Abstract

This paper deals with static deflections of rubber mountings. An equation has been developed which correlates all the available data on plain rectangular slabs under compression loading. Data are given showing how closely this equation checks experimentation, and examples are solved, giving the method of using this equation and also the use of a chart simplifying the calculations. Additional data are given on other shapes of compression mountings.

The deflections of shear-type mountings are shown to agree with theory. Combination shear-compression units have also been tested.

Data are given showing the variation of hardness on the durometer A scale with change of temperature. At room temperature moduli of elasticity for compression and for shear are related with durometer hardness number, and the equations of these curves are derived.

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