Therefore, the bending moment may cause normal stress at the axisofgravity, and the concept of "equivalent axial force" is induced.
因此弯矩在形心处要引起正应力,从而引出所谓“等效轴力”的概念。
2
When a curved beam is bending in the plane of the curvature, the neutral axisof cross section is not identical with the axisofgravity due to the influence of the initial curvature.