"2003 Colloquium on Differential Equations and Applications, Maracaibo, Venezuela. Electronic Journal of Differential Equations, Conference 13, 2005, pp. 35-47. Title: A system of semilinear evolution equations with homogeneous boundary conditions for thin plates coupled with membranes Author: Jairo Hernandez (Univ. del Norte, Barranquilla, Colombia) Abstract: In this work we consider a semilinear initial boundary-value problem modelling an elastic thin plate (in the context of the so-called Kirchhoff-Love theory) coupled with an elastic membrane, regarding homogeneous boundary conditions. By means of the theory of strongly continuous semigroups of linear operators applied to abstract semilinear initial valued problems [16], we obtain existence and uniqueness of a weak solution which is defined in a suitable way. Published May 30, 2005. Math Subject Classifications: 74H20, 74H25, 74K15. Key Words: Plates, membranes, coupled structures, transmission problems, semilinear evolution equations.