All roads lead to Roma.

A space displacement model of flat shell element is constructed by using unit width curve strip in length and breadth.

用单位纵横向曲条条带法构造了扁壳单元的空间位移模式，依据拖带坐标描述法和S-R分解定理，导出了扁壳结构几何非线性分析的有限单元U。