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

doi:10.3901/JME.2023.14.064

Abstract

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

CLC Number:

TG404

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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