Study on the Damping Capacity of Bolted Joints : Effects of the Joint Surfaces Condition
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概要
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As a serial study on the damping capacity of a bolted joint, in here effects of the machining method and roughness of joint surfaces, joint materials and also interfacial layers, on the damping have been investigated. By measuring the logarithmic damping decrement and the natural frequency of bolted cantibeams, how the damping and its amplitude dependence, and also the optimum preload, change themselves with different conditions of joint surfaces, has been also discussed. From the results it is known that the contact condition of joint surfaces has large effects on the damping capacity, but a little effect on the natural frequency. In the metal contact condition, the micro-slip on joint surface caused by the plastic deformation or the tearing of seizured points, is of importance to know the behaviour of damping. In the oiled joint, the increase of damping can not be always expected even if high viscosity oil is applied to joint surfaces.
- 一般社団法人日本機械学会の論文
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