Study on Mechanical Behavior of Self-tapping Screws Connection Using Washers in Single-Lapped Glass Fiber Reinforced Plastic Plates by Experiment and Finite Element Analysis

摘要

In recent years,mechanical characteristics of Glass Fiber Reinforced Plastic(GFRP)connections using bolts/rivet have been researched in detail,and they are used in many GFRP structures.However,the connection lack bearing strength compared with material strength and they need the prepared holes.In this paper,we surveyed the self-tapping screws connection strength and effects of washers on connection strength of single-lapped GFRP plates using self-tapping screws under tensile-shear loading by experiment and finite element analysis(FEA).The strength of self-tapping screws connection in GFRP plates depends on die washer’s diameters.When increasing washer’s diameter,the bearing strength of connections increased.Hence,increasing washer’s diameter at reasonable levels is an effective method to increase the load carrying capability for self-tapping screws connection in GFRP plates.Moreover,FEA was proposed to investigate the bearing strength of connections and there were good agreements between FEA and experimental results.