Abstract：
:Hand-arm vibration (HAV) models serve as an effective tool to assess the vibration characteristics of the hand-tool system and to evaluate the attenuation performance of vibration isolation mechanisms. This paper describes a methodology to identify the parameters of HAV models, whether linear or nonlinear, using mechanical impedance data and a nonlinear programming based optimization technique. Three- and four-degrees-of-freedom (DOF) linear, piecewise linear and nonlinear HAV models are formulated and analyzed to yield impedance characteristics in the 5-1000 Hz frequency range. A local equivalent linearization algorithm, based upon the principle of energy similarity, is implemented to simulate the nonlinear HAV models. Optimization methods are employed to identify the model parameters, such that the magnitude and phase errors between the computed and measured impedance characteristics are minimum in the entire frequency range. The effectiveness of the proposed method is demonstrated through derivations of models that correlate with the measured X-axis impedance characteristics of the hand-arm system, proposed by ISO. The results of the study show that a linear model cannot predict the impedance characteristics in the entire frequency range, while a piecewise linear model yields an accurate estimation.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Rakheja S,Gurram R,Gouw GJdoi
10.1016/0021-9290(93)90073-nsubject
Has Abstractpub_date
1993-10-01 00:00:00pages
1253-60issue
10eissn
0021-9290issn
1873-2380pii
0021-9290(93)90073-Njournal_volume
26pub_type
杂志文章abstract：:The purpose of this study was to gain an improved understanding of the mechanical behavior of the intervertebral disc in the presence and absence of the vertebral endplates. Mechanical behaviors of rat caudal motion segments, vertebrae and isolated disc explants under two different permeability conditions were investi...
journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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journal_title：Journal of biomechanics
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2002-05-01 00:00:00
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pub_type： 临床试验,杂志文章
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2001-03-01 00:00:00
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journal_title：Journal of biomechanics
pub_type： 杂志文章
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更新日期：2010-02-10 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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