抄録
In analyses of buckling and geometrical nonliner buckling behavior of structures which deform largely, tangent stiffness matrix and geometric stiffness matrix play an important role. This paper shows that a general form of the geometric stiffness is derived from differentiating two shape matrices, the connection matrix and the equilibrium matrix, with respect to any joint displacement. When the general equation mentioned above is used, even the buckling analysis and the finite displacement analysis of frames costituting of arbitary curved member and rigid joints such as arch structures can be possible.
