簡易檢索 / 詳目顯示

研究生: 呂子賢
Lu, Zih-Sian
論文名稱: 受慣性力之三維疊層複材邊界元素法分析及其視窗化軟體設計
Boundary Element Method Analysis of Three-Dimensional Anisotropic Laminated Composite under Inertial Forces and Its Design of Window-based Software
指導教授: 夏育群
Shiah, Yu-Chun
學位類別: 碩士
Master
系所名稱: 工學院 - 航空太空工程學系
Department of Aeronautics & Astronautics
論文出版年: 2025
畢業學年度: 113
語文別: 中文
論文頁數: 109
中文關鍵詞: 三維疊層複材旋轉及自重效應異向性邊界奇異積分正規化
外文關鍵詞: three-dimensional laminated composites, rotational and self-weight effects, anisotropic, boundary singular integrals, regularize
相關次數: 點閱:16下載:4
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  • 本研究主旨為探討三維疊層複材在受旋轉及自重效應下之各層間應力與位移並提出針對薄層異向性和等向性材料受慣性力時有效的模擬方法。由前人所做的相關研究成果可知,薄疊層複材常因各層間應力關係造成所謂脫膠現象,且由於其厚度極小在計算過程中會形成近似奇異積分,這些問題皆導致了數值分析上出現很多的困難。因此,本論文即提出一種有效的處理方式,乃採 FG-Squircular mapping 技術將因旋轉或自重效應所產生之邊界奇異積分做正規化, 如此一來即便複材交界面僅以極薄的膠合層去接合,我們也能用劃分較粗之網格進行有效的模擬。最後,我們提出了共六種分析範例進行探討並檢驗其相關數值的準確性,而這些範例都包含了不同的材料性質、幾何形狀或邊界條件等情境,以確保所提出的模擬方法能在多種相異情況下進行精確之分析。

    The primary objective of this study is to investigate the interlaminar stresses and displacements in three-dimensional laminated composites subjected to rotational and self-weight effects, and to propose an effective simulation method applicable to both anisotropic and isotropic thin-layered materials under inertial forces. Previous research has shown that delamination phenomena often occur in thin laminated composites due to interlaminar stress interactions. Moreover, the extremely small thickness of these layers leads to the formation of nearly singular integrals during the computational process, posing significant challenges for numerical analysis.
    To address these issues, this study introduces an effective approach that utilizes the FG-Squircular mapping technique to regularize the boundary singular integrals induced by rotation or self-weight effects. With this method, even when composite interfaces are bonded using extremely thin adhesive layers, accurate simulations can still be achieved using relatively coarse mesh discretization.
    Finally, six numerical examples are presented to demonstrate and verify the accuracy of the proposed method. These examples encompass various scenarios involving different material properties, geometrical configurations, and boundary conditions, ensuring that the proposed simulation approach remains robust and precise across a wide range of cases.

    摘要 I 誌謝 X 目錄 XII 圖目錄 XIV 符號 XXIII 第一章 導論 1 1 - 1 前言 1 1 - 2 研究動機 4 1 - 3 文獻回顧 6 1 - 4 研究過程 7 第二章 理論回顧 9 2 - 1 三維異向性彈性力學中含慣性力項之邊界積分方程式 9 2 - 2 旋轉及自重效應於轉換後之邊界積分方程式 14 第三章 旋轉及自重效應之近似奇異積分正規化 16 3 - 1 引入旋轉及自重效應之近似奇異積分正規化 16 3 - 2 源點座標映射 18 第四章 視窗視窗化化軟體設計軟體設計 21 4-1 視窗化軟體視窗化軟體操作流程操作流程 22 4-2 視窗化軟體回顧視窗化軟體回顧 23 4-3 含旋轉及自重效應之視窗化軟體設計含旋轉及自重效應之視窗化軟體設計 26 第五章 範例分析 28 5-1 範例一、五層薄長方板受旋轉及自重效應 29 5-2 範例二、三層薄空心圓柱受旋轉及自重效應 38 5-3 範例三、薄空心圓塗層附著空心圓盤受旋轉及自重效應 47 5-4 範例四、 SINGLE LAP JOINT 長方薄板受旋轉及自重效應 54 5-5 範例五、 DOUBLE LAP JOINT 長方薄板受旋轉及自重效應 62 5-6 範例六、 NACA 5408 渦輪葉片受旋轉效應 72 5–7 範例分析結果討論 76 第六章 結論與未來展望 78 參考文獻 79 附錄 84

