一种飞行器气动-结构耦合数据传递优化方法和系统

By constructing kd-trees and using adaptive parameter optimization methods, the problem of load distribution uniformity in aircraft structural design is solved, and the numerical robustness and engineering applicability of load transfer are improved. This method is applicable to the structural optimization of large aircraft and multidisciplinary design optimization.

CN122020866BActive Publication Date: 2026-07-17ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Filing Date
2026-04-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to quantitatively evaluate and control the uniformity of load distribution in aircraft structural design. The MELD method lacks geometric adaptability, RBF sampling acceleration can easily lead to extreme load concentration, and parameter optimization is highly dependent on experience, making it difficult to meet the engineering requirements of complex working conditions and variable geometric configurations.

Method used

A kd-tree is constructed based on aircraft geometry data. The aerodynamic-structural gap scale and grid spacing scale are calculated through k-nearest neighbor queries to determine the adaptive neighborhood and kernel width. Statistical indicators such as Gini coefficient, p95/p50 and standard deviation are introduced to optimize the uniformity of load distribution and maintain the consistency of force conservation and virtual work in the traditional MELD method.

Benefits of technology

It significantly improves the spatial uniformity of the load field and the smoothness of the displacement field on the structural side, enhances the numerical robustness and engineering applicability of the load transfer process, reduces the cost of parameter tuning, and is suitable for structural optimization of large aircraft and multidisciplinary design optimization.

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Abstract

本发明属于飞行器气动 / 结构设计技术领域，公开了一种飞行器气动‑结构耦合数据传递优化方法和系统，包括根据初始结构网格节点坐标构建k‑d树，利用k近邻查询计算气动‑结构间隙尺度和结构网格间距尺度，确定自适应邻域和自适应核宽；进行载荷‑位移传递得到结构网格节点载荷和气动网格节点位移；根据本轮得到的结构网格节点载荷，若载荷分布均匀性达标则变形气动网格节点坐标，并进行本轮结构位移和气动载荷求解；否则重新确定自适应邻域和自适应核宽，直至本轮载荷分布均匀性达标；返回开始新一轮迭代，直至达到迭代结束条件。本发明显著改善了结构侧载荷场的空间均匀性与位移场的光滑性，提高了载荷传递过程的数值稳健性和工程适用性。
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