Problem with job results. 2

[hadtush]

Hi to anyone who's reading this,
I am doing my final year project and regarding that I am working on a simulation using ABUQUS. But every time I submit my job it is exiting with few errors. I have no clue why that's happening. Just wondering if anyone can help me out here.

 

[FEA way]

Status data (upper part of Job Monitor) shows that your analysis can’t converge from the beginning. Warnings displayed below the status data indicate problems with contact and plasticity. However these are rather generic messages and the actual reason of nonconvergence can’t be determined this way. Most likely the problem is caused by rigid body modes caused by insufficient constraints or by contact that is not established at the beginning of the analysis.

Can you attach some pictures showing your model (along with mesh, boundary conditions and so on) and describe its settings ?

 

[Mustaine3]

There is something fundamentally wrong in your model. Did you forgot to define contact? Or is a contact not closed and you applied a load? What about missing boundary conditions? Visualize your model in your head and check that no part can make any unconstrained rigid body movement.

 

[IceBreakerSours]

Or, if you are familiar with it, do a modal analysis. It just takes a few minutes (tops) and you will "see" if there are any rigid body modes.

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[hadtush]

First of all I am new here, and really appreciate to these helpful replies to my problem. Apologies for being vague about the problems as well. In my FEA model I am trying to model a 2-D cross section of a dovetail joint in gas turbine engine blade to examine fretting wear behaviour. Just to clarify more my full model is attached down below. Thanks everyone, your help means a lot. Really appreciate this.

 

[FEA way]

I checked your model. To make it work you just have to fix X translation of the top of indenter. But I would also replace this point load with force applied via kinematic coupling (then you can apply the boundary condition this way too).

 

[hadtush]

@FEA_way thank you so much respected sir for your precious time. I am going to do as you suggested.