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本工作采用电子振荡线路模型对人体弹射过载耐力进行研究。人体是弹性体,他受到弹射力作用后的运动规律与电子振荡线路的电流运动相似,都可用相同的微分方程表达,只要它们的固有频率和阻尼比相同,电子模型即可代替人体进行实验。电子模型主要参数为带宽0～100多Hz,主固有频率10.5Hz,阻尼比0.3。将模拟的弹射信号输入到模型中去,即可得输出信号,它的波幅即代表作用在人体上的过载值,然后根据人体脊椎骨耐压强度,即可获得输入波形与耐力之间的关系。通过一系列实验,求得输入不同波形时人体的耐力数据和耐力曲线。
This work uses the electronic oscillation line model to study the human overloaded stamina. The human body is an elastic body. The motion law of the human body after being ejected is similar to the current motion of the electron oscillating circuit. Both can be expressed by the same differential equation. The electronic model can replace the human body experiment as long as their natural frequencies and damping ratios are the same. The main parameters of the electronic model for the bandwidth of 0 to more than 100 Hz, the main natural frequency 10.5Hz, 0.3 damping ratio. The simulated ejection signal is input to the model to obtain the output signal whose amplitude represents the overload value acting on the human body and then the relationship between the input waveform and endurance can be obtained according to the compressive strength of the human vertebra. Through a series of experiments, the body of the endurance data and endurance curve obtained when different waveforms are input.