Deflection Governing Equation of Constrained Buckling on Column

Abstract:

The constitutive equation of postbuckling column is derived based on large deformation postulation to describe point contact and line contact respectively.The deformation of column can be regarded as the combined deformations of different typical small columns.The angle of rotation of the middle point in typical column is introduced in the constitutive equations of different typical columns.The results show that the constitutive equations in different contact state obey the same formulation,and the contact state depends on the value of new introduced variable.

Key words:constrained buckling; large deformation; point contact; line contact; angle of cross rotation