| 摘要 |
PROBLEM TO BE SOLVED: To provide an analysis method for a welded structure and an analysis device for the welded structure which can estimate welding deformation and the residual stress with further higher accuracy when the welding deformation and the residual stress of the welded structure are analyzed by using a finite element method. SOLUTION: The analysis method for the welded structure has a step 2 of setting welding conditions which sets the type of the welding of a weld line and heat input conditions of a welding temperature, a step 3 of dividing the set weld line to weld line elements composed of an element unit of an FEM model, a step 6 of calculating an inherent strain distribution determined corresponding to the type of the welding, a heat input amount, and the distance from the weld line regarding individual elements constituting a finite element model, a step 8 of converting the calculated inherent strain of the individual elements to at least either of the coordinate systems of the entire coordinate system of the welded structure and a local coordinate system of the element, and a step 9 of preparing FEM analysis data for imparting the inherent strain, to which coordinate conversion is executed, to the individual elements as a load condition. COPYRIGHT: (C)2005,JPO&NCIPI
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