Experimental analysis of endurance of elastic flexible couplings with non-metallic elastic elements

The modular design principle implies the development of effective techniques to join different modules or units. The endurance of elastic flexible couplings often determines the service life of the machine as a whole. To determine the endurance of petal couplings, the endurance tests of flexible couplings with elastic elements made of various materials were conducted. The loading conditions included a rated torque and half-coupling displacements. The experimentally determined fatigue curves were used to find the allowable relative displacements of the half-couplings for a given endurance and check the applicability of various materials for making petals. The results of research proved that petal couplings demonstrate high endurance under significant radial and angular displacements of half-couplings. The criteria of petal coupling failure that will be useful when designing actuators are suggested.

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