    [1]. T. Kant, K. Swaminathan, Estimation of transverse/interlaminar stresses in laminated composites—a selective review and survey of current developments, Composite Structures, 49, pp. 65–75, (2000).
    [2]. A.H. Puppo, H.A. Evensen, Interlaminar shear in laminated composites under generalized plane stress, Journal of Composite Materials, 4, pp. 204–220, (1970).
    [3]. N.J. Pagano, On the calculation of interlaminar normal stress in composite laminate, Journal of Composite Materials, 8, pp. 65–81, (1974).
    [4]. P.W. Hsu, C.T. Herakovich, Edge effects in angle-ply composite laminates, Journal of Composite Materials, 11, pp. 422–428, (1977).
    [5]. S. Tang, A. Levy, A boundary layer theory. Part II: extension of laminated finite strip, Journal of Composite Materials, 9, pp. 42–52, (1975).
    [6]. R.B. Pipes, N.J. Pagano, Interlaminar stresses in composite laminates an approximate elasticity solution, ASME Journal of Applied Mechanics, 41, pp. 668–672, (1974).
    [7]. N.J. Pagano, Stress fields in composite laminates, International Journal of Solids and Structures, 14, pp. 385–400, (1978).
    [8]. S.S. Wang, I. Choi, Boundary-layer effects in composite laminates. Part I: free-edge stress singularities, ASME Journal of Applied Mechanics, 49, pp. 541–548, (1982).
    [9]. W.-L. Yin, Free edge effects in anisotropic laminates under extension, bending and twisting. Part I: a stress-function-based variational approach, Journal of Applied Mechanics, 61, pp. 410–415, (1994).
    [10]. M.M.S. Vilar, P. Khaneh Masjedi, D.A. Hadjiloizi, Paul M. Weaver, Analytical interlaminar stresses of composite laminated beams with orthotropic tapered layers, Composite Structures, 319, 117063, (2023).
    [11]. Bin Huang, Heung Soo Kim, Ji Wang, Jianke Du, Interlaminar stress analysis of magneto-electro-elastic composite layered laminates using a stress function based iterative approach, Composites Part B: Engineering, 90, pp. 406–415, (2016).
    [12]. Ojo S.O., Weaver P.M., Efficient strong unified formulation for stress analysis of non-prismatic beam structures, Composite Structures, 272, 114190, (2021).
    [13]. Tian Z-S, Yang Q-P, Wang A-P, Three-dimensional stress analyses around cutouts in laminated composites by special hybrid finite elements, Journal of Composite Materials, 50(1), pp. 75–98, (2016). doi:10.1177/0021998315570509
    [14]. Wei Li, Yuchen Chen, Coupled higher-order layerwise mechanics and finite element formulations for laminated composite beams with active SMA layers, European Journal of Mechanics - A/Solids, 107, 105380, (2024).
    [15]. Ali Delbariani-Nejad, Amin Farrokhabadi, Mohammad Fotouhi, Finite element reliability analysis of edge delamination onset due to interlaminar stresses in composite laminates, Composite Structures, 288, 115410, (2022).
    [16]. Pedro Bührer Santana, António Joaquim Mendes Ferreira, Herbert Martins Gomes, Volnei Tita, Nonlinear finite element damage analysis of laminated shells by Carrera Unified Formulation, Composite Structures, 348, 118494, (2024).
    [17]. Y.C. Shiah, Kuo-Wei Hsu, Two-dimensional analysis of interlaminar stresses in thin anisotropic composites subjected to inertial loads by regularized boundary integral equation, Composites Part B: Engineering, 159, pp. 105–113, (2019).
    [18]. Y.C. Shiah, Shang-Yu Ye, New treatment of the Self-Weight and the Inertial Effects of Rotation for the BEM formulation of 2D Anisotropic Solids, Engineering Analysis with Boundary Elements, 73, pp. 170–180, (2016).
    [19]. Y.C. Shiah, Wen-Sheng Hwang, and Guan-Chyun Shiah, “BEM Stress Analysis for Thin Multilayered Composites Subjected to Inertial Loads,” Journal of Composite Materials, Vol. 43, No. 4, pp. 349-366, (2009).
    [20]. Y.C. Shiah, Analytical Transformation of the Volume Integral for the BEM Treating 3D Anisotropic Elastostatics Involving Body Force, Computer Methods in Applied Mechanics and Engineering, pp. 404-422, (2014).
    [21]. Scuderi Letizia, On the computation of nearly singular integrals in 3D BEM collocation, International Journal for Numerical Methods in Engineering. 74, pp. 1733–1770, (2007).
    https://doi.org/10.1002/nme.2229.
    [22]. H. Ma, N. Kamiya, A general algorithm for the numerical evaluation of nearly singular boundary integrals of various orders for two- and three-dimensional elasticity, Computational Mechanics, 29, pp. 277–288, (2002). https://doi.org/10.1007/s00466-002-0340-0.
    [23]. H. Ma, N. Kamiya, Distance transformation for the numerical evaluation of near singular boundary integrals with various kernels in boundary element method, Engineering Analysis with Boundary Elements, 26, pp. 329–339, (2002). https://doi.org/10.1016/S0955-7997(02)00004-8.
