LARGE-AMPLITUDE FREE-VIBRATIONS OF CYLINDRICAL-SHELL ON PASTERNAK FOUNDATIONS

A large amplitude free vibration analysis of non-circular cylindrical shells on Pasternak foundations has been carried out using a new appro ach due to Sinharay and Banerjee. A modified energy expression for der iving the differential equations for a cylindrical shell on Pasternak foundations is used. Investigations are made for both the movably clam ped as well as the immovably clamped edge conditions and it is noticed that even large changes in the values of non-dimensional foundation p arameters do not have a significant effect on the frequency-amplitude relationship.