Abstract
Rubber undoubtedly possesses a number of unique properties which make it a particularly suitable accessory material for constructional purposes; e. g., in elastic mountings, elastic couplings and dampers against torsional vibration on driving shafts. Its application to such uses, however, requires knowledge of other than the usual properties. Most of these are related to simple physical quantities such as modulus at a given elongation, hysteresis, permanent set and the like. In § 2 will be discussed magnitudes that may be entailed in the cases in question. Relations existing between the various magnitudes will come up for consideration in the course of the discussion. Most of the problems involved have already received some attention. Some of the more important investigations into this subject will be dealt with in § 3. Finally, the results of experimental work on the static and dynamic behavior of rubber under compression will be recorded in § 4.

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