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8
Issue
vol 60 / AUGUST, 2017
Article

DOI 10.17586/0021-3454-2017-60-8-742-752

UDC 681.586.2

APPLICATION OF THREE-RIBBON ELASTIC SUPPORT WITH QUASI-ZERO REACTIVE TORQUE IN TEST BENCHES

V. I. Vetrenko
Tomsk State University of Architecture and Building, Department of Industrial Management;


Abstract. A three-band elastic support with adjustable opposing torque and adjustable alignment of rotation elements is presented. The design of the support allows to provide quasi-zero reactive moment at small deviation angles. It is noted that the lack of universal formulas for calculation of the support complicates calculation of its geometrical sizes. Methods of the theory of elasticity are used to derive formulas for torsional, axial, and radial stiffness of the support using generalized Hooke's law. The analytical expressions of the generalized reactions of elastic elements and formulas to calculate the stiffness of the support are developed. A suspension with six elastic bands equipped with devices that create tension force compression and simultaneously performs the function of regulating the alignment of rotating elements, is used for experimental verification of the formulas. The experimental results fully confirmed the main theoretical insights. It is supposed that the obtained expressions can be used when creating elastic suspensions in precise instrumentation.
Keywords: quasi-zero reactive moment, three-ribbon elastic support, adjustable alignment, axial and radial stiffness, semi-detailed modeling

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