I'm very new to PreView/FEBio and could use some clarification on appropriate usage of all the model settings. I have a tibia model with 170,811 surfaces, 21,921 edges, and 11,779 nodes. When I look at the mesh settings it says it is an editable mesh. This means it is a volume mesh, correct? How can I scale the model to the tibia length of a specific subject?
I am attempting to determine the maximal principle strains on the bone when a force is applied. I would like to constrain the proximal and apply the force to the distal end. From perusing other posts in the forum, I learned that boundary conditions should be applied to deformable bodies, so I should constrain the x, y, and z displacement of the tibial plateau as a boundary condition, correct? When I try to select the surfaces on the proximal or distal end to do this, an entire cross-section of the bone gets selected rather than just the surfaces. An alternative I've tried is selecting a small cross section at the end to apply the conditions to but I'm not sure if this will affect the analysis.
What steps are most appropriate to apply the load? I've explored physics->add analysis step->structural mechanics, but then it's not clear how to proceed. Using the static option of the structural mechanics makes the most sense to me, but then I don't understand how best to adjust the time settings.
Generally regarding Boundary Conditions, Initial Conditions, Constraints, and Steps-when and how do you decide which to use? I understand that Boundary Conditions are for deformable bodies while Constraints are for rigid bodies from a previous post, but besides that I don't understand how to differentiate the use of these.
I know this is a lot of questions and I really appreciate any assistance and clarification you can provide.
Jessica
I am attempting to determine the maximal principle strains on the bone when a force is applied. I would like to constrain the proximal and apply the force to the distal end. From perusing other posts in the forum, I learned that boundary conditions should be applied to deformable bodies, so I should constrain the x, y, and z displacement of the tibial plateau as a boundary condition, correct? When I try to select the surfaces on the proximal or distal end to do this, an entire cross-section of the bone gets selected rather than just the surfaces. An alternative I've tried is selecting a small cross section at the end to apply the conditions to but I'm not sure if this will affect the analysis.
What steps are most appropriate to apply the load? I've explored physics->add analysis step->structural mechanics, but then it's not clear how to proceed. Using the static option of the structural mechanics makes the most sense to me, but then I don't understand how best to adjust the time settings.
Generally regarding Boundary Conditions, Initial Conditions, Constraints, and Steps-when and how do you decide which to use? I understand that Boundary Conditions are for deformable bodies while Constraints are for rigid bodies from a previous post, but besides that I don't understand how to differentiate the use of these.
I know this is a lot of questions and I really appreciate any assistance and clarification you can provide.
Jessica
Comment