Simulation and Validation of an Incremental Bending Process for Cylindrical Fuselage Components

IF 2.1 3区工程技术 Q2 ENGINEERING, AEROSPACE

Aerospace Pub Date : 2023-12-24 DOI:10.3390/aerospace11010014

Jan Jepkens, P. Müller, H. Wester, S. Hübner, Simon Wehrmann, Bernd-Arno Behrens

引用次数: 0

Abstract

In the aviation industry, a large number of processes are not digitalised. Simultaneously, many special processes are used in production, such as incremental bending. In order to model and efficiently design multi-stage processes with methods such as FEM, automation and linking of the individual simulations are necessary. This paper therefore presents a method for automatically simulating and evaluating a complete incremental bending process with 24 strokes in LS-Dyna using a Python framework with cfiles. The final validation of the force–displacement relationships and inner radii of the generated scaled fuselage shell show high prediction accuracies of about 90%. Thus, the presented methodology enables a FEM-based process design of incremental bending in the aviation industry.

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圆柱形机身部件增量式弯曲工艺的模拟与验证

在航空工业中，有大量工序没有实现数字化。同时，生产中还使用了许多特殊工艺，如增量弯曲。为了使用有限元等方法对多阶段工艺进行建模和有效设计，必须实现自动化并将各个模拟连接起来。因此，本文介绍了一种方法，利用带有 cfiles 的 Python 框架，在 LS-Dyna 中自动模拟和评估包含 24 个冲程的完整增量弯曲过程。对生成的缩放机身外壳的力-位移关系和内半径的最终验证显示，预测准确率高达约 90%。因此，所介绍的方法可用于航空工业中基于有限元的增量弯曲工艺设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerospace ENGINEERING, AEROSPACE-

CiteScore

3.40

自引率

23.10%

发文量

661

审稿时长

6 weeks

期刊介绍： Aerospace is a multidisciplinary science inviting submissions on, but not limited to, the following subject areas: aerodynamics computational fluid dynamics fluid-structure interaction flight mechanics plasmas research instrumentation test facilities environment material science structural analysis thermophysics and heat transfer thermal-structure interaction aeroacoustics optics electromagnetism and radar propulsion power generation and conversion fuels and propellants combustion multidisciplinary design optimization software engineering data analysis signal and image processing artificial intelligence aerospace vehicles'' operation, control and maintenance risk and reliability human factors human-automation interaction airline operations and management air traffic management airport design meteorology space exploration multi-physics interaction.