摘要
this paper gives the resultant forces and moments strain energy and work of external forces on the basis of the deformation theory of flexible body therefore in aqcfordance with the principle of virtual displacement the energy criterion of critical lad is obtained and the equilibrium equation and boundary conditions of stability problem are derived
this paper gives the resultant forces and moments strain energy and work of external forces on the basis of the deformation theory of flexible body therefore in aqcfordance with the principle of virtual displacement the energy criterion of critical lad is obtained and the equilibrium equation and boundary conditions of stability problem are derived
