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首页> 外文期刊>Ergonomics >Response of the seated human body to whole-body vertical vibration: biodynamic responses to mechanical shocks
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Response of the seated human body to whole-body vertical vibration: biodynamic responses to mechanical shocks

机译：坐着的人体对全身垂直振动的响应：对机械冲击的生物动力响应

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摘要

The biodynamic response of the seated human body has been investigated with 20 males exposed to upward and downward shocks at 13 fundamental frequencies (1-16 Hz) and 18 magnitudes (up to +/-8.3 ms(-2)). For 1- and 2-degree-of-freedom models, the stiffness and damping coefficients were obtained by fitting seat acceleration waveforms predicted from the measured force to the measured seat acceleration waveform. Stiffness and damping coefficients were also obtained in the frequency domain with random vibration. The optimum stiffness and damping coefficients varied with the magnitude and the frequency of shocks. With both upward and downward shocks, the resonance frequency of the models decreased from 6.3 to 4 Hz as the vibration dose values of the shocks increased from 0.05 to 2.0 ms(-1.75). The stiffness and damping obtained from responses to shocks were correlated with, and similar to, the stiffness and damping obtained with random vibration.
机译：坐下人体的生物动力响应已被研究，其中20位男性在13个基本频率（1-16 Hz）和18个幅度（最高+/- 8.3 ms（-2））受到向上和向下的电击。对于1自由度和2自由度模型，通过将根据测得的力预测的座椅加速度波形拟合到测得的座椅加速度波形中来获得刚度​​和阻尼系数。在随机振动的频域中也获得了刚度和阻尼系数。最佳刚度和阻尼系数随冲击的幅度和频率而变化。对于向上和向下的冲击，随着冲击的振动剂量值从0.05毫秒增加到2.0毫秒（-1.75），模型的共振频率从6.3降低到4 Hz。通过对冲击的响应获得的刚度和阻尼与通过随机振动获得的刚度和阻尼相关，并且相似。

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  • 来源
    《Ergonomics》 |2017年第3期|333-346|共14页
  • 作者

    Zhou Zhen; Griffin Michael J.;

  • 作者单位

    Univ Southampton, Human Factors Res Unit, Inst Sound & Vibrat Res, Southampton, Hants, England;

    Univ Southampton, Human Factors Res Unit, Inst Sound & Vibrat Res, Southampton, Hants, England;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biodynamics; mechanical shocks; apparent mass; force; nonlinearity;

    机译：生物力学;机械冲击;表观质量;力;非线性;

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