Measurement of Stress at Root of the Gear Tooth of the Spur Gear Using 3D Photoelasticity and Finite Element Analysis

Abstract

Gears are toothed components that mesh perfectly to provide power and motion between two shafts. As a result, positive drives are another name for gear drives. No matter which gear is driving the other in a set of gears, the smaller one is known as the pinion and the bigger one is the gear. When the pinion acts as the driver, a step down the drive is produced, which causes the output speed to drop and the torque to rise. On the other side, step-up drive, when the output speed rises and the torque falls, is produced when the gear acts as the driver.  The teeth of gears installed on rotatable shafts are designed to mesh (engage) with gears positioned on other shafts. Gears transfer motion (rpm) and force (torque) from one component of a machine to another. Two gears will revolve at half the speed of the driving gear and provide double the torque if the driven gear has twice as many teeth as the driving gear.  It has been determined through several physical tests utilising the photoelasticity technology that the spur gear photo elastic model is secure for 2 kg under loading conditions. After experimental examination, the research approach used is confirmed. The design and analysis approach used here for the spur gear may be modified for use with other comparable automobile components.