| Summary: | The laser spot weld is widely used to join automotive structural components due to the advantages of being inexpensive and more efficient. However, developing a reliable FE model of a laser spot weld for investigating a structure's modal parameters is very challenging. A repeated assessment of the welded joint model can significantly affect the efficiency of the finite element method, especially for a large complex structure that usually consists of huge numbers of degrees of freedom. This paper presents a wave-based substructuring method to speed up a modal parameters analysis of a laser spot welded structure. A reduced model is developed based on the wave-based substructuring scheme and compared with the full finite element model in computational time and accuracy. It was found that the proposed scheme was able to reduce the computational time of a modal parameters analysis significantly. The proposed scheme may provide advantages for research requiring high computational analysis. © 2022 Author(s).
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