板架结构焊接失稳变形的预测及瞬态热拉伸消除

doi:10.3901/JME.2023.14.064

机械工程学报 ›› 2023, Vol. 59 ›› Issue (14): 64-72.doi: 10.3901/JME.2023.14.064

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板架结构焊接失稳变形的预测及瞬态热拉伸消除

易斌, 王江超

华中科技大学船舶与海洋工程学院武汉 430074

收稿日期:2022-01-29 修回日期:2022-12-15 出版日期:2023-07-20 发布日期:2023-08-16
通讯作者: 王江超(通信作者),男,1983年出生,工学博士,副教授,博士研究生导师。主要研究方向为船舶海洋结构物建造工艺力学及力学性能评估。E-mail:WJccn@hust.edu.cn
作者简介:易斌,男,1996年出生,博士研究生。主要研究方向为薄板焊接失稳变形的预测和控制。E-mail:D201980503@hust.edu.cn
基金资助:
国家自然科学基金资助项目(51609091，52071151)。

Prediction on Welding Induced Buckling of Plate Panel Structure and Its Mitigation by Transient Thermal Tensioning

YI Bin, WANG Jiangchao

School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074

Received:2022-01-29 Revised:2022-12-15 Online:2023-07-20 Published:2023-08-16

摘要/Abstract

摘要： 板架结构作为船舶或者海洋结构的典型部件，其焊接过程导致的失稳变形是困扰建造精度和生产效率的关键问题。以常见的由纵向角钢和横向T型材构成的板架结构为研究对象。首先总结出焊接过程中的典型接头，建立实体单元模型进行热-弹-塑性有限元分析获得焊接固有变形。随后将焊接固有变形作为力学载荷，加载到板架结构壳单元模型中进行特征值分析和弹性有限元分析，研究该工艺下板架结构的焊接失稳变形特征。同时通过瞬态热拉伸工艺控制板架结构的焊接失稳变形，并研究附加热源施加位置的影响。结果表明，瞬态热拉伸能够影响典型接头的固有变形，特别是减小焊接产生的纵向收缩力。合适的位置施加附加热源可以避免板架结构产生焊接失稳变形；当附加热源施加到距离立板100 mm处的底板上，板架结构没有出现波浪变形，且面外变形峰值减小了49.3%。

关键词: 板架结构, 焊接失稳变形, 固有变形, 瞬态热拉伸, 弹性分析, 特征值分析

Abstract: Plate panel structure is a typical part of ship and marine structures. Welding induced buckling in plate panel structure is a key issue, which troubles construction accuracy and production efficiency. A common plate panel structure composed of longitudinal angle steel and transverse T-section is studied. Firstly, typical joints in the welding process are summarized, and solid element models are established for thermal elastic plastic FE analysis to obtain the welding inherent deformation. Subsequently, eigenvalue analysis and elastic FE analysis are performed to investigate the characteristics of welding induced buckling of the plate panel structure under this process when the inherent deformation is loaded into the shell element model of the plate panel structure. Meanwhile, transient thermal tensioning is used to control welding induced buckling in the plate panel structure, and the influence of location of additional heat source is studied. The results show that transient thermal tensioning can influence the inherent deformation of typical joints, and significantly reduce longitudinal shrinkage force (tendon force). Welding induced buckling can be mitigated by applying the additional heat source at an appropriate location; when it is applied to the flange plate 100 mm away from web plate, the deformation with wave shape does not appear, and the peak out-of-plane deformation is reduced by 49.3%.

Key words: plate panel structure, welding induced buckling, inherent deformation, transient thermal tensioning, elastic FE analysis, eigenvalue analysis

中图分类号:

TG404

易斌, 王江超. 板架结构焊接失稳变形的预测及瞬态热拉伸消除[J]. 机械工程学报, 2023, 59(14): 64-72.

YI Bin, WANG Jiangchao. Prediction on Welding Induced Buckling of Plate Panel Structure and Its Mitigation by Transient Thermal Tensioning[J]. Journal of Mechanical Engineering, 2023, 59(14): 64-72.

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板架结构焊接失稳变形的预测及瞬态热拉伸消除

Prediction on Welding Induced Buckling of Plate Panel Structure and Its Mitigation by Transient Thermal Tensioning

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