图示机构中,作用有力偶矩为M的力偶和水平力P。机构尺寸如图示。试求机构在图示位置平衡时,M与P的关系为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201805/b60df8f36a094da6836b108873495e85.png
举一反三
- 所示机构中,当杆 OC 绕 O 摆动时,套筒 A 沿杆 OC 自由滑动,并带动杆 AB 在铅垂滑道内移动。已知 OK=l ,杆 OC 上作用一力偶矩为 M 的力偶, B 点作用一铅垂力 P ,各处摩擦不计。试求在图示位置平衡时, M 与 P 之间的关系为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201805/48062ef4b4d540c8b96b967e00180812.png
- 组合梁如图示。已知q=2kN/m , F=10kN , 求固定端 A 处的约束力偶 M A 等于 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201805/3dc88c1d09c94a299948b91b63cfed38.png
- 曲柄连杆活塞机构的活塞上受力 F=400N ,不计所有构件的重量。为能使机构在图示位置平衡,则在曲柄上加的力偶矩 M 应等于 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201805/f4dd4a5aba5d46eb8db4abe14baffe19.png
- 图示曲柄连杆机构,已知曲柄OA长L,重量不计,连杆AB长2L,重P,受矩为M的力偶和水平力F的作用,在图示位置平衡。若用虚位移原理求解,则必要的虚位移之间的关系为___________,力F的大小为_____________________。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/be06434307bd424abfc4ebfe02661f7a.png
- 图示曲柄连杆机构,已知曲柄OA长L,重量不计,连杆AB长2L,重P,受矩为M的力偶和水平力F的作用,在图示位置平衡。若用虚位移原理求解,则必要的虚位移之间的关系为___________,力F的大小为_____________________。<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/be06434307bd424abfc4ebfe02661f7a.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/b8e7b964d1c84aeca7b22ddef4de87a2.png" />;<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/a584946cde17410c945d6611ff2113b5.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/1aaef24e28ee477ab25dae0a400bf23f.png" />;<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/f3b395453e1d48bdadff2e37dfbbb626.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/be37912822f0451bb15639b7fa0589f1.png" />;<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/6d1112b5c1b4446b93578138388ed79f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/89b7bcef6b51410cb624a654747d56ee.png" />;<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/0e2b78f437914a1eb8327d13185eaedf.png" />