abstractThis thesis investigates the dynamic characteristics of reduced scale solid propellant and fatigue life of solid propellant specimen under spectrum loading. The acceleration and strain responses were analyzed with finite element method and were compared to those of experiments. The outcome proved that the present FEM model is suitable and reliable. Moreover, the fatigue experiments were enforced on a MTS machine, and the fatigue life of solid propellant under spectrum loading was analyzed with stress-life method and four kinds of frequency domain methods. The results show that stress-life method and “Narrow Band” method were more suitable for solid propellant.en_US
DC.subject縮尺發動機藥柱zh_TW
DC.subject隨機振動zh_TW
DC.subject頻率響應zh_TW
DC.subject響應頻譜zh_TW
DC.subject疲勞壽限預測zh_TW
DC.subjectFatigue Life Predictionen_US
DC.subjectResponse Spectrumen_US
DC.subjectFrequency Responseen_US
DC.subjectRandom Vibrationen_US
DC.subjectReduced Scale Solid Propellanten_US
DC.title縮尺發動機振動與疲勞壽限之研究zh_TW
dc.language.isozh-TWzh-TW
DC.type博碩士論文zh_TW
DC.typethesisen_US
DC.publisherNational Central Universityen_US

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