基于不均匀力学性能的 API-5L X80 焊接接头裂纹生长路径研究

IF 3.9 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2024-10-31 DOI:10.1016/j.istruc.2024.107713

He Xue, Rongxin Wang, Zheng Wang, Jun Wu, Xibin Hao

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引用次数: 0

摘要

本研究分析了非均质力学性能对 API-5L X80 焊接接头不同位置裂纹尖端应力应变场和裂纹生长路径的影响。首先，本文详细分析了焊接接头的非均质力学性能和微观结构。然后，开发了 ABAQUS 子程序 USDFID，以确保该区域材料力学性能的连续性变化。最后，使用扩展有限元法（XFEM）分析了焊接接头中的裂缝。研究结果表明，焊接接头的不均匀机械性能导致裂纹的生长路径向焊接金属区域偏转，并在该区域表现出最大的生长速度。

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Study on crack growth path of API-5L X80 welded joints based on inhomogeneous mechanical properties

This study analyses the effect of inhomogeneous mechanical properties on the stress-strain field of crack tips and crack growth path at different locations of API-5L X80 welded joints. First, the inhomogeneous mechanical properties and microstructure of welded joints were analyzed in detail in this paper. Then, the ABAQUS subroutine USDFID was developed to ensure the continuity variation of the mechanical properties of the material in this region. Finally, the cracks in the welded joints were analysed using the extended finite element method (XFEM). The findings demonstrate that the inhomogeneous mechanical properties of welded joints give rise to crack growth path that are deflected towards the weld metal region, exhibiting the greatest rate of growth in this region.

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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.