A basic study on buckling evaluation method for plate structures

A buckling evaluation method without buckling tests or simulations for plate structures with corner dimension was proposed. The buckling strength is given as the product of Euler’s buckling force and buckling coefficient. In the previous study, a buckling coefficient for flat plates was derived, and an evaluation method for that was proposed. In this study, we extended the buckling coefficient for the flat plates to that for plates with corner dimensions at the both ends. Next, buckling analyses were executed to solve buckling forces for the plates under the conditions of various corner dimensions, and then an effective buckling length factor was derived to predict the buckling coefficients and the buckling forces. By comparing the buckling forces between the buckling analyses and the proposed method, it was found that buckling forces of the plates can be predicted within an error of 2.48 %, and the established method is available for buckling evaluation for the plate structures with the corner dimension.