Hohe, J.J.HoheLibrescu, L.L.LibrescuOh, S.Y.S.Y.Oh2022-03-102022-03-102005https://publica.fraunhofer.de/handle/publica/35066110.1007/1-4020-3848-8_53The present study is concerned with the analysis of the transient response of softcore sandwich structures in the postbuckling range using a higher-order geometrically nonlinear shell model including the transverse core compressibility. The transverse compressibility results in the development of a chaotic vibration with unpredictable wrinkling amplitudes and has significant effects on the eigenfrequency.en620conference paper