Application of the finite element method (FEM) simulation codes allows to develop the efficient and innovative solutions for cross-ply laminate materials and structures as well as to elaborate virtual testing under various loading conditions. However to guarantee accuracy of such methodology pre-determined material properties and precise parametric model of the structure validated with physical experiments are required. The aim of present research is to determine the elastic properties of small size birch veneer specimens and use acquired numerical values as input data for simulation of plywood sandwich panel with corrugated core by FEM commercial code ANSYS. More than 250 unidirectional birch veneer specimens were tested in tension in order to asses the elastic and strength properties. The distance between the grips has been assumed constantly 100 mm and tested with loading speed of 1mm/min until the specimen failure. Specimens with different thicknesses and surface adhesive treatments have been used to observe the effect of production processes versus mechanical parameters of the birch veneer. The average unidirectional modulus of elasticity where estimated Ex = 14.8 GPa with average ultimate strength of 125MPa. FEM commercial code ANSYS v.11. has been used for computer simulation of four point bending tests of the sandwich panel. Geometrical model of the panel was created with variable cross section parameters and testing set-up mode options. The V-core plywood sandwich has been modeled by using 4-node shell element SHELL 181. It was assumed that each ply has thickness of 1.35 mm. Moreover stacking sequence of the plywood has been modeled assuming that each layer is perpendicular to the upper and lower one. Validation of the FEM analysis results have been performed using experimental tests for sandwich panels with corrugated core in 4-point bending tests according to the EN 789 (2004). Relative deformations – strains of the structure were measured using strain-gauges (produced by HBM) attached on both outer surfaces of the panel and also on corrugated core surface. The conclusion has been drawn to narrow the confidence bounds for the veneer mechanical properties once used in design of plywood sandwich panels. Acquired numerical simulation values for sandwich panel’s have been validated with the physical nature experiments. It has been demonstrated that FEM parametrical model show high compatibility with nature tests and could be successfully used for design of 3D plywood structures.