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IJSTR >> Volume 2- Issue 4, April 2013 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Beam And Rotating Disc Brake With Different Contact Location

[Full Text]

 

AUTHOR(S)

Ammar A. Yousif Mohammed, Inzarulfaisham Abd Rahim

 

KEYWORDS

INDEX TERMS: - QRDAMP method, matix27, eigenvalue, contact stiffness, modal coupling, and dynamic instability

 

ABSTRACT

ABSTRACT: - In this paper a matix27 of ANSYS/General is used to simulate the contact between beam-disc systems. The beam was changed to different location and by using complex eigenvalue the stability was detected. An attempted is made to investigate the effect of system parameters, such as friction coefficient of the contact interaction between the beam and the disc, disc young's modulus and contact stiffness. The main idea of the complex eigenvalue method involves asymmetry arguments of the stiffness matrix which formulate the friction coupling. This idea is more efficient and provides more insight to the friction induced dynamic instability in the disc brake system. The simulation performed in this work present a guideline to reduce the squeal noise of disc brake system and showed that the most important source of nonlinearity is the contact frictional sliding between the disc and the beam. ANSYS allows for a convenient contact interface by specifying the contact surface and the properties of the interfaces. The complex eigenvalue is solved by using modal analysis with QRDAMP method. The analysis determined the stability of the system. When the system is unstable the real part of the eigenvalue becomes positive and squeal occurs. If the damping ratio is negative, the system becomes unstable, and vice versus. The result showed that even the beam and disc at natural frequency, no squeal could generated if the beam at anti-node position.

 

REFERENCES

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