Seal/Groove Performance Analysis Models

Cai, Hao; Anwana, Okon

doi:10.4271/2002-01-2588

Cited by 7 publications

(1 citation statement)

References 5 publications

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“…Previous experimental or computational studies on the rectangular seal component in disk-caliper braking systems focused on the static properties of the seal, specifically its springback force or its ability to retract the piston away from the rotor during an off-brake event; 3,8,9 however, the properties of the seal during a dynamic braking event were not studied. The significance of the interfacial friction in elastic seals and linear actuators [10][11][12][13] has been studied using experimental or stochastic methods, [10][11][12] and frictional forces have also been empirically estimated on the basis of the sealgroove design and the actuation pressure.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characterization of the rectangular piston seal in a disk-caliper braking system using analytical and experimental methods

Liette

Dreyer

Singh

2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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A new simplified, yet representative experiment of a floating dual-piston disk-caliper braking system is designed to isolate the rectangular seal and the piston–bore chamber from the complexities of a braking system. The physical sources of the stiffness and damping mechanisms associated with the seal during an applied pressure event are identified and quantified under harmonic excitation. A tractable analytical model of the experiment that incorporates the identified dynamic seal properties is proposed. This linear time-invariant model describes the governing equations of both the hydraulic brake system components and the mechanical caliper components and provides some insights into a seemingly nonlinear system. For a range of pressure amplitudes and brake configurations, excellent agreement between predictions and measurements is obtained for the peak-to-peak values of the piston–bore chamber pressure, the force transmitted by the pistons, and the caliper displacement. The proposed model and experiment could be utilized in brake control, vibration, and pedal feel studies.

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