Bending stiffness is the coefficient relating plate curvature to bending moment. In linear thin-plate theory a transverse displacement produces a restoring load .
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Bending stiffness, often referred to as flexural stiffness, is a measure of a material's resistance to bending when a load is applied. It quantifies how much a structure or element will deform (or deflect) under a given bending moment. The concept is particularly important in engineering and materials science, especially when designing beams, structural components, and various engineering applications where bending is a primary mode of stress.