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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=1739139557-SBsW99OLrJvL4suF9FjN75It2KkY5EZf-0-a916873134a79d8101dd0e942569667c)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000399.jpg?sign=1739139557-3JGE4764bqWxDGlrFTDVjCGKFav9wjg7-0-6190d1d2942e9e0208d35243acc5270f)
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=1739139557-kVLjGIyvNLgmGo0GEJSv3jsYFb3a0QqV-0-2482fb99c1f5236f411ab6a8951cbd96)
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=1739139557-Li4l51eLSHSjPVTsG7o92dZsP3saEUeM-0-2e9f7d3f3f61bd8b6d35f6cd6f8614fb)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000417.jpg?sign=1739139557-FDPiZ7nK9W24DnhrGZjjGWjHbljipa93-0-3b2413ec0db53977984273cabbab7309)
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=1739139557-XizzTpbP7qW1f8Gc7VcrJJry9behjbID-0-acdb76db8b783532b3ade83154444d5f)
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=1739139557-YcN6h8VLPZZieRAXx8xNfFyiuprw1t16-0-461f616ae5521b95bf811a42e314d03e)
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=1739139557-AUuux4YDAZO9AM3ODzBT0touc9gDaWJv-0-40f6b3ea8f5db03f94333a8c18e84547)
(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=1739139557-9cGvHBXeWuSkvYwgoR4B5adc2vu2bYQU-0-84b5861be9f1378ad52e677c940b6862)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000447.jpg?sign=1739139557-GorMIc3OJcVKMq1aupOLFrc1bKNBlcrE-0-c4b64415ce5c104c40796fe105dcb041)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000453.jpg?sign=1739139557-kmuPccKimPtwp8YeOzEjVXjcq6U1dpIH-0-e93e8d5a6e5f99f6c1bb5091d7a9515a)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000465.jpg?sign=1739139557-N1tCpbFHksqmzrFhOTvMpHprdqhwkrtj-0-9c9c92f7126dea304927dcd93420f296)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000471.jpg?sign=1739139557-aQXHmd9pSR5fRkh6DxJuBqjEe9aYJECf-0-79e3a85a9d14c0e14a0eb71726d9fb80)
![](https://epubservercos.yuewen.com/F3E36B/16499763104627206/epubprivate/OEBPS/Images/image000477.jpg?sign=1739139557-bOqmZAZ5P1PhvY7pRCHecgymr0EB4Pmv-0-f679f9a610c98d144a0b4e6597ef5eb0)
(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=1739139557-9LmUtSNpNmXtwftsdBemqglgXnI8qg0E-0-40272e23ed93e31538055e15635a704a)
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。