"Too many attempts made for this increment Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists." How can I fix this error? Can you help me please???
Nice Tutorial. I have a few questions on this: 1. The plate thickness is 1 mm for both the supports as well as the main plates. Why have we then adjuct the Boundary condition to 1 mm? Shouldn't it be 2 mm instead? 2. Can we place the Reference Point on the surface(0 mm) or below the surface (say -10 mm) ?I suppose it will give same result?
Ok, I figured out the reason for 1mm. You are right. The plate thickness is 1 mm from middle surface, so both support and plate thicknesses at the contact side add up to give 1mm, hence setting of 9 mm. Kindly give reasons for point 2.
Just to comment that Abaqus by default uses the "Node-To-Surface" discretization together with a "Finite Sliding" tracking approach and, this configuration does not take in account shess thickness in formulation. On the other side, by chosing "Surface-To_Surface" formulation (not default) it does take in account thickness by default, best regards and thanks for the video. Nevertheless... imagine that for any reason whether is because you dont know exactly the initial clearance of the contact or because you have several contacts, it is not feasible to stablish the initial contact position by means of a separate step. How would you avoid the rigid body motion? thanks
Hi Jordi Parra Porcar, Thank you very much for your comment and your question. === First of all, you are totally right. From the "solver" point of view, the *CONTACT PAIR will use a Node-To-Surface discretization method (and will remain in the general case, i.e. Finite Sliding formulation). When I say from the solver point of view, it means when the INPUT file is manually written. And effectively, in all the other cases, the shells thickness are by default taken into account except in that particular case. However, when using Abaqus/CAE, the default for Contact Pair, which is called Surface-To-Surface Contact (Standard or Explicit accordingly) is a Surface-To-Surface discretization method. In that case, the default behavior is to consider the shell! === About your question In a static analysis, Abaqus needs to equilibrate the external and the internal efforts. If for some reason, an external load has no opposing reaction loads, it cannot be done and the analysis crashes . The idea of driving with a displacment is to initialize the contacts. Closing the existing gaps will create counter forces and then only, Abaqus will be able to equilibrate the static analysis. It is not because you do not know the "exact" gap between the components (even if you could measure it somehow...) that you cannot drive the first step in displacement. I mean the idea is to initialize the contacts, so, you need to go "far" enough to provoke closing contacts, even a bit further than the original gap to close. If for some reasons, you cannot drive in displacement, you need to provide to the FEM a counter effort. You can do that with little springs around the part which needs to be hold. the same idea is to use little dampers or the option STABILIZE which generates a global viscous damping around the components. In all those cases, since you introduce artificial forces, you need to postprocess their values, they should absolutely decrease before the end of the step, and will say as soon as the contacts starts to be established.
Nice music too. Felt like I was in a video game the whole time. Thanks for the video. Very helpful.
Thank you so much. It is a very kind comment
this really helped me with my final year engineering project!
+Angus Macrae
Very great to hear that!
Thanks for your good explanation.
Could you please tell me how to determine the contact area between different parts of an assembly using Abaqus software in case of "GENERAL CONTACT" ?
thank you for extra informations but why did you put the plate 10 mm above at the first step ?
thank you
"Too many attempts made for this increment
Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists."
How can I fix this error? Can you help me please???
other than contact, background music is very good. it felt like abaqus is being operated in a criminal conspiracy environment.
How do i create a contact bewteen a rigid body edge and the surface of a deformable body? Many thanks in advance
Nice Tutorial.
I have a few questions on this:
1. The plate thickness is 1 mm for both the supports as well as the main plates. Why have we then adjuct the Boundary condition to 1 mm? Shouldn't it be 2 mm instead?
2. Can we place the Reference Point on the surface(0 mm) or below the surface (say -10 mm) ?I suppose it will give same result?
Ok, I figured out the reason for 1mm. You are right. The plate thickness is 1 mm from middle surface, so both support and plate thicknesses at the contact side add up to give 1mm, hence setting of 9 mm.
Kindly give reasons for point 2.
can you show procedure of encased stone column in abaqus
Just to comment that Abaqus by default uses the "Node-To-Surface" discretization together with a "Finite Sliding" tracking approach and, this configuration does not take in account shess thickness in formulation. On the other side, by chosing "Surface-To_Surface" formulation (not default) it does take in account thickness by default, best regards and thanks for the video. Nevertheless... imagine that for any reason whether is because you dont know exactly the initial clearance of the contact or because you have several contacts, it is not feasible to stablish the initial contact position by means of a separate step. How would you avoid the rigid body motion? thanks
Hi Jordi Parra Porcar,
Thank you very much for your comment and your question.
=== First of all, you are totally right. From the "solver" point of view, the *CONTACT PAIR will use a Node-To-Surface discretization method (and will remain in the general case, i.e. Finite Sliding formulation). When I say from the solver point of view, it means when the INPUT file is manually written. And effectively, in all the other cases, the shells thickness are by default taken into account except in that particular case.
However, when using Abaqus/CAE, the default for Contact Pair, which is called Surface-To-Surface Contact (Standard or Explicit accordingly) is a Surface-To-Surface discretization method. In that case, the default behavior is to consider the shell!
=== About your question
In a static analysis, Abaqus needs to equilibrate the external and the internal efforts. If for some reason, an external load has no opposing reaction loads, it cannot be done and the analysis crashes .
The idea of driving with a displacment is to initialize the contacts. Closing the existing gaps will create counter forces and then only, Abaqus will be able to equilibrate the static analysis.
It is not because you do not know the "exact" gap between the components (even if you could measure it somehow...) that you cannot drive the first step in displacement. I mean the idea is to initialize the contacts, so, you need to go "far" enough to provoke closing contacts, even a bit further than the original gap to close.
If for some reasons, you cannot drive in displacement, you need to provide to the FEM a counter effort. You can do that with little springs around the part which needs to be hold. the same idea is to use little dampers or the option STABILIZE which generates a global viscous damping around the components.
In all those cases, since you introduce artificial forces, you need to postprocess their values, they should absolutely decrease before the end of the step, and will say as soon as the contacts starts to be established.
would the process be the same for a rigid body?
How we can define the gap between two plates?
Thank you for this tutorial, I need tutoriol about contact between solid and shell
You are welcome
Thanks for this video
thanks
+ahmad ali
You are welcome
good video but why the sh*t background music?!?!?!