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유한요소법을 이용한 크랭크 축의 진동 해석에 관한 연구
강승주,오택열,최명진 慶熙大學校 材料科學技術硏究所 1994 材料科學技術硏究論集 Vol.7 No.-
High speed engines with high powers are increasingly in demand and engines employ crankshafts. Accordingly, such problems as bending and torsional vibrations become the point at issue in crankshaft design. In this study, modelling techniques for dynamic analysis of a crankshaft system are presented to investigate crankshaft system vibrations. The crankshaft was idealized by structure containing beams and shells, front pulley and flywheel modelled by a set of lumped masses and moments of inertia, and journal bearing modelled by a set of springs and dampers. These modelling and solution were applied for the analysis of four cylinder in-line engine, with free-free boundary condition, and with oil film supported boundary condition. The calculated natural frequencies and mode shapes were compared with the experimental results, and coincided well.