acum 2016 - simulation conference · acum 2016 . long-term reliability: munich 1970 2 eth zürich -...
TRANSCRIPT
ACUM 2016
Long-term reliability: Munich 1970
2 ETH Zürich - Dr. A. Winistörfer,
Materialwissenschaft, 327-0610-00L Verbundwerkstoffe
Summer Olympics 1972
Carbon loops
Marenco Rotorblades
America’s Cup 2010 – Alinghi 5
2500 t cable with ball termination
Contact
Frictional contact Model stick-slip transition
P: normal pressure COHE: Cohesive limit (default=0) TAUMAX: Maximal friction stress (default =1e20) m: friction coefficient
Results along this path
STRESS COMPONENTS
S11 along the path
S22
S33
Shear
Failure criteria (Max Stress vs Puck)
Puck Fiber Criterium vs Friction Coefficient
Puck Matrix Criterium vs Friction Coefficient
MAXIMAL FRICTIONAL STRESS (TAUMAX)
Max Stress Criterium vs Max Friction Stress
Puck Matrix Criterium vs Max Friction Stress
Conclusions
• The modelling of Complex Composite components consisting of adhesively bonded parts and inserts results in many cases in non-conservative solutions.
• Considering realistic frictional interface properties is costly but often important to determine the safety of the structure
• Software has improved dramatically over the years