Fatigue life estimation of clinched joints from wrought aluminium alloy
with Local Strain Approach considering cold working of joining process
- Boris Spak,
- Maximilian Schlicht,
- Karina Nowak,
- Markus Kästner,
- Pascal Froitzheim,
- Wilko Flügge,
- Peter Hantschke,
- Melanie Fiedler
Maximilian Schlicht
Fraunhofer-Einrichtung fur Grosstrukturen in der Produktionstechnik IGP
Author ProfileKarina Nowak
Fraunhofer-Einrichtung fur Grosstrukturen in der Produktionstechnik IGP
Author ProfilePascal Froitzheim
Fraunhofer-Einrichtung fur Grosstrukturen in der Produktionstechnik IGP
Author ProfileWilko Flügge
Fraunhofer-Einrichtung fur Grosstrukturen in der Produktionstechnik IGP
Author ProfileAbstract
Mechanical clinching is an ef- ficient join- ing tech- nique fre-
quently used in the au- tomotive industry to join sub- assemblies of the
car body. Dur- ing me- chanical clinching, the ma- terial in the joint
is cold worked altering the cyclic material proper- ties and affecting
the per- formance of the joint under cyclic loading. The pa- per
presents an approach for fatigue life es- timation of clinched joints
us- ing the Local Strain Approach. Numer- ical sim- ulation is utilized
to retrieve local stresses and strains in the crit- ical re- gion. Ex-
perimen- tal inves- tigation is presented to vali- date the crack ini-
tiation lo- cation and an assess- ment of the fa- tigue life estima-
tion is car- ried out.