What is the relationship between aspect ratio and deflection?

1. Deflection is the amount of deformation of the loaded member, that is, its displacement value.
2. “The length to slenderness ratio is used to express the stiffness of axially loaded members” The length to slenderness ratio should be the nature of the material.Any member has the nature of the axial component stiffness, can be measured by the length of the slenderness ratio.
3. deflection and the length of the slenderness ratio is a completely different concept.The length to slenderness ratio is the ratio of the calculated length of the bar to the radius of gyration of the section.Deflection is the value of the displacement of a member at a certain point after the force.