Abstract:

The existence of the hole has a great effect on the structural strength.For the hole-edge boundary condition of the complex hole,there are some difficulties in describing it in mathematics.A great error will result from the inadequate accuracy of the establishing of boundary condition during the following calculation.In this paper,accurate boundary conditions of complex hole were presented based on the theory of function of complex variable,with the improvement of ratio of precision of the finite element modeling.The calculation of anisotropic plate with aerofoil manhole under external load was carried out.The numerical solution of hole-edge stress field was obtained.Moreover,the stress distribution of hole-edge and deformation of plate were given.

Key words: composite materials plate, finite element, stress, deformation