The free vibration of three-layer nonhomogeneous orthotropic rectangular plates on an elastic foundation
This thesis is devoted to investigation of problems of free vibration of three-layer rectangular plates on an elastic foundation which layers are made of various continuously nonhomogeneous orthotropic materials. For the elastic foundation is accepted Winkler's model and assumed that the hypothesis of Kirchhoff-Laws is valid for every thickness element of plates is. As special case of fixed hinged ends of plate is solved and the formula for partial frequency was obtained.