Free vibration of plated structures by grillage method

Abstract Free vibration of plated structures such as plates, stiffened plates and cellular structures are analysed by the grillage method. The accuracy of the method is assessed by comparing with published results and those of the finite element method. Reasonably good results are obtained by the grillage method, which is less demanding on computer time and thus reduces the cost of analysis substantially. By using the grillage method the influence of the number of stiffeners in a stiffened plate and the number of webs in a cellular structure on the vibration characteristics of plated structures is investigated.