Interference fit has been widely used in the field of mechanical assembly.In this paper,the finite element analysis software and nonlinear contact analysis method are used to study the stress state and contact state of the new ma-rine turbocharger interference fit system structure under two different interference conditions at the limit speed.After re-search,only the interference fit between the bushing and the compressor impeller is studied.With the increase of the a-mount of interference,the fit surface between the compressor impeller and the bushing is closer;under the action of the double interference of the bushing and the gas seal,the interference of the gas seal and the bushing has little effect on the stress of the compressor impeller;however,the interference of bushing and gas seal should not exceed 0.12 mm and 0.15 mm.It provides theoretical guidance for the next stage of interference test verification.
维普
万方数据