Finite Element Simulation Analysis and Experimental Study of Arc Additive Frame Structure

Qingsong LI; Lei WANG; Ning ZHAO; Xiaotian ZHANG; Lei ZHANG; Kehong WANG

doi:10.12382/bgxb.2024.0629

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Finite Element Simulation Analysis and Experimental Study of Arc Additive Frame Structure

更新时间：2025-09-05

- Finite Element Simulation Analysis and Experimental Study of Arc Additive Frame Structure
- Acta Armamentarii Vol. 46, Issue 7, Pages: 240629(2025)
- 作者机构：
  
  1. 南京理工大学材料科学与工程学院, 江苏南京 210094
  2. 特种车辆设计制造集成技术全国重点实验室, 内蒙古包头 014030
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2024.0629
  CLC：
- Received：25 July 2024，
  
  Online First：12 August 2025，
  
  Published：31 July 2025
- 稿件说明：
移动端阅览
Qingsong LI, Lei WANG, Ning ZHAO, et al. Finite Element Simulation Analysis and Experimental Study of Arc Additive Frame Structure[J]. Acta Armamentarii, 2025, 46(7): 240629.
DOI：

Qingsong LI, Lei WANG, Ning ZHAO, et al. Finite Element Simulation Analysis and Experimental Study of Arc Additive Frame Structure[J]. Acta Armamentarii, 2025, 46(7): 240629. DOI： 10.12382/bgxb.2024.0629.

摘要

利用瞬态热源、热循环曲线、全热循环、固有应变4种算法

依次对电弧增材典型框体构件变形和应力进行模拟

分析不同算法下的预测精度与计算效率。研究结果表明:瞬态热源算法预测的最大变形位置为框体顶部4个边角处

应力主要集中分布在框体拐角及顶部区域

与实验结果吻合良好

特征点变形与应力的预测精度分别为96.59%与95.01%

计算时间为326h;热循环曲线算法的预测精度与瞬态热源算法相当

但计算时间缩短至117h

预测的变形云图及应力曲线与实验结果吻合较好;相较于前两种算法

全热循环和固有应变算法对特征点变形的预测精度较低

分别为85.68%和65.86%

预测的变形云图与实验结果存在较大差异

可信度较低

但计算时间分别缩短至4h和2h

效率显著提高。

Abstract

The deformation and stress of typical additively manufactured frame components are simulated by using transient heat source algorithm

thermal cycle curve algorithm

full thermal cycle algorithm and intrinsic strain algorithm

and the prediction accuracies and calculation efficiencies of the different algorithms are analyzed.The results show that the maximum deformation position predicted by the transient heat source algorithm is the top four corners of the frame

and the stress is mainly distributed in the corners and top areas of the frame

which is in good agreement with the experimental results

and the prediction accuracies of feature point deformation and stress are 96.59% and 95.01%

respectively

and the calculation time is 326h;The prediction accuracy of the thermal cycle curve algorithm is comparable to that of the transient heat source algorithm

but the calculation time is shortened to 117h

and the predicted deformation contour and stress curve are in good agreement with the experimental results.Compared with the first two algorithms

the prediction accuracies of the full thermal cycle and intrinsic strain algorithms for feature point deformation are 85.68% and 65.86%

respectively

and the predicted deformation contour is quite different from the experimental results.The reliabilityies of the full thermal cycle and intrinsic strain algorithms are low

but their calculation times are shortened to 4h and 2h

respectively

and their efficiencies are significantly improved.

关键词

Keywords

references

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WANG L , DU S F , LI H X , et al. Investigation of deformation laws during laser beam welding of a skin skeleton structure using numerical simulation [J ] . Acta Armamentarii , 2025 , 46 ( 3 ): 240017 . (in Chinese) DOI: 10.12382/bgxb.2024.0017 http://doi.org/10.12382/bgxb.2024.0017 Titanium alloy is commonly used in the skin-skeleton structure of various aircraft rudder and wing components,which has received widespread attention in the weapons,aviation and aerospace industries.In this work,the laser welding deformation of a titanium alloy skin-skeleton structure is taken as the research object.The influence of welding sequences on welding deformation and stress is simulated and investigated using the thermal cycling method,and the welding sequences are optimized.The welding deformation and stress are significantly reduced by adding the turnover process in the welding.The results show that the peak welding stress is reduced by 27.4% from the original 1027.18MPa to 745.30MPa by prioritizing welding in the center area of the skin and adding multiple overturns during welding.The deformations at the feature points P 1 , P 2 and P 3 are decreased from the original 0.168mm,0.178mm and 0.198mm to 0.066mm,0.028mm and 0.021mm,respectively,by 60.7%,84.3% and 89.4%.The laser welding deformation of skin-skeleton structure is measured by a 3D laser scanner.Compared with the experimental results,the average error of the calculated results is 9.98%,which verifies the accuracy of the finite element model and the optimized welding sequence.

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