Elmer Discussion Forum

Hello Peter, Thank you very much for your work, i've had a glance on it. My initial thoughts are: - At "Variable Hinge" i need to read the source, for the circle finder algo. - Displacemante Curve is promising. It means a lot, that you reacted so quickly, and made something that potention...

Hi, One of my Friend made a simulation in ansys with rigidy body dynamics and he got 5.82 s as period time to the Hinge. Ansys Hinge T = 5.82 s I've got: Timestep Sizes(1) = 0.001 Sliding Hinge T = 5020 ms Squre Constrained Hinge T = 5815 ms Circe Constrained Hinge T = 5821 ms Experinces so far: - A...

Hi, Thanks Peter for the fast response. I would gladly test it. I think i did some progress, based on you explanation, Kevin's test, and on my own experience. N-T Displacement can't handle a non-linear constraint, so do N-T Displacement Limit. So i thought its time to test Cartesian Displacement, an...

Hello Kevin, Thank you for your time and effort. Its defenetly the N-T BC's D = 0 part. If you dont use N-T, and set some Force 2 = 400000.0, then it might flies up, but the strange stress doesnt happen in the hinge. So if i could replace, the N-T part with some Force 1,2 = Variable A,B; Real MATC &...

Hi Rich, I was maybe confusing so sorry. The main problem is to rotate the Hinge around it's left circle. For this i tried to get workarounds. What i posted in the attachment is the main problem, because if Normal-Tangential Displacment would work as i pictured, i wouldn't do the other 3. Yes you ar...

Hi Peter, Peter thanks for the advise. I tried Boundary Condition 4 Name = "LeftCircle" Target Boundaries(4) = 5 6 7 8 Normal-Tangential Displacement = True Displacement 1 Lower Limit = Real 0.0 End and Boundary Condition 4 Name = "LeftCircle" Target Boundaries(4) = 5 6 7 8 Norma...

Dear Elmer Community, I'm new to FEM, and with Elmer FEM. I've got a problem, that I couldn't overcome alone. I need to rotate a body in a force field in a transient simulation around an axis. What did I try so far : - Extra mesh node in 1,1,0 and displacement 1,2,3 = 0 BC. Here i should have chang...