Robustness Design to Avoid Noise on Exterior Handle System 2019-36-0137
Squeak and rattle are two undesirable occurrences during component operation and during vehicle driving condition, resulting in one of the top complains from costumers. One common grievance could happen during the user exterior handle operation and during side door closing. The exterior handle system during the operation could generate a squeak between interface parts, if materials and geometric tolerances was not been carefully designed. Also, vibration generated during door closing effort, might generate squeak between parts since the reinforcement for exterior handle touches the outer sheet metal internally. For this reason several guidelines might be included to avoid potential noise condition for this system during vehicle lifetime as correct material reduce friction between parts, taking into consideration the geometric condition between parts. Plus, coupling system on handles two pieces should also be evaluated to avoid squeak during use. Not less important, if required anti-shock material system may be applied to eliminate a clash produced between parts during excessive vibration. It is extremely important to evaluate the environment that the vehicle will be exposed since the correct material application also depend on this factor. Design parameters as materials used to produce parts, dimension geometric data and a robust technique of attachment must be analyzed. Correct material selection and tools like Dimensional Variation Analysis may be taken to identify and optimize the design to avoid noise and minimize cost.
Citation: Demori, D., Magalhães, J., Gonçalves, C., and Santos, H., "Robustness Design to Avoid Noise on Exterior Handle System," SAE Technical Paper 2019-36-0137, 2020. Download Citation
Douglas Demori, Júlio Magalhães, Cristiane Carla Gonçalves, Helano Santos