Date of Graduation
Statler College of Engineering and Mineral Resources
Mechanical and Aerospace Engineering
Particulate metal matrix composites (MMC) exhibit higher stiffness, strength and wear resistance compared to metal alloys. They exhibit superior compressive and buckling strength because of their higher plastic modulus. MMC's can operate at very higher temperatures than fiber-reinforced polymer composites. Their isotropic behavior and forming ability by conventional methods makes them a better choice for low-cost applications. They have good thermal conductivity, high electrical conductivity and low thermal expansion.;The main objective of this study is to predict numerically the stress distributions around the hole in a bolted joint made of particulate metal matrix composite and to investigate the associated load transfer efficiencies both for a single and double lap bolted joints. A three dimensional Finite Element parametric model has been developed to study the effects of various design parameters on the structural performance of such joints.;Single lap bolted joints experience bending when tension load is applied to the joint because of the unsymmetrical configuration of the joint. This effect is reduced in double lap bolted joints due to their symmetry. This research quantifies the relationship between the stress around the hole in bolted joints and the washer diameter, bolt diameter, tightening pressure, and the clearance between the hole and the bolt. It has also been observed that variations in Young's Modulus have no insignificant effect on the stress concentration around the hole.
Goteti, Vasudha, "Parametric modeling of bolted joints between components made of particulate composite materials" (2003). Graduate Theses, Dissertations, and Problem Reports. 1374.