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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/115904


    Title: 含預裂紋之磁電彈材料受機電磁動力載荷之裂紋擴展問題研究
    Authors: 應宜雄;毛思堯;羅佳芸;朱郁曉;范馨予;陳炳憲;謝采倫
    Keywords: 磁電彈材料;擴展裂紋;動力破壞;暫態;應力強度因子;
    Date: 2018-07
    Issue Date: 2019-03-07 12:11:25 (UTC+8)
    Abstract: 很多的智能複合材料或元件都具備壓電與壓磁耦合的磁電效應,常見的應用有磁感測器、電流感 測器和磁獵能器等。本兩年期計畫將探討含裂紋之磁電彈材料受動力負載之暫態效應與裂紋擴展問 題。第一年擬先研究含半無窮長裂紋之磁電彈材料受反平面機械點載荷之二維暫態問題,且假設當裂 紋尖端之應力強度因子到達臨界值時,裂紋會以等速度向前擴展,將求得兩次拉普拉斯轉換域下之全 場解,再利用Cagniard 方法來求得應力強度因子之時域解析解。而第二年擬解析含有限長裂紋之磁電 彈單層板於上、下表面承受均佈機械、電位移與磁感應載荷之暫態響應,本計畫同樣擬先求得拉普拉 斯轉換域中之應力強度因子與能量釋放率之解,接著做數值逆轉換以求得暫態時域解。最後,並將對 各年度之所有結果與相關文獻作詳細的比較與討論。
    Relation: 含預裂紋之磁電彈材料受機電磁動力載荷之裂紋擴展問題研究
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Research Paper

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