The purpose of this paper is to clarify the lateral vibrational characteristics of a leaf spring. The frequency equations are formulated under the assumption so-called "point pressure". For a number of leaf springs, the natural frequencies and their normal modes are calculated, and good agreement with experiments is obtained. Furthermore, for a multi-leaf spring, it is found that the analytical method based on the stepped beam hypothesis fails to predict some of the significant modes in the high-frequency region, while the presented method yields favourable numerical data.
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