Friction-Induced Vibration in Periodic Linear Elastic Media

Jung, Chulwoo; Feeny, Brian F.

doi:10.1006/jsvi.2001.4027

Cited by 14 publications

(3 citation statements)

References 16 publications

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“…Though water was a nearly Newtonian fluid, it followed Newton's viscosity rule. The density and viscosity of the water changed slightly with the pressure and temperature [27,28]. Thus this dynamics instability could destroy the machining accuracy of the working parts.…”

Section: Dynamics Instability Analysismentioning

confidence: 99%

Study on Nonlinear Friction-Induced Vibration in Water-Lubricated Rubber Stern Tube Bearings

Peng¹

2012

TOMEJ

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Nonlinear friction-induced vibration deteriorated the performance of marine rubber stern tube bearings (RSTB) in a wide variety of propulsion system. In the paper, this study was performed on the level of both practical and experimental bifurcation analysis. Hereto, an experimental set-up of SSB-100 marine stern tube bearing test machine was applied to carry on this project. The synthesis of these practical and experimental results confirmed that nonlinear frictioninduced vibration was due to a subtle balance of negative damping at lower speeds or viscous friction at higher speeds. Furthermore, it was shown how these essential friction characteristics depended on physical conditions such as temperature, normal forces and the material properties in the frictional contact.

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Section: Dynamics Instability Analysismentioning

confidence: 99%

Study on Nonlinear Friction-Induced Vibration in Water-Lubricated Rubber Stern Tube Bearings

Peng¹

2012

TOMEJ

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“…Although a non-constant coe$cient of friction has been known to be one of the crucial factors for system stability, the friction coe$cient is assumed to be a constant with respect to relative speed. This situation is worth studying as it has been shown to be unstable in semi-in"nite media [1,2] and periodic boundary conditions [3,4]. In addition, any parameters having random properties, such as roughness of contact surface, are not included in order to focus on the e!ects of uniform properties of materials.…”

Section: Equation Of Motionmentioning

confidence: 99%

On the Discretization of an Elastic Rod With Distributed Sliding Friction

Jung

Feeny

2002

Journal of Sound and Vibration

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“…where a i is the value of divergence of the ith natural dynamic mode and w i denotes the mode shape containing complex numbers. The results of the complex eigenvalue analysis are used to determine the stability of a system when it contains energy sources such as rotating components [13]. The disc brake system shown in Fig.…”

Section: Instability Analysis Of a Disc Brake Systemmentioning

confidence: 99%

Optimal shape design of a brake calliper for squeal noise reduction considering system instability

Soh

Yoo

2010

Proceedings of the Institution of Mechanical Engineers, Part D:

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Squeal is a noise phenomenon occurring in the last stage of automobile braking with a high-frequency sound. It is very difficult to express the phenomenon using a mathematical model, since the origin of squeal noise is physically complex. However, the possibility of squeal generation can be predicted by solving the vibration equation of the self-excited system using the complex eigenvalue analysis method. The results of the method are expressed as the magnitude of the unstable mode, and the generation of squeal noise can be prevented by reducing the magnitude of the unstable mode of the brake system. The objective of this research is to determine the optimal design process focused on the calliper housing shape to suppress squeal noise generation by reducing the system instability. The objective function is set to minimize the real part of the complex eigenvalue, i.e. the instability index. In the optimization design process, the design variable for topology optimization is established by focusing on the finger part of the calliper housing, which transmits the braking pressure to the pad lining. To supplement the complex shape generated by the topology optimization process, parametric design variables are selected for the subsequent process. Parameters are set to adjust the housing finger stiffness and are defined by considering the topology optimization result. Finally, the asymmetric shape of the calliper housing is obtained to reduce squeal noise generation.

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Friction-Induced Vibration in Periodic Linear Elastic Media

Cited by 14 publications

References 16 publications

Study on Nonlinear Friction-Induced Vibration in Water-Lubricated Rubber Stern Tube Bearings

Study on Nonlinear Friction-Induced Vibration in Water-Lubricated Rubber Stern Tube Bearings

On the Discretization of an Elastic Rod With Distributed Sliding Friction

Optimal shape design of a brake calliper for squeal noise reduction considering system instability

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