The invention discloses an
inertial platform residual stress release simulating method based on a finite element, which comprises the steps of: 1, modeling an initial platform entity, integrally obtaining an initial platform
entity model by applying entity drawing
software, then guiding the initial platform
entity model into finite element simulating
software; 2, modeling an air column, establishing initial platform
peripheral air into an air
column model; 3, assigning initial platform and air column material attributes, inputting the initial platform and air column material attributes according to the requirement on the finite element simulating
software; 4, modeling an initial platform and an air column
finite element grid, wherein two procedures of selecting a
unit type and dividing the grid are included; and 5,
coupling and analyzing an initial platform heat-structure, wherein two procedures of transient
heat analysis and
structure analysis are included: the transient
heat analysis is as follows: a temperature cycle stress is loaded on the outer surface of the air column so as to provide heat conditions for the
inertial platform residual stress release simulating analysis, andthe
structure analysis is as follows: an initial platform transient
heat analysis result is loaded to the heat-structure
coupling analysis to obtain a rule of releasing the
inertial platform residualstress with the temperature cycle stress.