Prediction of hyperelastic material sealing pressure using experimental and numerical analyses

Abstract

In commercial vehicle air braking system, leakage is one of the major problems and will affect the performance of the vehicle braking in terms of brake pedal travel and stopping distance. If there is any leakage in the brake system, the vehicle stopping distance will not meet the safety regulations. One of the main reasons for braking system leakage is ineffective sealing mechanism. The majority of sealing elements used in the air brake system are O-rings, lip seals, and gaskets. This article presents an experimental procedure for measuring the sealing pressure between an O-Ring and its mating parts. The contact pressure measurement was performed in a static condition by means of an experimental test rig using Fuji film. For the sealing pressure study, a test rig was properly designed to replicate the actual operating conditions. Contact pressure was evaluated by means of Fuji film interposed between the O-ring and its mating parts. The sealing pressure tests were carried out for different clamping load conditions. The experimental results were compared with the numerical result using the finite-element analysis (FEA). A good correlation was found between the experimental and the numerical results. The outcome from the experimental results will be useful for finalizing the hyperelastic material models, which are input to the FEA for future reference.

Keywords

Sealing pressure O-ring Fuji film finite-element analysis hyperelastic materials

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References

Sukumar

Ramesh Bapu

Durgaprasad

. Determination of sealing pressure in hyperelastic O-ring with different hardness using a numerical method. J Elastomer Plast 2018; 51: 684–697.

Sukumar

Ramesh Bapu

Durgaprasad

. Numerical and experimental evaluation of hyperelastic material parameters. In: Advances in materials and metallurgy. Lecture notes in mechanical engineering. Singapore: Springer, 2018, pp. 485–494. DOI: 10.1007/978-981-13-1780-4_47 Google Scholar.

Sukumar

Ramesh Bapu

Durgaprasad

. An analysis of hyperelastic material models. Int J Mech Prod Eng Res Dev 2018; 8(7): 1220–1229.

Sukumar

Ramesh Bapu

Durgaprasad

, et al. Numerical analysis and design optimization of lip seal opening pressure for automotive valves. In Advances in manufacturing technology. Lecture notes in mechanical engineering. Singapore: Springer, 2019, pp. 119–129. DOI: 10.1007/978-981-13-6374-0_15.

Sukumar

Murugan

Subramanian

, et al. Design and optimization of lip seal for air braking system. SAE Technical paper 2015-26-0215. DOI: 10.4271/2015-26-0215.

Yang

Salant

. Numerical model of a tandem reciprocating hydraulic rod seal. J Tribol 2008; 130(3): 032201.1–032201.7.

Misiewicz

Richards

Blackburn

, et al. Techniques for estimating contact pressure resulting from loaded agriculture tyres. In: Americal society of agricultural and biological engineers annual international meeting, 2008, pp. 521–535.

Lee

Lin

Jian

, et al. Simulation and experimentation of the contact width and pressure distribution of lip seals. Tribol Int 2006; 39(9): 915–920.

Belforte

Conte

Mazza

, et al. Test rig for rod seals contact pressure measurement. In: 3rd International Conference Tribology & Design 2010, Algarve, Portugal, https://www.researchgate.net/publication/262343066 (2010).

10.

Conte

Manuello

Mazza

, et al. Measurement of contact pressure in pneumatic actualtor seals’. In: AITC-AIT 006 international conference on tribology, Parma, Italy, 20–22 September 2006.

11.

Marshall

Lewis

Dwyer Joyce

. Characterization of contact pressure distribution in bolted joints. Strain 2006; 42(6): 31–43.

12.

Rubber

. Vulcanized or thermoplastics – determination of stress-strain properties. 5th ed., Geneva: ISO 37, 2011.