Optimization method and device of stiffened plate shell structure, computer equipment and storage medium

Abstract

The embodiment of the invention discloses an optimization method and device of a stiffened plate shell structure, computer equipment and a storage medium. The method comprises the steps of obtaining a plurality of rib assemblies located on the surface of the plate shell structure; representing each rib component based on a geometric path representation method to obtain geometric path parameters of each rib component; constructing a rib model according to the geometric path parameters; performing mesh division on the rib model and then performing finite element analysis to obtain a mechanical index of the rib model; obtaining target optimization parameters from the mechanical indexes; constructing an optimization column formula, wherein the optimization column formula comprises a target function, a constraint function, a design variable and an optimization target; inputting the optimization column formula into an optimization solver until the target function converges, and obtaining an updated target geometric path parameter; and constructing a target rib model according to the target geometric path parameters to obtain an optimized stiffened plate shell structure. According to the embodiment of the invention, the design of the stiffened plate shell based on the topological optimization of the stiffened plate shell structure of the explicit geometric parameters is realized.

Description

technical field [0001] The invention relates to the technical field of mechanical structures, in particular to an optimization method, device, computer equipment and storage medium for a stiffened plate shell structure. Background technique [0002] Plate and shell structures have been widely used in important structural components in the fields of civil engineering, automobile manufacturing, and aerospace industry due to their high load-bearing efficiency and light weight. In order to enhance the bearing capacity of the plate and shell structure, many experts and scholars have developed a variety of methods to analyze and enhance the strength, stiffness, stability, etc. of the plate and shell structure in the past few decades. The design of a stiffened plate shell structure is one of the most effective and cheapest methods to improve the mechanical properties of a plate shell structure, while the strength, stiffness and dynamic performance of a stiffened plate shell structu...

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Problems solved by technology

[0004] However, using the above-mentioned implicit topology optimization method, the geometric description of the ribs depends on the pixel units or nodes of the implicit structure, without explicit geometric information, making it difficult to achieve effective control or constraints on the rib size, resulting in design variables Many, computationally intensive problems

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