NONLINEAR BENDING OF BIMODULOUS PANEL ALUMINUM FOAM CORE CIRCULAR LAMINATED PLATE

The static equilibrium equation of a bimodulus panel aluminum foam core circular laminated plate under a uniformly distributed load was established by using elastic mechanics theory. The location of the neutral plane in the bimodulus panel aluminum foam core circular laminated plate was determined by utilization of the static equilibrium equation. Taking shear deformation into consideration, it was studied that the axisymmetric nonlinear bending of bimodulous panel aluminum foam core circular laminated plate with energy method, and the relation expression between the central deflection of the circular laminated plate and a uniformly distributed load was obtained. Through the FEM analysis of a circular laminated plate, the correctness of the method was verified. The numerical example shows that the nonlinear bending calculation of a bimodulus panel aluminum foam core circular laminated plate may as well not apply classical elastic theory with same elastic modulus, and that it should use elastic theory with different elastic moduli in tension and compression.