1119 KB0 KB2022Wang, F.Xiao, S. N.Yang, B.Yang, G. W.Yang, L.Zhu, T.letnik:17številka:2str. 141-151DOI:10.14743/apem2022.2.426ISSN:1854-6250COBISSID_HOST:269292803URN:URN:NBN:SI:doc-MI4LZ4AIenFakulteta za strojništvo, Inštitut za proizvodno strojništvoAdvances in production engineering and managementequivalent structural stressFEMfinite element methodsnumerical simulationprediction methodsimulacijasimulationS-N curvespot-welded jointstočkovno varjeni spojiA method for prediction of S-N curve of spot-welded joints based on numerical simulation|Currently, ?F-N curves are often used to predict the fatigue lives of spot-welded joints, but the method for obtaining these ?F-N curves is time-consuming, laborious, and non-universal. Tensile-shear fatigue tests were performed to obtain the fatigue lives and the corresponding normalized S-N curves of spot-welded joints. Subsequently, the force acting at the spot-welded joints was obtained by extracting the force and moment of the beam element in the shell-element-based finite element model, and the equivalent structural stress at the spot-welded joint was obtained based on the equiva-lent structural stress method. Finally, the S-N curves of the spot-welded joints were fitted using the least-squares method. A comparison of the S-N curves of the spot-welded joints with those of different materials revealed that the material type had a significant influence on the S-N curve. To avoid this influence, a method for predicting the S-N curve of the spot-welded joints was proposed based on the relationship between the ratio of the ten-sile strength and that of the fatigue limit of each material. This research provides guidance for predicting the fatigue life of spot-welded joints in engineering applicationsTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Mariboru, Fakulteta za strojništvo