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Modal parameters of the human hand-arm using finite element and operational modal analysis

机译：基于有限元和操作模态分析的人体手臂模态参数

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This study presents a finite element (FE) model of the human hand-arm system to derive natural frequencies and mode shapes. The FE model is calibrated by considering modal parameters obtained from experimental vibration analyzed by using operational modal analysis (OMA) and transmissibility. Modal and harmonic analyses of the FE model are performed for two boundary conditions. The first one considers fixed shoulder condition while the second one introduces the trunk in order to permit motion of the shoulder. The results show that the natural frequencies of the second model that permits shoulder motion are comparable with those determined from measurements. Especially, the natural frequency about 12 Hz, which is corresponding to the frequency of maximum weight in ISO-5349-1 (2001), is not present in the model with fixed shoulder condition, while it appears in the second model. The results of the present study suggest that improved finite element models of the human hand-arm system may reveal hand-arm injury mechanism, the understanding of which may assist in deriving appropriate frequency weightings for the assessment of different components of the hand-arm vibration syndrome.
机译：这项研究提出了人类手臂系统的有限元（FE）模型，以推导固有频率和振型。 FE模型是通过考虑通过使用操作模态分析（OMA）和透射率分析的实验振动获得的模态参数进行校准的。对两个边界条件进行了有限元模型的模态和谐波分析。第一个考虑固定的肩膀状况，而第二个考虑躯干以允许肩膀运动。结果表明，允许肩部运动的第二个模型的固有频率与测量值可比。尤其是，在固定肩部状态的模型中不存在约12 Hz的固有频率，该频率对应于ISO-5349-1（2001）中最大重量的频率，而在第二个模型中却出现了。本研究结果表明，改进的人手系统有限元模型可以揭示人手受伤的机制，对人手受伤的机理的理解可能有助于推导适当的频率权重，以评估人手振动的不同成分。综合症。

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