A new kind of rectangle flat-shell element, GCTTRS24, for thick and thin shells was constructed.

构造了一种新的厚壳和薄壳通用的矩形平板壳元gcttrs24。

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The structural analysis is based on a quadrilateral flat-shell element and an updated Lagrange (ul) formulation, which can be employed to model geometric nonlinearities arising from large deflections.

结构部分以四边形平板壳元为基础，采用更新的拉格朗日(UL)方法分析结构大变形引起的几何非线性问题。

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This paper deals with the elastoplastic problems of the flat shell strip using material nonlinear finite strip method instead of the traditional solution of Beam Theory.

文章突破传统的梁理论法，应用材料非线性有限条法对平面壳条的弹塑性问题进行分析。

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Almost everyone seems to love Cathay Pacific for its smooth service and fantastic Hong Kong hub, but with an 81-inch-long first class bed, flat beds in business class, and shell seats in economy (meaning that even if the person in front of you reclines, their chair-back does not), Cathay's a particularly comfortable option for those who value their personal space.

BBC: Smooth skies: The world's best airlines

"How the sound reflects off this reflecting surface with this composite object on it - which is pretty big and has a cloaking shell on it - really reflects... just like a flat surface does, " Dr Cummer said.

BBC: Acoustic 'cloaking device' shields objects from sound