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.
