A lightweight high-performance metal structural member design method based on topology optimization

By introducing a defect risk probability field of manufacturing process and geometric features into topology optimization, dividing risk levels and constructing a multi-bearing path network, and adjusting the structure in combination with non-destructive testing data, the problem of mismatch between topology optimization results and manufacturing defect distribution is solved, and the adaptability of design results is improved.

CN122413801APending Publication Date: 2026-07-17KUNSHA KEMO PRECISION MACHINE

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUNSHA KEMO PRECISION MACHINE
Filing Date
2026-04-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing topology optimization methods fail to effectively consider the actual distribution of manufacturing defects during the design process, resulting in poor adaptability between the design results and the actual manufacturing process.

Method used

In the topology optimization process, a spatial defect risk probability field based on manufacturing process parameters and geometric features is introduced to divide regions with different risk levels. Differentiated material evolution rules are adopted to identify and decompose structural load-bearing paths, construct a multi-load-bearing path network, and make local adjustments in combination with non-destructive testing data.

Benefits of technology

It improves the matching between topology optimization results and manufacturing defect distribution, reduces the deviation between design results and actual manufacturing process, and enhances the adaptability of design results in engineering applications.

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Abstract

本发明涉及金属结构件设计技术领域,尤其涉及一种基于拓扑优化的轻量化高性能金属结构件设计方法,包括:在建立有限元模型并确定多工况载荷条件的基础上,引入制造工艺参数和几何特征构建空间缺陷风险概率场,并将其映射至设计空间;在拓扑优化迭代过程中,根据缺陷风险等级对设计空间进行分区,采用差异化的材料演化规则控制结构材料分布,并通过承载路径识别与连通分析构建多承载路径候选结构,对拓扑优化结果进行参数化几何重构,并在关键承载区域设置几何可达性约束;结合无损检测获得的缺陷数据对缺陷风险概率场进行更新,对承载路径结构进行局部几何调整。从而兼顾制造缺陷特征与工程应用需求。
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