The invention discloses a method for applying deterministic
finite element software to the analysis of a simple or large-size complicated structure containing interval parameters. The method for applying the deterministic
finite element software to the analysis of the simple or large-size complicated structure containing the interval parameters comprises the following steps of (1), establishing the geometric model of the structure; (2), inputting the interval parameters of the structure; (3), selecting a
unit type, a material attribute and a boundary condition, and carrying out grid
discretization on the structure; (4), getting back data in steps (2) and (3) to construct an input file of the deterministic
finite element software; (5), running the deterministic finite element
software to generate a vertex
stiffness matrix and a vertex
load vector; (6), converting the static problem of the structure containing the interval parameters into a series of sub-models of the static problem of a structure containing deterministic parameters according to a vertex solution theorem; (7), solving the sub-models by adopting a
parallel algorithm, so as to obtain structural static responses of all the sub-models; (8), carrying out post
processing on a result to obtain the upper bounds, the lower bounds and the mid-values of the structural static responses, and carrying out result
visualization as required. By using the method for applying the deterministic finite element
software to the analysis of the simple or large-size complicated structure containing the interval parameters, a succinct and
effective method is provided for solving the interval analysis of the complicated structure.