Dynamics simulation of mechanical gearbox vibration

Abstract

This paper focuses on creating a virtual model of mechanical gearbox used in medium-sized terrain vehicle using MSC.Adams software. This software is regarded as the most common and effective tool to simulate the gearbox as multibody system and to record and analyse the vibration signal from the gearbox. The paper makes an overview of modelling and simulation and performs an analysis with frequency spectrum. The paper demonstrates that it is possible to simulate vibration signals through the model of the gearbox created in 3D CAD software and then analyse in multi-body dynamics software MSC.Adams. Successful application of the virtual model not only help us decrease the cost of design work, but also help us identify the patterns of the vibration signal and the relations between the signal and the technical condition of the gearbox. The goal is to create a virtual model of a mechanical gearbox. In MSC.Adams, the vibration values of the rotating components can be detected in different gears. These values are then analysed and evaluated. The result is a simulation of fault states and identification of vibration frequencies for practical applications.

Video Image Correlation-Based Method Used for the Study of the Torsional Vibrations of an Adder Gearbox

“…= . For the vertically disposed points, P0, …, P3, presented interest mainly due to their horizontal displacements It is known [7] the correlation between the angular displacement  …”

“…There is a lot of research on the common problems that arise in these heavy vehicle transmissions. The main problem that has to be studied very carefully is the problem of vibrations, which leads, implicitly, to the problem of noise produced by such a transmission [1,2]. Any defect, even minor, that can occur in one of the engines has to be eliminated [3].…”

“…The results are validated by experimental tests. As mentioned earlier, vibration is one of the main problems and causes of noise in the case of gearboxes [7]. This is the reason why there are numerous researchers in the field, who have proposed different models to study these vibrations.…”

Study of Metallic Housing of the Adder Gearbox to Reduce the Noise and to Improve the Design Solution

“…Interesting solutions are proposed to control the spread of trusts, in order to have a calculation There are many applications of the same nature and pursuing the same objectives for heavy vehicles. The main problem of this system is represented by the transmitted vibrations [1,2]. For example, in [3], considering heavy-duty construction equipment with increasing complexity, a major component of this equipment must be monitored.…”

“…Vibration is one of the main causes of noise that is generated and transmitted by the gearbox [7]. For this reason, there have been numerous works that have dealt with the analysis of vibrations, both from an experimental point of view and from a theoretical point of view.…”