Open AccessA CALCULATION METHOD TO OBTAIN NONLINEAR INTER-NAL FRICTION MATERIAL PARAMETERS FOR THE MEASUREMENT WITH TORSIONAL PENDULUM
Author(s) -
Zhibin Sun,
Yan De-qin
Publication year - 1993
Publication title -
wuli xuebao
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.