The discussion revolves around the setup of loading conditions for a horizontally supported cylindrical tube in a simulation environment, specifically focusing on how to apply gravitational loads correctly within the modeling software Abaqus. The scope includes technical aspects of modeling and simulation in engineering contexts.
Participants generally agree on the uniform distribution of gravitational load but have differing views on the modeling approach and coordinate systems to use, indicating that the discussion remains unresolved regarding the best method for applying the load.
There are limitations regarding the assumptions made about the coordinate systems and the specific modeling techniques being employed, which may affect the application of gravitational loads.
The cylinder is horizontal and you are using cylindrical coordinates, correct? So the z axis of the cylindrical coordinate system is horizontal. But, gravity is acting downward. Can you represent the direction of gravity in terms of the circumferential coordinate θ and the cylindrical coordinate unit vectors?roldy said:That is correct. I just wasn't sure how to set up the loading conditions on a cylindrical surface for gravity.
The (distributed) gravitational force per unit volume is equal to ρg, where ρ is the density.roldy said:I am not using cylindrical coordinates, I don't want to have to do any coordinate transformations afterwards. I am using a 3D model that I created.