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Showing papers on "Vibration fatigue published in 1970"


Journal ArticleDOI
TL;DR: In this paper, a theoretical and experimental investigation of quasi-harmonic friction-induced vibration is reported, where the vibration is of near-sinusoidal form and is solely governed by dynamic friction forces.
Abstract: A theoretical and experimental investigation of quasi-harmonic friction-induced vibration is reported. The vibration is of near-sinusoidal form and is solely governed by dynamic friction forces. However, the friction-velocity curve must be of a particular shape for the vibration to occur. The amplitude of the quasi-harmonic vibration is shown to increase with sliding velocity until oscillation ceases at some upper velocity boundary. The introduction of suitable damping will quench the vibration entirely. The vibration can exist at high sliding velocities and as a consequence may influence the operation of automatic transmissions, brakes, and clutches.

73 citations


01 Apr 1970
TL;DR: Measured vibration response of residential structures excited by mechanical and acoustical loadings was measured in this paper, showing that residential structures experienced higher vibration response when mechanical and acoustic loadings were applied.
Abstract: Measured vibration response of residential structures excited by mechanical and acoustical loadings

9 citations


Book ChapterDOI
JT Broch1
01 Jan 1970

9 citations


Journal ArticleDOI
TL;DR: Machine assemblies can be prestressed to eliminate stress gradients and to increase fatigue life as discussed by the authors, which can be used to increase the fatigue life of a machine assembly and reduce stress.
Abstract: Machine assemblies can be prestressed (1) to eliminate stress gradients and (2) to increase fatigue life.

8 citations


Journal ArticleDOI
TL;DR: In this paper, a deformation based fatigue failure criterion was established, which is independent of the cyclic load history (level, frequency and sequence of load cycles), and it was recognized that the acceleration of fatigue deformations prior to failure starts at the deformation caused by the highest applicable stress in a static test on the same type of specimen.
Abstract: It was attempted to establish a deformation based fatigue failure criterion which is independent of the cyclic load history (level, frequency and sequence of load cycles). Based on the analysis and comparison of cyclic and static test results, it was recognaized that the acceleration of fatigue deformations prior to failure starts at the deformation caused by the highest applicable stress in a static test on the same type of specimen. That means, fatigue failure initiates at the deformation corresponding to the static strength. This criterion may serve to refine our material models in addition to predict fatigue failure.

3 citations



Journal ArticleDOI
TL;DR: In this paper, the static strain level at a cable support includes three major components: tension, radial compression, and bending, and the analytical solution for static bending in stranded conductors is derived for the following cases of conductor supports: (1) conductors with and without armor rod reinforcement; (2) conventional suspension clamps with bell mouths; and (3) unequal sag angles on either side.
Abstract: The analytic solution for static bending in stranded conductors is derived for the following cases of conductor supports: (1) Conductors with and without armor rod reinforcement; (2) conventional suspension clamps with bell mouths; and (3) unequal sag angles on either side. Rigorous solutions are reduced to simplified forms for ease of computation. Over a wide range of test conditions, calculated static bending strains are in good agreement with those determined experimentally. Overhead power conductors and other taut cables exposed to wind-induced transverse vibration are susceptible to fatigue failures, particularly at supports. The vibration fatigue life of such cables decreases as the static strain level is increased. The static strain level at a cable support includes three major components: Tension, radial compression; and bending.

2 citations


01 Jul 1970

1 citations