Structure topology optimization method for implementing diversified designs

Abstract

The invention relates to the field of optimal designing of engineering structures, and provides a structure topology optimization method for implementing diversified designs. The method comprises the following steps: implementing a structural concept design by virtue of structure topology optimization; proposing diversified design solution methods to obtain a plurality of concept design configurations meeting initial design requirements, comprising: introducing a weighted objective function and proposing diversity constraints, wherein the diversity constraints can be used for describing differences among the topology configurations and driving optimization to obtain a plurality of diversified configurations; evaluating the performance of each concept configuration under detailed design requirements, screening the concept design configurations meeting the design requirements, and performing detailed designing on the concept design configurations by shape optimization and parameter optimization. According to the method, a plurality of diversified initial designs can be obtained, the risk that an initial design solution which cannot meet a subsequent design requirement is forced to be abandoned is reduced, and design iteration times and design time are greatly reduced.

Description

technical field [0001] The invention relates to the field of engineering structure optimization design, in particular to a structure topology optimization method for realizing diversity design. Background technique [0002] The purpose of structural optimization design is to provide engineers with efficient, reliable, and systematic optimal structural optimization design strategies, change the traditional product design process, and seek safe and economical structural forms. The optimization-driven product design process gives product design engineers the most effective design assistance, greatly saving time and cost, and improving product performance. Structural optimization design has been widely accepted and adopted in the fields of automobiles, ships, aerospace, machinery manufacturing and so on. [0003] Structural optimization design is generally divided into three levels: size optimization, shape optimization, topology optimization. Size optimization and shape optim...

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Problems solved by technology

When entering the subsequent fine design stage, the single "optimal solution" obtained by spending

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