International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 03 | Mar -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Design & Testing Of Semi-Automatic Vibration Absorber R. S. Autade1, R. A. Patil2, J. P. Gavade3, P. D.Babar4 1
Asst. Professor, Dept. of Mechanical Engineering, Fabtech College of engg. Maharashtra, India.
2
Asst. Professor, Dept. of Mechanical Engineering, Fabtech College of engg. Maharashtra, India.
3
Asst. Professor, Dept. of Mechanical Engineering, Fabtech College of engg. Maharashtra, India.
4
Asst. Professor, Dept. of Mechanical Engineering, Fabtech College of engg. Maharashtra, India.
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Abstract: When machines are operating they create vibrations. In some cases these vibrations have a negative influence on the performance of the machine. For instance, in a milling machine the whole construction vibrates when the tool rotates and material is cut. This can have a negative impact on the precision of the manufactured products, the lifetime of the machine and the environment. A solution to this problem can be found in the application
Fig 1.1: solid45 –structural solid
of dynamic vibration absorber (DVA). A DVA is a construction that can be mounted on the vibrating
SOLID45 is used for three dimensional modeling
machine and which is connected to a controller. Whenever
of solid structure the element is defined by eight nodes:
the vibration characteristics of the machine change, the
translations in the node x, y and z direction. The nodes at
controller adjusts the DVA so that the vibrations get
the one end of beam are fixed i.e. all degree of freedom of
damped as good as possible. The aim is to design active
the nodes are zero.
DVA
Dimension and properties of the beam
1. MODAL ANALYSIS OF BEAM.
Length of beam = 1000mm,
In order to predict frequencies and mode shapes
Thickness of beam = 5mm,
of beam modal analysis is carried out using ansys software. Width of the beam = 50mm,
The beam is modeled using SOLID45 element.
Density of material = 7800 kg/m3, Modulus of elasticity = 200Gpa.
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