Through ANSYS calculation, this article pointed out that the variable-thickness cantilever slab is not suitable for normalized form, and suggested adopting the FEM based on shell element model to analyze and calculate.

In this paper,the flexuous function w(x,y)and stress function Ψ(x,y)are selected,which consist of the trigonometrical series and polynomial expression,and the linear algebraic equa-tions are obtained solvable for rectangular cantilever thick plates under uniform surface-load.

A theoretic solution for rectangular cantilever thick plate is derived by symplectic geometry method.

The placement rule of piezosensors and piezoactuators for cantilevered plate is given,and the piezoelectric control equation based on distributed piezoelectric actuators for cantilevered plate including bending and torsion modes is derived,and the control methods can be designed using this equation.

Self-shaking and shaking control of pressing cantilever board;

The paper adopts composites layer board model to analyse functionally gradient materials cantilever board.

Aimed at the unreasonable calculation methods for cantilever slabs of concrete box girders,based on FEM and some kinds of calculation methods,a analyses is performed by sub-model technique to study the influence of several parameters,such as distortion for box girders,length and degree of slope for cantilever slabs as well as load location.