Amplitude-dependent damping in zirconium

Fernández, Lucía; Povolo, F.

doi:10.1080/00318087508226830

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…Concerning material damping, these effects have been determined for different metals: beryllium, 11 magnesium, 12–14 nickel, 15 niob, 16 zirconium, 17 as well as shape memory alloys. 18 The amplitude-dependent damping of common engineering materials, such as different types of c-steel and stainless steel as well as some of the aluminum alloys, has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Metal–plastic composites with amplitude-dependent constraint layer damping

Klaerner

Wuehrl

Kroll

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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For metal–plastic composites with thin shear-sensitive cores, high damping can be determined. These materials were developed to reduce the structure-borne noise and are therefore used for thin-walled components with bending loads. In addition to the known sensitivity due to the temperature and frequency, these materials show a significant dependency on vibration amplitudes. Within the framework of this study, the nonlinear damping of metal–plastic composites was determined experimentally using free-vibrating cantilever beams. A detailed analysis of the derived velocity–time curves showed a nonlinear damping within the decay. An exponential approach was successfully used to describe the relation between damping and current deflection. Furthermore, a strain energy-based evaluation is introduced to quantify the share of the core contributions. For this purpose, the strain energy of several acoustically sensitive car components as well as the beams with varying supports and vibration lengths were determined numerically with a finite element analysis. The strain energy ratio of the cores was then derived as a comparative measurement and within a finite element-based design of experiments. A cantilever beam setup with a component-specific beam length representing similar core strain energy ratios was retested and showed a similar exponential amplitude dependence but higher damping parameters.

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Section: Introductionmentioning

confidence: 99%

Metal–plastic composites with amplitude-dependent constraint layer damping

Klaerner

Wuehrl

Kroll

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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Influence of pipe diffusion of defects on the amplitude dependence of hysteresis internal friction

Suprun

1988

Phys. Stat. Sol. (a)

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Formulae are obtained which describe the damping decrement of hysteresis dislocation internal friction with due account of pipe diffusion of mobile pinning points. The amplitude dependence of a damping decrement is described by a non‐monotoneous function which has maximum at some value of the applied stress amplitude. The asymptotic formulae are obtained for the damping decrement at low and high amplitudes. The pipe diffusion of pinning points results in the displacement of both the beginning of an amplitude dependence and the point of maximum into the region of low amplitudes. The question is dicsussed about the influence of a number of mobile pinning points and the energy of dislocation interaction with point defect on the amplitude dependence of internal friction.

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Low-temperature internal friction in cold-worked zirconium

Bolcich

Savino

1980

Journal of Nuclear Materials

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Amplitude-dependent damping in zirconium

Cited by 8 publications

References 21 publications

Metal–plastic composites with amplitude-dependent constraint layer damping

Metal–plastic composites with amplitude-dependent constraint layer damping

Influence of pipe diffusion of defects on the amplitude dependence of hysteresis internal friction

Low-temperature internal friction in cold-worked zirconium

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