Abstract

The mechanical performance of different lap joint configurations such as adhesive joint (ADJ), nut-bolt joint with adhesive, and riveted joint with adhesive has been investigated using finite element method (FEM). Modeling of glass fiberreinforced polyester (GFRP) with natural fillers such as coir husk, rice husk, and wheat husk has been done in ANSYS 19.0 software. The aim is to find out the effect of natural fillers on the mechanical properties such as maximum stress, strain, and failure load of different lap joint configurations under uniaxial tensile loading. Different lap joint configurations were modeled according to the ASTM D5868 standard with a 25 mm bonded length of polyester adhesive. Hashin damage criterion, cohesive zone model using traction separation law, and progressive damage models were used in the finite element simulations to characterize the damage initiation and damage evolution for the adhesive (polyester) and adherent (GFRP), respectively. The highest maximum shear stress (213 MPa) was found in the adhesive joint of GFRP/C composite. The shear damage variable showsmaximum value of the damage (0.93) for the hybrid riveted joint. Adhesive joint of GFRP/R bears the maximum load among all the lap joint configurations.

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