Research on the Effect of Structural Adhesive on Mechanical Properties and Its Application in Vehicle Body Development

The influence of structural adhesive on static strength, fatigue durability and impact performance under stripping, stretching, shearing and bending conditions was studied by combining simulation and experimental verification. Taking a BIW as an example, the influence of structural adhesive on the structural performance of the body was also studied. Combined with topology optimization, less structural adhesive distribution was achieved to obtain better structural performance. On this basis, lightweight design of the body was carried out. Ultimately, a weight reduction of 11.6 kg was achieved for the BIW, with a reduction of 102 solder joints. The torsional stiffness, bending stiffness, and torsional modal frequency were significantly improved, while the bending modal frequency remained basically unchanged.