Applying an external force to a moving object

GeZi · September 10, 2023, 23:32

Hi, REEF3D team
Thanks to your software. During the process of using, I have a question, it seems that the X option can only add the gravity of the moving object. If I want to apply an external concentrated force or uniformly distributed load on the moving object, can it be achieved?

kamath · September 11, 2023, 01:03

check out X 210/ X 211 / X 221. These provide external forcing on a floating body

GeZi · September 11, 2023, 02:26

Thank you for your reply, Professor Kamath. However, it seems that X210 and X211 describe the three linear velocities and three angular velocities of object motion. What I want to achieve is to apply a concentrated force to a certain point of an object, including the position of the point and the magnitude and direction of the force. Can this be achieved? If possible, could you provide a concise description?

Additionally, what do the six inputs in X211 represent? What is the meaning of column S in the file?

GeZi · September 11, 2023, 02:28

Quote:

Originally Posted by kamath

check out X 210/ X 211 / X 221. These provide external forcing on a floating body

Thank you for your reply, Professor Kamath. However, it seems that X210 and X211 describe the three linear velocities and three angular velocities of object motion. What I want to achieve is to apply a concentrated force to a certain point of an object, including the position of the point and the magnitude and direction of the force. Can this be achieved? If possible, could you provide a concise description?

Additionally, what do the six inputs in X211 represent? What is the meaning of column S in the file?

valgrinda · September 11, 2023, 03:30

What type of situation are you thinking of?

Right now it is not implemented, but it should be possible to do that.

GeZi · September 11, 2023, 03:36

Quote:

Originally Posted by valgrinda

What type of situation are you thinking of?

Right now it is not implemented, but it should be possible to do that.

I am trying to simulate the movement of an object with external concentrated forces and bending moments when scour leads to insufficient burial depth.Is it impossible for external concentrated forces and bending moments to be applied to the object?

valgrinda · September 12, 2023, 06:44

It sounds to me a bit too complex for the current sediment algorithm.....

September 10, 2023, 23:32	Applying an external force to a moving object	#1
GeZi New Member GeZi Join Date: Jul 2023 Posts: 23 Rep Power: 2	Hi, REEF3D team Thanks to your software. During the process of using, I have a question, it seems that the X option can only add the gravity of the moving object. If I want to apply an external concentrated force or uniformly distributed load on the moving object, can it be achieved?

September 11, 2023, 01:03		#2
kamath Senior Member Arun Kamath Join Date: Nov 2014 Location: Trondheim, Norway Posts: 265 Rep Power: 13	check out X 210/ X 211 / X 221. These provide external forcing on a floating body __________________ Arun X years with REEF3D

September 11, 2023, 03:30		#5
valgrinda Super Moderator Hans Bihs Join Date: Jun 2009 Location: Trondheim, Norway Posts: 377 Rep Power: 18	What type of situation are you thinking of? Right now it is not implemented, but it should be possible to do that. __________________ Hans Bihs Team REEF3D www.reef3d.com

September 12, 2023, 06:44		#7
valgrinda Super Moderator Hans Bihs Join Date: Jun 2009 Location: Trondheim, Norway Posts: 377 Rep Power: 18	It sounds to me a bit too complex for the current sediment algorithm..... __________________ Hans Bihs Team REEF3D www.reef3d.com

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September 11, 2023, 02:26		#3
GeZi New Member GeZi Join Date: Jul 2023 Posts: 23 Rep Power: 2	Thank you for your reply, Professor Kamath. However, it seems that X210 and X211 describe the three linear velocities and three angular velocities of object motion. What I want to achieve is to apply a concentrated force to a certain point of an object, including the position of the point and the magnitude and direction of the force. Can this be achieved? If possible, could you provide a concise description? Additionally, what do the six inputs in X211 represent? What is the meaning of column S in the file?