| 摘要 |
<p>A spot weld fracture analysis method for a spot weld portion of three or more mutually superimposed plates (1, 2, 3) that are spot-welded at a common welding point (X) comprises an analysis step of executing an analysis by using a finite element model in which each plate is modeled by shell elements (S1, S2, S3), and the shell elements corresponding to a spot weld point position of each plate are individually interconnected via beam elements (B1, B2), and a prediction step of finding an element force (Fa, Fs, M) of a beam element that acts on a shell element relevant to a middle plate (2) from a difference (Fa2-Fal, Fs2-Fs4, M2-M1) between the element forces of two beam elements connected to the shell element on a basis of the analysis result, and predicting a possibility of fracture of a spot weld between the middle plate (2) and an adjacent plate (1, 3) by using the difference element force found from the difference.
</p> |
