A novel meshless global radial basis reproducing kernel particle method
(GRB-RKPM) is established based on the global radial basis function
(GRBF) and the reproducing kernel particle method (RKPM). Subsequently,
GRB-RKPM is used to solve the elastic mechanical of bidirectional functionally
graded materials (BDFGMs). The influence of the shape parameter
, the shape
parameter
, the scale
parameter
, and
the penalty factor
on the GRB-RKPM solving the elastic mechanical of BDFGMs is analyzed, and the
optimal value is given. The effectiveness of the GRB-RKPM in solving the elastic
mechanical of BDFGMs is verified by comparing solutions calculated by the
GRB-RKPM with reference solutions calculated by the finite element method
(FEM). Compared with the RKPM, the GRB-RKPM converges faster. The
GRB-RKPM solutions are compared with the local radial basis reproducing kernel
particle method (LRB-RKPM) solutions and the RKPM solutions. It is proved that
the GRB-RKPM has higher computational accuracy. The deformation behavior
of the elastic mechanical of BDFGMs under different gradient indexes is
studied.
Keywords
meshless method, global radial basis function, reproducing
kernel particle method, bidirectional functionally graded
materials, elastic mechanical problem