NONLINEAR SPLINE FINITE STRIP METHOD AND ITS APPLICATIONS

Based on the total Lagrangian description,a spline finite strip method for problems of large elastoplaslic deflection is presented in the paper by using the principle of virtual work. The method is used to analyze plates,shells, thin-walled structures and members of geometric and material nonlinearity. The problems of arbitrary boundary conditions and loading patternscan be analyzed. Both the influence of initial imperfections and plastic development in the depth direction can be taken into accouit. The numerical examples show that the method possesses the advantages of less compulation, good continuity , high accuracy and widespread applicability.