EFFECT OF BOLT HOLE DIAMETER OF CONNECTED PLATE AND THICKNESS PROPORTION OF JOINT ON SLIP RESISTANCE OF FRICTIONAL TYPE BOLTED JOINTS WITH HIGH-STRENGTH COUNTERSUNK HEAD BOLTS
Yu LANG, Hitoshi MORIYAMA, Takashi YAMAGUCHI
Countersunk head bolts can secure thickness of corrosion preventive coating with its flat head and improve anticorrosive properties of bolted connections. In this study, for utilizing its advantages in various type connections, FEA was conducted to investigate effect of bolt hole diameter of connected plate and thickness proportion of the joint with it on frictional slip resistance. From numerical results, it’s found that relationship between slip coefficient and slip/yield resistance ratio shows similar tendency in cases of countersunk and hexagonal bolt, and the tendency is evaluated by existing equation of hexagonal bolted joint. Decreasing behavior of bolt tensions is different in two bolt type. The effect of oversized hole is small.
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