In the process of driving, the car not only bears the static load, but also bears the uneven excitation from the road surface, the rotation of the engine and other transfer to the body parts of the alternating load. During the trial production of a newly developed model, when the testing comprehensive endurance for 45,000 km were carried out, and the testing results indicated that cracking of spot-welds occurred in the rear floor, rear beam and rear floor panel, and the rear hanging lug and rear floor panel. In this paper, based on integrated design theory on CAE/CAD, the fatigue endurance of the body structure and the multi-body dynamic analysis, the multi-working condition simulation analysis, to find the root cause of spot-welds cracking, through the optimization of structural design and spot-welds layout method, the solution to spot-welds cracking program. After the second road test, the solution is proved to be effective in solving the cracking problem of spot-welds.
Optimal Design of Rear Floor Structure Based on Cracking of Spot-Welds
Lect. Notes Electrical Eng.
2022-01-13
16 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Rear floor structure, rear casting of rear floor structure and vehicle
Europäisches Patentamt | 2023
|Eutectic Segregation and Cracking in AZ91 Friction Stir Spot Welds
SAE Technical Papers | 2007
|Eutectic Segregation and Cracking in AZ91 Friction Stir Spot Welds
British Library Conference Proceedings | 2007
|