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Abstract

An attempt is made to evolve some charts which should directly read the two-node frequency parameter and mode shape of engine systems having four to eight cylinders with equal moments of inertia per cylinder line and equal shaft stiffnesses between the cylinder centres. The dynamic matrices for these systems are iterated upon in a digital computer to obtain the two-node frequency parameter for different ratios of inertia per cylinder line to flywheel inertia and crankthrow stiffness to stiffness of shaft between last cylinder and flywheel. The value of the frequency parameter is further used to evaluate relative amplitudes. The results indicated by the charts are in close agreement with the exact values.

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References

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Two-Node Mode Shape and Frequency Parameter of Torsional Oscillations in Engines

Abstract

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References