Finite Element and Molecular Dynamics Simulation of Influence of Water Intrusion on FRP/RPUF Interface of Composite Insulated Cross Arm
Composite crossarm is widely used in high-voltage power transmission projects,but in recent years,there have been many failures of composite crossarm containing FRP/RPUF interface due to water intrusion.Therefore,this paper combined finite element simulation and molecular dynamics simulation to obtain the deterioration mechanism of the composite cross arm interface under water intrusion:at the beginning,water invaded the interior of the material under the drive of internal and external concentration difference,and after reaching saturation,water absorption was mainly through hydrogen bond recombination and chemical hygroscopic bonding with the hydrophilic groups at the interface.Subsequently,due to the interface mismatch stress and chemical decomposition,cracks and other water molecular clusters were generated through the channels,and the water was mainly intruded into the interior of the composite insulated cross arm through these channels.The results of this paper are of reference significance for clarifying the damage mechanism of water on the interface of the composite crossarm and improving the performance of the composite crossarm.
万方数据
维普
