Non-Linear Motion Analysis of Reciprocating Vibro separator
Abstract
In this paper, dynamic motion behavior of reciprocating vibro separator model has developed and analyzed. Effective of 3 different elasticity of vibro-pad material has computed and nonlinear dynamic motions have investigated. Based on previous empirical data computational model has validated with elasticity value of 25MPa, vibro motor at 1000 rpm and vibro motor angle (α) 30ᵒ has resulted in minimum horizontal displacement and periodic motion of system. For the motion analysis Poincaré, Fast Fourier Transit (FFT) & Time data graphs have used. The computational model of reciprocating vibro separator has observed significant resembling with industrial case study.
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Introduction
We are living in world where technology is most important part of life. Every day new techniques are implemented in different fields but still some of area is having lack behind in usage of modern technology. Agriculture is one of them where some processes have to improve. Like separation process in which researchers are working so that their work will give a very useful output. In separation process Reciprocating vibro separator is used. Some work has been performed for improving its efficiency and its strength.
The present work is to investigate the dynamic motion behavior of Reciprocating vibro separator by using ANSYS software besides using DEM simulation method. In the past, The set up for experimental work is done on the placement of motor at the up side center place of vibro separator box whereas in present work the motor is connected at two side center place of separator box. Aim of this paper work is to analyse the Amplitude and dynamic motion behavior of Reciprocating vibro separator as it has significant effect on particle flow rate and velocity. Authors have attempted to validate the computational model with industrial case study
Conclusion
In the present work, computational model has developed and analyzed for different nonlinear motion behavior of vibro separator with 3 different elasticity of vibro-pad. Require damping coefficient of mass and stiffness has evaluated using half power band width method. Analyzed computational model have shown significant validation with industrial case study which lead to conclude the following conclusions:
1. Authors have lead to conclude that as decreasing the elasticity of vibro pad material it will make the system more and more unstable as shown in figure4(a-b), 5(a-b) & 6(a-b).
2. Nonlinear motion behaviors of system have concluded that system has less multi periodicity with at 25MPa elasticity of vibro pad in computational model which shown more resembling with experimental Poincaré responses.
3. Effective operating parameters to be concluded from Computational model with elasticity value of 25MPa, vibro motor at 1000 rpm and vibro motor angle (α) 30ᵒ has resulted in minimum horizontal displacement of 5.7 mm bidirectional with periodic responses. Authors would like further extend this work for varying motor angle for future work.