The design alternatives for housings have been formed inside of the structure as different quantities of longitudinal and transverse stiffeners. In this study, three different gearbox housing designs (basic, cross and cellular) are formed and analysed by using ANSYS® software. In order to reduce noise and vibration levels, some modifications are frequently used on gearbox housings. In addition to gear design, gearbox housing design is also essential to reduce the radiation of undesired structure-borne noise and vibration. During power transmission, undesired vibration and noise arise in gear systems. In the industry, gears are the most common power transmission equipment, and for this equipment, increasing durability and rigidity has an essential importance. The expected lifetime of the component was determined for the maximum crack depth corresponding to 75% of the zones’ thickness.Įspecially, with the advancement of technology, mechanical parts need to be designed to be lighter and more durable. The programs developed returned the values of SIFR for different scenarios of initial flaws position and geometrical parameters. The Stress Intensity Factor Range (SIFR) and the formulation of standard BS 7910:2013+A1:2015 was used for embedded and superficial flaw types. To the numerical simulation two programs in Octave language were developed. And the membrane and bending stresses were determined through stress linearization of the critical vibration modes for each zone (cover and body).

Four different refined meshes were considered and analysed. The first part started by simulate the load service applying vibration analyse. The new approach developed in this work is divided in two parts: finite elements simulation and numerical simulation.

During maintenance procedures two non-expected cracks were detected through the non-destructive liquid penetrant testing one in the middle of gearbox housing cover and the other in the central body of the component, near of one weld zone. This railway component is a gearbox housing manufactured by welding, bending, and bolting in structural low carbon steel. The present work presents a new approach to study the structural integrity of railway component.

Ansys 14.5 full crack