A CALCULATION METHOD TO OBTAIN NONLINEAR INTER-NAL FRICTION MATERIAL PARAMETERS FOR THE MEASUREMENT WITH TORSIONAL PENDULUM | Zendy

SUN ZONG-QI | Zendy; Deqin Yan | Zendy

Open Access

A CALCULATION METHOD TO OBTAIN NONLINEAR INTER-NAL FRICTION MATERIAL PARAMETERS FOR THE MEASUREMENT WITH TORSIONAL PENDULUM

Author(s) -

SUN ZONG-QI,

Deqin Yan

Publication year - 1993

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.42.592

Subject(s) - pendulum , torsion pendulum clock , nonlinear system , oscillation (cell signaling) , internal friction , mechanics , shear modulus , classical mechanics , amplitude , physics , shear (geology) , materials science , optics , thermodynamics , genetics , quantum mechanics , composite material , biology

Assuming the smallness of the internal friction which depends only on the amplitude of shear strain, based on analytical mechanics, we developed a calculation method to obtain non-linear material parameters of internal fiction and shear modulus from the sampled data of tor-sional displacements of the free-decay oscillation for the torsional pendulum.

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