acum 2016 - simulation conference · acum 2016 . long-term reliability: munich 1970 2 eth zürich -...
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ACUM 2016
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Long-term reliability: Munich 1970
2 ETH Zürich - Dr. A. Winistörfer,
Materialwissenschaft, 327-0610-00L Verbundwerkstoffe
Summer Olympics 1972
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Carbon loops
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Marenco Rotorblades
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America’s Cup 2010 – Alinghi 5
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2500 t cable with ball termination
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Contact
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Frictional contact Model stick-slip transition
P: normal pressure COHE: Cohesive limit (default=0) TAUMAX: Maximal friction stress (default =1e20) m: friction coefficient
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Results along this path
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STRESS COMPONENTS
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S11 along the path
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S22
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S33
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Shear
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Failure criteria (Max Stress vs Puck)
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Puck Fiber Criterium vs Friction Coefficient
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Puck Matrix Criterium vs Friction Coefficient
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MAXIMAL FRICTIONAL STRESS (TAUMAX)
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Max Stress Criterium vs Max Friction Stress
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Puck Matrix Criterium vs Max Friction Stress
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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
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