Learning Forum

[Priyatham_Kareti]

I am trying to find the distance between the centre axis to the point where the resultant force is acting on(basically how much is the reaction force is offset from the mid axis) . Is there a method to locate the position of the resultant reaction force.

[1shan]

The summation points for force and moment reactions are generally at the centroid of scoped geometry. One way to find out the equivalent point of application of the force could be to use a moment probe and scope it to the desired entity. If you use the default settings (moment reaction>summation - centroid) then moments are calculated at centroid. Once you have the moment value you could calculate the offset distance by using M = F* d (you have F from force probe). Also, you have the liberty to change summation - orientation system. This will change the moment location to the origin of defined coordinate system. Once the origin coincides with the point of application, the moment should be zero.
Regards Ishan.

[Priyatham_Kareti]

Hi Ishan Thanks for the reply. After your reply, I did understand the concept behind it and tired to implement it .
I din't get my expected result, still figuring out on what surface I have to find the moment and the corresponding force for it. I am not able to select the moment for the entire body (only able to the surface) .
Once again thanks for the reply
Regards
Priyatham K

[peteroznewman]

The surface is the flat surface used in the contact pair. Create a Coordinate System and select that flat surface. Name that coordinate system CP. The Coordinate System will be created at the centroid of that flat surface. After it is created, change the definition of the origin from Geometry to Global Coordinates. Now you can reposition the CP coordinate system origin by typing in numbers to move it to a location at the center of pressure of the contact. When you request a moment reaction, change the default and select the CP coordinate system. The moment should come out close to zero.
Follow the rest of 's advice to drive it to be as small as you care to. When you request the Force reaction and choose the CP coordinate system, the arrow should look like what you want to see.

[Priyatham_Kareti]

Thanks I have understood on how to solve it now .
Regards
Priyatham K