The bending stiffness of elastoplastic member is product of tangent elastic modulus of material and inertia moment of the section.

抗弯刚度的概念是材料切线模量和截面对中和轴的惯性矩的乘积。

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Based on shearing stress Theorem, we know that the shearing stress direction of all the spots on the edge of circular cross-section should be tangent to the circle.

由切应力互等定理可知，在截面边缘上各点处切应力方向必与圆周相切。

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Shade the resulting surfaces in tangent continuity is not good enough all over the surface create more section along the pillar to guide more precisely the surface creation.

阴影所产生的表面相切的连续性不够好各地创造更多的表面沿节的支柱，以指导更精确的表面创造。

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