猴体振动特性的实验研究  

Testing Research of Dynamic Characters of Monkeys

作　　者：戴诗亮[1] 汪芳子[1] 崔健[1] 由广兴 

机构地区：[1]清华大学工程力学系,北京航天医学工程研究所

出　　处：《生物医学工程学杂志》1996年第3期230-234,共5页Journal of Biomedical Engineering

基　　金：国家教委开放实验室基金

摘　　要：本文介绍了猴体随机振动、正弦扫频振动和锤击振动实验方法和结果。４只４．０～５．５ｋｇ的猴承受坐姿头尾向振动，测量了猴头，胸、腹、肝、胃、腰椎和骶骨的加速度响应，求得相对台面和骶骨的传递函数。结果表明猴体动力特性在一定条件下可近似看作单自由度或双自由度系统，而且共振频率随着振动Ｇ值增大而减小，得到了在较大振动范围内猴体刚度非线性明显而阻尼非线性不明显的结论。为猴体建立非线性动力学模型提供了数据，可供人体振动防护研究参考。Four 4. 0-4. 5kg/weight monkeys were exposed to random vibration, sine frequency sweep vibration and half--sine puls in head-tail direction in sitting petition. Vibration acceleration response of the head, chest,abdomen, liver, stomach, L, and sacrum were measured. The tranfer function for the table and for the sacrumfrom these tests were given. The results show that the dynamic characters may be approached with 'one-degreeof-freedom' or ' t wo -deg ree -of- freedom ' model in a certain cond it ion. It was o bserved that the resonance freque netes. decreased with the increase of exciting strength. We came to the conclusions that the stiffness coefficient descreases with the increase of exciting strength and that damping ratio is a constant in a certain range of exciting level. Our work provides the date for non-linearity vibration model of monkey and is useful for Human protection.

关 键 词：猴体振动 振动实验 动态响应 实验研究 

分 类 号：R318.01[医药卫生—生物医学工程] R857.14[医药卫生—基础医学]