In this paper,the strain of twist compression deformation is analyzed and the formulae are derived in detail,furthermore,some numerical results are given.
本文分析了压扭变形时变形体内应变情况，并给出求解真应变的公式及部分计算结果。
But in the operation of the curved box-girder, bending and torsion deformation has also been quite pronounced.
但在运营中遇到的弯箱梁弯扭变形问题也比较突出。
The paper first presents the development of skew surface CAD and the conception of NURBS,and proposes a reverse algorithm for curves and surfaces to construct Lamina skew surfaces by deriving the original 2-D skew surface data to 3-D data,improving the modelling methods and effectively enhances the design precision of such surfaces in practical production.
本文首先介绍了扭变曲面CAD在国内外的发展情况和NURBS方法的概念,通过推导曲面初始二维数据向三维数据的转换关系,提出一种将NURBS曲线曲面反求算法用于叶片曲面的构造,完成叶片的计算机建模方法,有效地提高了此类曲面在实际生产中的设计精度。