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第5章 常用力学公式
5.1 理论力学基本公式
5.1.1 静力学基本公式
表1-5-1 平面汇交力系、平面任意力系和空间力系的合成、简化及平衡条件
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000387.jpg?sign=1739301889-i6QOFVtt2QjA7dpD4FKTAkKRf4FNkjmB-0-5ac0c8bfd1311f71d5a554fa614d3204)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000399.jpg?sign=1739301889-1q0ehaZ8f7xI8df2k9z69SWSSlpt8sAV-0-79381a942bfa00827e36ea509e02aa82)
表1-5-2 力矩及力偶矩的计算
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000405.jpg?sign=1739301889-WUtaQlVRWsAOQWSaquISc5SUH95c5EeP-0-e979e6728349364b7d1dd8b06efbf8e5)
5.1.2 运动学基本公式
表1-5-3 运动学基本公式
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000411.jpg?sign=1739301889-ODwhHjX0lRVpNaLSSrAI1EI6K8xzNu26-0-c951d6f31484270b6b54771b27e91845)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000417.jpg?sign=1739301889-lam3PhaZykJckNH0fPrU4lHCMjr1Ola5-0-af15b368a168b55a3e6f72f669d6b1f1)
表1-5-4 刚体运动的常用计算式
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000423.jpg?sign=1739301889-UhueICKZwTmDZ3AcDv7D6G1RANOpopDy-0-0a76b1dd2733d9c3cc943ce36f7338ef)
5.1.3 动力学基本公式
表1-5-5 动力学基本公式
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000429.jpg?sign=1739301889-9kKg0DP34ag2vkcZ0NZNJj8XGjDONbuq-0-ef656d823e09272d64e8175fd08db3d2)
5.1.4 常用转动惯量公式
(1)机械传动中转动惯量的换算(表1-5-6)
表1-5-6 机械传动中转动惯量的换算
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000435.jpg?sign=1739301889-kgQt6NSw7OMc4QjoX8l7wOrUV1Xq6klv-0-6e468fb57399867ecf9340947645ddde)
(2)一般物体旋转时的转动惯量(表1-5-7)
表1-5-7 一般物体旋转时的转动惯量
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000441.jpg?sign=1739301889-ihAO1Tfp5eWkUjov1ApQKPT82073404q-0-e466b6935acdea1b5ec620ff547ef68d)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000447.jpg?sign=1739301889-4sQmN5kG4j3t8yZuvU5zOXqf4EGixrZC-0-2504d08f0050576a09a955017653a184)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000453.jpg?sign=1739301889-yNVq1P9x9j1zv4hSpf1mfeSBaN6mjBne-0-47b91f12c03e5268137e2fb7b64dd015)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000465.jpg?sign=1739301889-zwMfSjlJR0gq0fMGPhD42cWr7rq3hTaz-0-b9abffcd002c6a95f4437024cc9622ba)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000471.jpg?sign=1739301889-ew0WaY3QxierM93plep6SJYAmjfbzb1g-0-42da4da49e622bf282f5b02190eea739)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000477.jpg?sign=1739301889-NyeZkVPZrTKmSbYiK8FoMC0d6sDBJj2M-0-cac4ac9af4860913db4d7bcced424595)
(3)常用旋转体的转动惯量(表1-5-8)
表1-5-8 常用旋转体的转动惯量
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000483.jpg?sign=1739301889-PW6Bgt6bgqhVeSQw0JVG1G0S1LUQsxLO-0-6aa16674696519df78fe8e06e9b10aeb)
注:表中部分零件只给出主要尺寸,计算出的转动惯量是近似的。