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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=1738846058-hcHTqG5f8mqwtj6IkPWDWO7NfmHTzBWr-0-bc3d1b6ced125da1d3d3b5c0e5e6091a)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000399.jpg?sign=1738846058-G57BAMjHPbdx9QeYunAv9QGspb30CgVs-0-ae1b24cd4bd178956896933f733c75f1)
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=1738846058-QHLD3DfI1y6xiF318gtFLI2tSaxEQbKU-0-5b3d1461c38f785ba5c2f498948185fc)
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=1738846058-gh74v2HoYnu37dXu6g3mlGbhS0bH2Pg3-0-e056519728bcccff6a807357eaa6973c)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000417.jpg?sign=1738846058-n4snss48FKwvpidmfqC2yZmEFs0wuCJX-0-62b8bbe1dfd8652109f1844958501383)
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=1738846058-7fKojM7wbFQwAr8XraTcDGfWMdhNDlNC-0-e77c06d36c7ded3d68b9d9673294ad43)
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=1738846058-AzV02dIo3gNeptVGxpusqdy6w3HO1f8w-0-3974d8754fcea5a0d7618cc4d715bb2d)
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=1738846058-O8nVNwrPFxp7sZ1zA01eGt6lilOMd17G-0-71e17b6123fad17b97d1d4b5725df513)
(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=1738846058-l6TMJJ7SNwIJy8FGSPtnudUsaAc0H95z-0-ba72d1d6912c2b5cf09656bac3d78a00)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000447.jpg?sign=1738846058-Xwxw7wfSBHfIEefMVXl8UskWzCySM6lU-0-3c7bf9327962ce9a9616226f048a45f0)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000453.jpg?sign=1738846058-MMc8qqgpGCfdCFkWkIEfyDSKYkdcF7yK-0-ca0628bb25677663f54e4bc48dca6a10)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000465.jpg?sign=1738846058-3pcW3OHQpuYD29FVwgUoo0gYTRXn4JVq-0-5ed9053dcd39e6e225e8a2abe8479982)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000471.jpg?sign=1738846058-F4RnMSnC8SyYFYuXx1GWjuyxHZyLH9vl-0-3b6f8a55042eb3a63f5980cb446e3b53)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000477.jpg?sign=1738846058-VIp87BBvCAUoHCXth0AYcvf1zIiTwIVl-0-cc59284751a2f065b8cc1fc2943af51d)
(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=1738846058-27a9pkQMOPJL2kVLIJXSOogkkgAbqvJz-0-e26bcb24c5535edc7f8ac640aa22793d)
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。