Browse Publications Technical Papers 2024-28-0010
2024-10-17

Failure Strength Optimization of a Cartridge Assembly Using Numerical and Experimental Analysis 2024-28-0010

Abstract: Leak Before Break (LBB) is now widely applied in the pressure vessels and other pressurized components to failure by unstable crack initiation and propagation. This concept is also applicated in pneumatic brake system components to validate the structural rigidity of the devices. Pneumatic brake system component plays a vital role in the commercial vehicle platform. It consists of four major systems such as charging systems, actuating systems, control systems and actuators. Charging System includes compressor, reservoir, air dryer, and system protection valves. Compressor acts as an energy source for pneumatic air brake systems, reservoir is used to store the compressed air generated by the compressor, and system protection valves are used to divide and distribute the air flow to the brake system. Air dryer is used to absorb the moisture, oil particles and tiny foreign contaminant, regulate the system pressure, and blow off the excess pressure from the system. It contains desiccant cartridge, filter, unloader valves, orifice, silencer, and tire inflator. The desiccant cartridge is made of sheet metal container with the crimp ring and attached with the base plate at the bottom to avoid the leakage and for better structural rigidity. During pressure pulsation test, one of the major test criteria in automotive standards, crimp ring - base plate was failed before leak. In this study, failure simulation is carried out using non-linear material property to address the cartridge structural failure considering the variation in the yield strength of the base plate. Also, to achieve leak before breakage, failure strength of the cartridge system is optimized using finite element analysis. The test validation is executed, and correlation study is performed to find the results accuracy of the numerical methods. Key words: Air Dryer, Desiccant Cartridge, Finite Element Analysis, Failure Strength Optimization, Air Processing System and Non – linear Analysis.

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