| 刚体做平面平行运动时动量矩定理对瞬时轴成立的条件 |
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| 引用本文： | 高钦翔,田维钊.刚体做平面平行运动时动量矩定理对瞬时轴成立的条件[J].贵州师范大学学报(自然科学版),2001,19(4):85-87. |
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| 作者姓名： | 高钦翔 田维钊 |
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| 作者单位： | 遵义师范学院,物理系,贵州,遵义,563002 |
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| 摘 要： | 采用极迹的几何方法 ,导出了刚体做平面平行运动时 ,坐标原点取在瞬时中心 ,其转轴过瞬心且垂直于参考面时动量矩定理本来形式d(Iwz)dt =Mz 成立的条件 ,即几何判据是瞬心到质心的距离在运动中始终保持不变
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| 关 键 词： | 刚体 动量矩定量 瞬时转轴 本体极迹 空间极迹 |
| 文章编号： | 1007-5570(2001)04-0085-03 |
| 修稿时间： | 2001年4月12日 |
The established conditions of moment of momentum theorem to instantaneous rotation axis when rigid body doing paralleled planar moves |
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| GAO Qin-xiang,TIAN Wei-zhao.The established conditions of moment of momentum theorem to instantaneous rotation axis when rigid body doing paralleled planar moves[J].Journal of Guizhou Normal University(Natural Sciences),2001,19(4):85-87. |
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| Authors: | GAO Qin-xiang TIAN Wei-zhao |
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| Abstract: | According to the geometrical method of polhode, this paper deduces the established conditions of the original form of moment of momentum theoremd(Iw z)dt=M z under the conditions that the coordinate origin sets up in the instantaneous center and the rotation axis passes through it and is vertical to the reference plane when rigid body is on the paralleled planar motion. The geometrical priterion is that the distance between the instantaneous center and the center of mass must be constant. |
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| Keywords: | rigid body moment of momentum theorem instantaneous rotation axis condition |
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