面向自然网格有限元模型的截面属性获取方法

By managing the cross-sectional data of the natural mesh finite element model through tree-shaped cross-section components, the problem of cumbersome and error-prone cross-section property acquisition in the existing technology is solved, and fast and accurate cross-section property acquisition and model updating are achieved, thereby improving design efficiency and quality.

CN115659734BActive Publication Date: 2026-07-17AVIC CHENGFEI COMML AIRCRAFT COMPANY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AVIC CHENGFEI COMML AIRCRAFT COMPANY
Filing Date
2022-10-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot instantly associate structural component names with corresponding section component names when acquiring 1D element section properties of natural mesh finite element models. The process is cumbersome and relies on manual labor, resulting in long acquisition cycles and a high risk of errors, which affects model quality and design efficiency.

Method used

The cross-sectional data of structural components is managed using a tree-shaped cross-section component. The cross-sectional data is acquired and saved through a 3D assembly model. The tree-shaped cross-section component is established, including the calculation of curved surface patches of frame parts and skin parts. The center of gravity and moment of inertia and other attributes are automatically calculated, reducing manual intervention and rule judgment.

Benefits of technology

It enables rapid and accurate acquisition and updating of structural component cross-sectional properties, reduces data management difficulty, reduces human error, and improves design iteration efficiency and model quality.

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Abstract

本发明涉及模型设计领域,为了便于自适应获取1D单元截面属性,提供了一种面向自然网格有限元模型的截面属性获取方法,包括:步骤1、确定用于自然网格有限元模型建模的三维装配模型;步骤2、基于三维装配模型建立树形截面组件,所述树形截面组件按层级存储、管理装配下结构件的截面数据;具体包括:步骤21、选定待获取属性的结构件并识别其对应的图号,基于图号建立装配截面组件;步骤22、在步骤21建立的装配截面组件下分别建立结构件截面组件,所述结构件截面组件包括框零件截面组件和蒙皮截面组件;步骤3、在三维装配模型上获取结构件截面数据并将其保存至对应结构件截面组件中。采用上述方式便于自适应获取1D单元截面属性。
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