Abstract
Under some operating conditions the roller-chain strand between sprockets may have a marked vibration, whereas under other conditions most of the strand may be straight. This paper presents an analytical study of the tight strand vibration. It is assumed that the strand is equivalent dynamically to a string in tension, and loaded with a mass at each roller center. A relation for natural frequencies is given. An impact or impressed frequency close to one of the natural frequencies may cause a marked vibration of the strand. The results of some tests are presented. There is fair agreement between the experimental results and the theoretical predictions.
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