Abstract: Based on analysis on the local structure and the hardness of weldbonded joints, a computational model is established. At the same time, discussions are made on a typical load-displacement curve of weldbonded joints in tensile shear test. Using the model established, stress fields of the resistance spot welded joints and two types of weldbonded joints which made by adhesives with different elastic modulus have been computed by finite element method. Results confirm the validity of the computational model in modeling the weldbonded joints.

Key words: Computational model, Finite element method, Stress field, Weldbonded joint