    [24]. Xianyun Qin, Jianming Zhang, Guizhong Xie, Fenglin Zhou, Guanyao Li, A general algorithm for the numerical evaluation of nearly singular integrals on 3D boundary element, Journal of Computational and Applied Mathematics,235,pp.4174–4186,(2011). https://doi.org/10.1016/j.cam.2011.03.012.
    [25]. J.C.F. Telles, A self-adaptive co-ordinates transformation for efficient numerical evaluation of general boundary element integrals, International Journal for Numerical Methods in Engineering, 24, pp. 959–973, (1987). https://doi.org/10.1002/nme.1620240509.
    [26]. X.L. Chen, Y.J. Liu, An advanced 3D boundary element method for characterizations of composite materials, Engineering Analysis with Boundary Elements, 29, pp. 513–523, (2005). https://doi.org/10.1016/j.enganabound.2004.12.013.
    [27]. K. Hayami, Variable transformations for nearly singular integrals in the boundary element method, Publications of the Research Institute for Mathematical Sciences, 41, pp. 821–842, (2005). http://DOI/10.2977/prims/1145474596.
    [28]. B.M. Johnston, P.R. Johnston, D. Elliott, A sinh transformation for evaluating two-dimensional nearly singular boundary element integrals, International Journal for Numerical Methods in Engineering, 69, pp. 1460–1479, (2007). https://doi.org/10.1002/nme.1816.
    [29]. P.R. Johnston, Application of sigmoidal transformation to weakly singular and nearly-singular boundary element integrals, International Journal for Numerical Methods in Engineering, 45, pp. 1333–1348, (1999). https://doi.org/10.1002/(SICI)1097-0207(19990810)45:10<1333::AID-NME632>3.0.CO;2-Q.
    [30]. S. Wu, On the evaluation of nearly singular kernel integrals in boundary element analysis, Numerical Methods in Engineering, 11, pp. 331–337, (1995). https://doi.org/10.1002/cnm.1640110406.
    [31]. Y.C. Shiah, Kuo-Wei Hsu, Two-dimensional analysis of interlaminar stresses in thin anisotropic composites subjected to inertial loads by regularized boundary integral equation, Composites Part B: Engineering, 159,pp.105–113,(2019). https://doi.org/10.1016/j.compositesb.2018.09.088.
    [32]. Y.C. Shiah, M.R. Hematiyan, Interlaminar stresses analysis of three-dimensional composite laminates by the boundary element method, Journal of Mechanics, 34, pp. 829–837, (2018). https://doi.org/10.1017/jmech.2018.8.
    [33]. M.G He, C.L. Tan, A self-regularization technique in boundary element method for 3-D Stress Analysis, CMES – Computer Modeling in Engineering & Sciences, 95, pp. 317–349, (2013). https://doi.org/10.3970/cmes.2013.095.315.
    [34]. B.M. Johnston, P.R. Johnston, D. Elliott, A sinh transformation for evaluating two-dimensional nearly singular boundary element integrals, International Journal for Numerical Methods in Engineering, 69, pp. 1460–1479, (2007).
    [35]. Xiaochao Li, Yu Su. Three-dimensional stress analysis of thin structures using a boundary element method with sinh transformation for nearly singular integrals, Computers and Mathematics with Applications, 72 issue 11, pp. 2773–2787, (2016).
    [36]. Fong Chamberlain, Analytical methods for squaring the disc, https://arxiv.org/pdf/1509.06344; 1-33, (2014).
    [37]. Y.C. Shiah, Jin-Jia Zhan, M.R. Hematiyan, An efficient scheme of calculating nearly singular integrals for the 3D BEM modeling of thin media, Engineering Analysis with Boundary Elements, 169, 106005, (2024).
    [38]. Y. C. Shiah, C.L. Tan, and V.G. Lee. Evaluation of Explicit-form Fundamental Solutions for Displacements and Stresses in 3D Anisotropic Elastic Solids, CMES – Computer Modeling in Engineering & Sciences, Vol. 34, No. 3, pp. 205-226, (2008).
    [39]. Y.C. Shiah and C. L. Tan, Higher-Order Green’s Function Derivatives and BEM Evaluation of Stresses at Interior Points in a 3D Generally Anisotropic Solid, CMES – Computer Modeling in Engineering & Sciences, Vol. 78, pp. 95-108, (2011).
    [40]. Y.C. Shiah, C.L. Tan, and C.Y. Wang, Efficient Computation of the Green’s Function and its Derivatives for Three-Dimensional Anisotropic Elasticity in BEM Analysis, Engineering Analysis with Boundary Elements 36, pp. 1746-1755, (2012).
    [41]. M. H. Aliabadi, The Boundary Element Method, Volume 2: Applications in Solids and Structures, Wily April, (2002). ISBN: 978-0-470-84298-0
    [42]. J.C. Lachat, J.O. Watson, Effective numerical treatment of boundary integral equations: A formulation for three-dimensional elastostatics. International Journal for Numerical Methods in Engineering, 10, pp. 991–1005, (1976). https://doi.org/10.1002/nme.1620100503.
    [43]. M. Critescu, G. Loubignac, Gaussian quadrature formulas for functions with singularities in l/r over triangles and quadrangles, in Brebbia, C.A. (Ed.), Recent Advances in the Boundary Element Method, Pentech, London, (1978).
    [44]. Andrew N. Cleland, Foundations of Nanomechanics: from solid-state theory to device applications, p.186 Springer (2013); ISBN: 9783662052877.

    下載圖示 校內:立即公開
    校外:立即公開
    QR CODE