Ball and socket Joint - Gap coming into contact
Ball and socket Joint - Gap coming into contact
(OP)
Hello all, I would really appreciate some advice.
Please find attached an image of a model I am working on. I have attached an cross section image of the file called IMAGE_1 at http://my.engineering.com/pg/file/OptiEng.
This is a 3D ball and socket joint analysis, with an initial clearance between the ball and socket. I have 3 parts in the model:
Part 1: Rigid socket holder (with reference point)
Part 2: Socket (deformable)
Part 3: Ball (deformable) - Fully constrained at pin the bottom of the ball.
1) STEP 1: I am trying to initially make the ball and socket contact one another by applying a displacement to the reference point of part 1.
2) STEP 2: I am then trying to apply a pressure to the top of PART 1 surface. To assess the stress at the contact point between the ball and the socket parts.
My analysis is not completing and keeps aborting, I am wondering if this is because I am using Abaqus standard and my analysis involves impact? I could try adjusting model to be in contact before the analysis, but I am trying to develop the model to assess the impact so would like to keep the initial gap if possible.
Thanks
Please find attached an image of a model I am working on. I have attached an cross section image of the file called IMAGE_1 at http://my.engineering.com/pg/file/OptiEng.
This is a 3D ball and socket joint analysis, with an initial clearance between the ball and socket. I have 3 parts in the model:
Part 1: Rigid socket holder (with reference point)
Part 2: Socket (deformable)
Part 3: Ball (deformable) - Fully constrained at pin the bottom of the ball.
1) STEP 1: I am trying to initially make the ball and socket contact one another by applying a displacement to the reference point of part 1.
2) STEP 2: I am then trying to apply a pressure to the top of PART 1 surface. To assess the stress at the contact point between the ball and the socket parts.
My analysis is not completing and keeps aborting, I am wondering if this is because I am using Abaqus standard and my analysis involves impact? I could try adjusting model to be in contact before the analysis, but I am trying to develop the model to assess the impact so would like to keep the initial gap if possible.
Thanks





RE: Ball and socket Joint - Gap coming into contact
Rob Stupplebeen
RE: Ball and socket Joint - Gap coming into contact
RE: Ball and socket Joint - Gap coming into contact
I have a similar task. I must calculated wear (in x milion cycles) in UHMWPE Socket (acetabulum cup), so I create the hip joint model, but only two parts: socket and head. I run job and calculated wear for 2 mln cycle, but I have a problem, because I must modify the geometry of the wear values at each node. I have not any idea, how to do. I try edit mesh, but it is not good solution. Next I try orphan mesh and delete elements, but the problem is with contact, and the result is different than result from part - no orphan mesh.
How do you calculated wear and update geometry, if you will calculated.
P.S. Sorry for my english.
Best regards,
zabavip