The bending stiffness of elastoplastic member is product of tangent elastic modulus of material and inertia moment of the section.
2
依据平板抗弯刚度公式，提出等效惯性矩的思想，构造了波纹厚板新的第二主向刚度公式。
According to bending stiffness formula of the flat plate, the idea of equivalent inertia moment is proposed, which constitutes a new second main stiffness formula for corrugated plate.
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