Cylindrical shell reinforcement structure optimization method and device, computer and storage medium

Abstract

The embodiment of the invention discloses a cylindrical shell reinforcement structure optimization method and device, a computer and a storage medium. A cylindrical shell is mapped into a mapping flat plate, a real rib component on the cylindrical shell is mapped into a mapping rib component, end coordinates of the mapping rib component and the thickness of the real rib component serve as design variables, and a gradient type optimization solver based on shape sensitivity is used for optimizing the thickness of the mapping rib component. An optimization column formula with volume constraint and other constraints is solved, the optimization distribution of a real rib component and the optimization structure of the cylindrical shell reinforced structure are obtained, the optimization process does not depend on background grids, the number of design variables is greatly reduced, and the calculation efficiency is improved; the optimization structure comprises clear size and shape parameter information of a real rib component, can be directly imported into a CAD / CAE system, does not need complicated manual identification and post-processing processes, is convenient to export an engineering strength analysis report to solve engineering problems, and improves the optimization and working efficiency on the whole.

Description

technical field [0001] The invention relates to the technical field of mechanical structures, in particular to an optimization method, a device, a computer and a storage medium for a reinforced structure of a cylindrical shell. Background technique [0002] Cylindrical shell structures are widely used in automobiles, ships, aerospace and other fields due to their high bearing efficiency and light weight. In order to improve the load-bearing performance of cylindrical shell structures, in the past few decades, many experts and scholars have developed several methods to analyze and enhance its strength, stiffness, stability, etc. Among these methods, the use of reinforced structure design is one of the most effective and cost-effective ways to improve its performance, and the strength, stiffness and dynamic performance of cylindrical shell reinforced structures are largely determined by the size, shape and layout, so how to reasonably lay reinforcement ribs on the cylindrical...

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Problems solved by technology

[0004] However, using the above-mentioned implicit topology optimization method, the geometric description of ribs depends on the pixel units or nodes of the implicit structure, without explicit geometric information, it cannot Rapid modeling and optimization solution, it is difficult to achieve effective control or constraint on the rib size, resulting in the problem of many design variables and a large amount of calculation

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