Dynamic stability of different kinds of sandwich plates using third order shear deformation theory

In this paper dynamic buckling of different kinds of sandwich plates under harmonic axial load is analyzed by using combination of numerical finite strip analysis and Bolotin's solution which offer a kind of method to find the regions of dynamic instability for dynamic stability of plates. The sandwich plates which are considered here consist of homogeneous core sandwich plates, functionally graded sandwich plates, trapezoidal corrugated core sandwich plates, Z and C form corrugated core sandwich plates and truss core sandwich plates. Third order shear deformation theory is used as numerical method to study stability regions of sandwich plates. The effect of damping is neglected and the effect of length to thickness ratio, different boundary conditions, number of face sheet layers and different geometry and material properties of core is studied. According to the results the dynamic buckling should also be investigated in sandwich plate. Also, according to the results, it is observed that the finite strip method has an acceptable accuracy in investigating the dynamic buckling of sandwich plates.

Automated summary

In this paper, the dynamic buckling of different types of sandwich plates under harmonic axial load is analyzed using numerical finite strip analysis and Bolotin's solution. The results indicate the importance of investigating the dynamic buckling of sandwich plates, and the finite strip method shows acceptable accuracy in this field.