向量式DKMT厚殼元推導與模擬

NCUIR > Engineering College > Graduate Institute of Civil Engineering > Electronic Thesis & Dissertation > Item 987654321/68027

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68027

Title:	向量式DKMT厚殼元推導與模擬
Authors:	李俊彥;Lee,Jiun-yan
Contributors:	土木工程學系
Keywords:	向量式有限元素法;厚殼;厚板;Vector form intrinsic finite element method;thick shell;thick plate
Date:	2015-07-30
Issue Date:	2015-09-23 10:12:54 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究將以向量式有限元素法(VFIFE)為基礎架構，結合CST薄膜元素以及包含剪應變的DKMT厚板元素，發展VFIFE-DKMT厚殼元素。利用向量式有限元素法的運動解析概念、逆向剛體轉動以及計算變形量的方法，結合CST元素的薄膜內力以及DKMT的彎矩內力，所法展出的VFIFE-DKMT厚殼元素，擁有VFIFE可以容易計算大位移的優勢，以及DKMT元素考慮剪變形的特色，將殼元素推展到更接近真實殼結構的狀態，並同時利用Ls-Dyna模擬殼元素以及傳統連體力學解析解，來驗證本研究理論的正確性。 ;This research will develop VFIFE-DKMT thick shell element by combining constant strain triangle (CST) membrane element and discrete Kirchhoff Mindlin triangle (DKMT) thick plate element which contain shear strain effect, by using vector form intrinsic finite element method (VFIFE). By using the concept of equation of motion, inverse rigid body motion, deformation coordinates of VFIFE, also combine the membrane forces of CST element and moment of DKMT element, we can develop VFIFE-DKMT element which have advantage of easily calculating large displacement problem from VFIFE theory, and considering shear deformation from DKMT elements. It make VFIFE shell element become closer real shell structure. And we not only simulated shell elements by using finite element software (Ls-Dyna), also calculated analytical solutions to verification this elements.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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