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.
Highlights
The mechanical gearbox is the basic part of all mechanical machines
The aim of the paper is to establish whether it is possible to simulate vibrodiagnostic signal to monitor the technical condition of rotating components in a mechanical gearbox, which is one of the most important elements in a combat vehicle
On the basis of the process we can state that the vibration signal is a very effective tool when tracking the technical condition of the mechanical gearbox
Summary
The mechanical gearbox is the basic part of all mechanical machines. In a vehicle it is one of the most important elements which enables torque to be transferred from the combustion engine to the final gears of single driving axles.The vibrations of the gear box are transferred by the joints of single shafts. Our aim is to design a gear box by modelling so that no critical vibration spectrum would occur and the presumed service life would be preserved. Another important aspect we are going to deal with is the observation of a vibration signal during the gear box service life. In practice it is essential to determine a critical vibration signal which would help to prevent failure occurrence. For this purpose we can use a virtual model which enables us to examine a vibration signal at low cost [2]. The aim is to decide how detailed the model should be to correctly describe the vibrational and acoustic performance of the powertrain [3]
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