On the Weld-Induced Deformation of Thin Panels to Welding Process

摘要

It has been well appreciated that the weld-induced deformation controlrnis one of the most issues from view point of efficiency in marinernstructure production. The weld-induced deformation of thin plate blockrnis relatively more serious than thick plate block due to several reasons.rnAmong weld-induced deformation, buckling deformation due tornlongitudinal shrinkage and residual stress in weld line direction is onernof the most serious deformation types. This paper is concerned withrninvestigating the weld-induced deformation of thin panel block torndifferent stiffener type and welding process. Welding tests have beenrncarried out for fillet welding of flat bar type stiffener and C shapernchannel stiffener with changing space of the intermittent welding.rnThermo-elasto-plastic analysis has been also carried with varying thernaffecting parameters on weld-induced deformation. Results of weldingrntest and numerical simulations are compared from view point ofrnquantitative weld-induced deformation and deformed shape. Bendingrntest has been also carried out to compare the strength to change inrnwelding process.