几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量

几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 (http://www.dimcax.com/hust/index.php)
-   精密机械 (http://www.dimcax.com/hust/forumdisplay.php?f=179)
-   -   about torque (http://www.dimcax.com/hust/showthread.php?t=20437)

huangyhg 2009-09-05 10:11 PM

about torque
 
about torque
hi,
torque= ang.accleration x moment of innertia
(nm ) =deg/sec.sq x nm2
but from above conversion,how to reach to get nm
& also if we convert deg/sec.sq into rad/sec.sq,
value will be reduced by 57 times
my question how to get .....nm
thanx in before
john
find a job or post a job opening
your units are not correct.
the units for polar moment of inertia are: kg*m^2
the units for angular accel. are: rad/sec^2
radians are not a true engineering unit so they do not enter into cancelling out. that leaves you with:
(kg*m^2)/sec^2 = n*m
hi fredgravin
heartly thankful to you for giving this valuable
information
with warm regards
john
fredgarvin
the radian is an engineering unit. degrees are not.
the radian measure of an angle is defined as the arclength divided by the radius of the arc. it is thus dimensionless, and hence disappears when dimensional analysis is performed to determine the resulting units of a formula.
take care.
ed.


所有的时间均为北京时间。 现在的时间是 11:08 AM.