about OpenFOAM rigidbody motion lib

dam · January 3, 2024, 06:52

Hello everyone,
How to get the center of mass of an object when using the rigidbody library.
The log file output only： Centre of rotation,Orientation, Linear velocity,Angular velocity.

German-A · January 3, 2024, 16:58

if you don’t know how to do it through the library, just load the object into any CAD and it will calculate the center of mass. If there is a dynamic environment inside the body or the body mass is not constant, then select several stationary states of the object and load it into CAD

dam · January 3, 2024, 20:49

Quote:

Originally Posted by German-A

if you don’t know how to do it through the library, just load the object into any CAD and it will calculate the center of mass. If there is a dynamic environment inside the body or the body mass is not constant, then select several stationary states of the object and load it into CAD

Thank you for your answer, but I need a continuous center of mass motion to calculate his translational motion in all three directions. With CAD, only one moment can be calculated at a time. Can paraview be used to extract this data?

January 3, 2024, 06:52	about OpenFOAM rigidbody motion lib	#1
dam New Member pujunhao Join Date: Jan 2024 Posts: 2 Rep Power: 0	Hello everyone, How to get the center of mass of an object when using the rigidbody library. The log file output only： Centre of rotation,Orientation, Linear velocity,Angular velocity.

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January 3, 2024, 16:58		#2
German-A New Member Geray Join Date: Jan 2024 Posts: 2 Rep Power: 0	if you don’t know how to do it through the library, just load the object into any CAD and it will calculate the center of mass. If there is a dynamic environment inside the body or the body mass is not constant, then select several stationary states of the object and load it into CAD