Dynamic evolution rate BESO topological optimization method based on arc tangent and application thereof
A technology of topology optimization and evolution rate, which is applied in special data processing applications, instruments, calculations, etc., can solve the problems of increased number of optimization iteration steps, reduced calculation efficiency of the overall optimization process, and low evolution rate, so as to save iteration time and optimize The structure is accurate and reliable, and the effect of saving iteration steps
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[0042] The invention discloses a BESO topology optimization method based on arctangent dynamic evolution rate, such as figure 1 shown, including:
[0043] Step S1 , for the basic structure that needs to be topology optimized, the finite element grid is used to discretize the design domain under given boundary and loading conditions to obtain a finite element model.
[0044] Step S2. For the finite element model, determine relevant parameters for initialization; the relevant parameters include loading conditions of the finite element model, initial properties of elements, constraint conditions, filter radius for element sensitivity blurring, and target volume for topology optimization. In this embodiment, the constraint conditions may include a frequency constraint value, a displacement constraint value and a volume ratio constraint value, wherein the volume ratio is a ratio of the volume optimized by the finite element model to the volume of the design domain.
[0045] Step S...
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