Abstract：A modified friction model of energy dissipations in flat lap structure has been established, which can be degraded into both Coulomb Friction Model of energy dissipations and Goodman’s hypothesis under certain conditions. Numerical calculations of a certain kind of flat lap structure have been carried out and showed that the dissipation values obtained from Coulomb Friction Model make a good match with that from experimental results under small external loads. However, it becomes unavailable as external loads grow larger. On the other hand, the power-law relationship results obtained from modified friction model coincide better with experimental results than that from Coulomb Friction Model. Dissipation values obtained from modified friction model show smaller errors than that from Coulomb Friction Model under both small and large external loads. Modified friction model shows a better description of the characteristics of energy dissipations in flat lap structure.
2014, Vol. 35 
