COUPLED DYNAMIC INSTABILITY OF THIN-WALLED STRUCTURAL SYSTEMS

The dynamics of thin-walled structural systems are presented for both the pre- and the post-buckling states. The influence of the coupling e ffect of axial compression and initial imperfection on the dynamical r esponse of columns, plates and cylindrical shells is discussed. The th eoretical procedure used to study the subject is presented, together w ith illustrative examples. The use of the results obtained for the pre diction of buckling loads of cylindrical shells by means of nondestruc tive vibration tests is also presented. The implications of the result s on the design of thin-walled systems is discussed. The work is done in the scope of the elastic stability, and damping is not included in the analysis.