FINITE ELEMENT MODELING OF ARC WELDED JOINTS
Keywords:
Modal analysis, finite element. correlation. welded joint, model updatingAbstract
In the past. researchers did not consider welded j oints in their finite element
models. This could giw large discrepancies to the dynam ic characteristics ofthe
strocture and consequently would lead to inaccuracies in their predicted results.
This paper attempts to presen t an appropriate way to model welded joints in a
structure using the finite element method. First, two single-plate were developed
in l-dimensional finite element model and then were validated using modal
analysis. The nm plates were joined together to form a single T-joint simple
struc ture that considered arc-welded joints. Dynamic characteristics ofthe T-jomt
structure were determined by finite element analysis and experimental modal
analysis and the predicted results were then compared with the measured data.
Model updating was performed in order to increase accuracy of the predicted
results. Finally. comparison ofdynamic characteristics ofthe T-joint were made
between rigid joints and arc-welded joints.
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