From this study , in the case of the stiffness of the spring with zero found interesting behavior is what buckling in the second (secondary buckling) after the first order buckling (primary buckling). Which makes the elastic force has increased. In the case of the stiffness of the springs is less between 0 - 1 found some elastic price can support increased. And the comparative study of the shape of the elastic price from the calculation results and experiment are consistent as well.