In the present paper, numerical simulation is used to analyze the composite tooth failure of composite chainring at a low-velocity/low-energy impact. To reduce the size of the numerical model only 7 teeth are simulated. In order to validate the numerical simulation, impact force-displacement curves are compared to experimental results obtained on the same specimens used in the simulation. Damage size and residual displacement are also compared with the experiments. As the teeth geometry cannot be modified due to the chain, the effect of fibers type is studied in order to avoid teeth failure. The results show that delamination is the first damage followed by fibers failure. Moreover, the fibers type has no significant influence on the tooth behavior under impact. Finally, composite material presenting a low Young modulus and a large elongation is investigated and tooth failure is avoided.
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