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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=1739279890-F0jyUanv0gGaQ3bYEKQJ9T8d2Og8KiRg-0-920b291f7503cb333283f88efbb37fc6)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000399.jpg?sign=1739279890-i680s0woHRJFrMItSvLweS2tun35FueI-0-9a0de6d7ada516da7a1558f25c09f95f)
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=1739279890-zJfQxbNYpuOGYH9ks8F9sFeZCY79MEkx-0-8aa4aa7f3e3122e0ecc3ea1375fb5d6b)
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=1739279890-Gm5XqDkyBPLaMIelRSQf0TOTdzY6gMqO-0-bed5a26facf95e4b37507a9434354cfb)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000417.jpg?sign=1739279890-Y9EI9jWb8BytsEUjJMIrEyodR3P39SuL-0-eca0d477e0fe47c8a92bebac0f88957a)
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=1739279890-FYwHyHj8OIF7PTSWERxNraNHyVqqZMrL-0-986ab8b47ea3467afb3b7c054b94c406)
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=1739279890-zgcZQtwa2mlqYw3rubrYsmQI8j9bN4wN-0-0167227837b043dbe4d7caa0b23dec1b)
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=1739279890-PE82k1Jiv92J6t7kgaMrHzKWqBIphymC-0-5640a87b4658672f0918bb709070a737)
(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=1739279890-mKN5N4GPVd87kMQg8HlNfPkw5F7YYJNp-0-c213e6040dde2e20ad32acd0de3a3e9c)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000447.jpg?sign=1739279890-RpfJBvdITP7Tsyg8uylleqSaTspYF1VN-0-3bcd0d40849208236e2a68c9d0d826fd)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000453.jpg?sign=1739279890-NSGazlAg5nVoFPoOD4jZ7rs5J0QzIJkM-0-ce1116489037bf1034c026e1132d2536)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000465.jpg?sign=1739279890-zrDQ7BzhbOmagrzL6EYvwG01VlnwhkMU-0-7aa2c6e2a12a78c17711111bd6c4d06e)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000471.jpg?sign=1739279890-6nWgFEhvlFVEvgbqv62Lc1d2ghQWRDks-0-d10c5c2c5aa42b914edd44d4fd3ff9a5)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000477.jpg?sign=1739279890-S8KWYP7cGuvCAnHmTTjMAccYIDlvqgxY-0-27c25480d1d7eb51636fff352f3528d0)
(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=1739279890-7VFpqXaCMqkp2bHzhmpUKzHXcvdEAsSe-0-0999ef2f8d141fbb2ae6ce679faed876)
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。