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i)Oberst横梁法如图4-6-90所示,在上面呈凸起那样弯曲变形时,外表面被拉伸而内表面被压缩。将针对这种变形的复数弯曲刚度E*I由金属横梁的弯曲刚度E1I1进行无量纲化表示的Oberst
i) The Oberst Beam Method As shown in Figs. 4-6-90, the outer surface is stretched while the inner surface is compressed when the upper surface is convexly deformed. Oberst, which dimensionlessly represents the complex bending stiffness E * I for such a deformation from the bending stiffness E1I1 of the metal cross member