The Prediction of Stress and Strain Behaviors in Composite Gears using FEM

Metal matrix composite (MMC) gears are used as a major component in the industry and are responsible for providing high-quality power transfer at high speeds. High quality, including high strength and impact-resistance, low brittleness, and long lifetime, is very important and needed in the industry. Gears are made of different materials, and, nowadays, researchers and industrialists have turned to designing, manufacturing, and using composite gears more than other gears due to their low weight, high hardness and strength, and better mechanical properties. In this research, the stress and strain behaviors are predicted in the composite gears made of aluminum silicon carbide with ۳ different SIC volume fractions, namely ۵۵ vol.%, ۴۰ vol.%, and ۳۰ vol.%, and with specifications of (Al۴۵/SIC۵۵, Al۶۰/SIC۴۰, and Al۷۰/SIC۳۰) and gears made of aluminum oxide with ۳ different alumina weight fractions, namely ۹۴ wt.%, ۹۶ wt.%, and ۹۹.۵ wt.% to evaluate and compare the stress behavior due to different forces exerted on a single gear tooth in MMC gears. The Al۴۵/SIC۵۵ composite experienced the largest stress compared to other composites such as Al۶۰/SIC۴۰ and Al۷۰/SIC۳۰. The strain values (unlike the stress values) reduced with increasing in the volume fraction of the SIC reinforcement. Moreover, ۹۴% aluminum oxide composite showed larger stress compared to ۹۶% aluminum oxide and ۹۹.۵% aluminum oxide. The spur gear is designed and analyzed using SOLID WORKS and ANSYS Workbench softwares.

کلیدواژه ها:

Metal Matrix Composite Gears ، Composites ، Stress ، Strain ، Alloys