Scholarlink

<p>The use of rigid elements in dynamic modeling fails to accurately represent the real characteristics of weld seams, compromising the precision of finite element analysis. To address this limitation, a dynamic modeling method using common shell elements and mesh optimization is proposed. This approach simulates WS properties using actual material and thickness attributes, while mesh node merging simplifies the shell element modeling process. A flexible interface shell element is introduced to enhance mesh congruency and ensure high-quality meshing in the weld region. A welded thin-walled shell was used as a case study. Dynamic models based on both rigid and shell elements were constructed, followed by simulation and experimental validation. The proposed method’s predicted frequency response function closely matched experimental results. Compared to existing methods, it achieved higher accuracy in predicting natural frequencies, with an average relative error of 2.51% across the first 10 orders. Peak and trough amplitudes also aligned well with experimental data, and the dispersion in the first 10 acceleration amplitudes was reduced by up to 36.42%. This method enhances the simulation accuracy of welded thin-walled structures and provides valuable theoretical support for applications such as vibration prediction, structural optimization, and manufacturing process improvement.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Novel weld seam dynamics modeling scheme using a common shell element

  • 期刊论文

  • 发表日期：

    2025年11月25日

查看全文
  • Junsong Guo,
  • Zhaowei Xiang,
  • Jinghua Ma,
  • Yingzhe Kan,
  • Qin Yin

摘要

The use of rigid elements in dynamic modeling fails to accurately represent the real characteristics of weld seams, compromising the precision of finite element analysis. To address this limitation, a dynamic modeling method using common shell elements and mesh optimization is proposed. This approach simulates WS properties using actual material and thickness attributes, while mesh node merging simplifies the shell element modeling process. A flexible interface shell element is introduced to enhance mesh congruency and ensure high-quality meshing in the weld region. A welded thin-walled shell was used as a case study. Dynamic models based on both rigid and shell elements were constructed, followed by simulation and experimental validation. The proposed method’s predicted frequency response function closely matched experimental results. Compared to existing methods, it achieved higher accuracy in predicting natural frequencies, with an average relative error of 2.51% across the first 10 orders. Peak and trough amplitudes also aligned well with experimental data, and the dispersion in the first 10 acceleration amplitudes was reduced by up to 36.42%. This method enhances the simulation accuracy of welded thin-walled structures and provides valuable theoretical support for applications such as vibration prediction, structural optimization, and manufacturing process improvement.