Question

What is geometric nonlinearity and material nonlinearity?

Answer 1

geometric nonlinearity

load deformation behavior means how the material behaves (deforms/ fails or resists) during the load variation. Basically, geometrical nonlinearity can be defined for extremely large deformations where the relation between displacement and strain isnonlinear.

metrial nonlinearity

Material nonlinearity is associated with the inelastic behavior of a component or system. Inelastic behavior may be characterized by a force-deformation (F-D) relationship, also known as a backbone curve, which measures strength against translational or rotational deformation.