PUB - Study of leakage characteristics of metallic poppet valves based on a hard or a soft contact model.


A paper on “metallic sealing” was published at the ICFP 2021 in Hangzhou (杭州).


The fluid leakage of metallic ball seat valves is simulated using the method developed by Persson et al. To do so, the contact pressure distribution and contact area are needed. In this work, four different methods are used to calculate these values. Two of these methods assume a hard contact model and the other a soft one. The resulting leakages are compared with each other and with experimental measurements, as well. It is found, that a soft contact model leads to more accurate results and that simplified analytical calculations deliver comparable results to the more sophisticated FEA approach


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