考虑各向异性的WAAM钢构件线元模拟的精细化fe截面分析

IF 4.3 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-09-19 DOI:10.1016/j.istruc.2025.110236

Hao-Yi Zhang , An-Rui Liang , Si-Wei Liu , Yao-Peng Liu , Siu-Lai Chan

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引用次数: 0

摘要

电弧增材制造（WAAM）已经成为制造大型3d打印钢结构的一种有前途的技术。然而，目前基于线元的钢结构二阶分析方法未能考虑到WAAM固有的材料各向异性，限制了WAAM的充分发展潜力。本研究通过重新制定线元素中使用的横截面特性来解决这一限制，并结合了考虑印刷方向影响的各向异性材料模型。采用二维有限元分析（FEA）对截面特性进行数值求解，然后将其实现为7自由度（DOF） Timoshenko线元。通过与复杂有限元分析（SFEA）基准结果的比较，验证了该方法的有效性。本研究提供了一种新的方法来准确地模拟WAAM钢构件的二阶分析，该方法已被纳入MSASect2软件中，用于研究和教育目的。

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Refined FE-based cross-section analysis for line element simulation of WAAM steel members considering anisotropy

Wire-arc additive manufacturing (WAAM) has emerged as a promising technique for fabricating large-scale 3D-printed steel structures. However, the development of its full potential is constrained by the current line element-based second-order analysis method for steel structures, which fails to account for the material anisotropy inherent in WAAM. This study addresses this limitation by reformulating the cross-sectional properties utilized in line elements, incorporating an anisotropic material model that accounts for the effect of the printing direction. A 2D finite element analysis (FEA) is employed for numerical solutions of the cross-sectional properties, which are then implemented into a 7-degrees-of-freedom (DOF) Timoshenko line element. The proposed method is validated through comparisons with benchmark results from sophisticated finite element analyses (SFEA). This research provides a novel approach to accurately model WAAM steel members in second-order analysis, which has been incorporated into the MSASect2 software for both research and educational purposes.

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来源期刊

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.