The invention provides a
composite material skin isogeometric modeling method considering micro-pores, which comprises the following steps: obtaining internal characteristics of a
composite material skin through an SEM
scanning electron microscope, and establishing parameterized unit
cell microstructure units according to the characteristics; determining a
skin deformation area, constructing a constitutive matrix based on different components in the
composite material, obtaining and endowing defined material attributes, and obtaining different
unit mass matrixes and local stiffness matrixes in the area; and filling into the macroscopic overall matrix through an isogeometric mapping strategy, carrying out inverse mapping fitting on a
skin appearance structure, and carrying out applied load calculation. According to the method provided by the invention, through an
isogeometric analysis method, three-dimensional curved surface dimension reduction
processing is realized, and the calculation cost is reduced; meanwhile, a parameterized microscopic unit is considered to ensure the accuracy of modeling; and the
mechanical property of the composite material skin is really simulated. The method is suitable for the structure elasticoplastic deformation state that the skin bears large load,
large deformation and the like, and calculation operation is easy and convenient.