I am not sure if there is a way of interpreting the "Find Contact Pairs" command button in the GUI of ABAQUS into a command line in python, I need the machine to find all possible surfaces in contact with each other and name them according to the materials of the parts the surfaces in contact...
I actually did...but LS-Dyna has some issues dealing with C3D10 elements generated with the tetrahedral meshing technique... I appreciate your help. If there is any way to avoid these tetrahedral elements my problem is gone ... do you have any other tricks to deal with this matter.
I even...
Thank FEA way for fast response again ...In fact this joint is a very simple part of a bigger model I will try to solve within the few next weeks. In this large model I will expected to show a full connection details and FE analysis to that connection which includes 34 screws in the same manner...
Greetings, I have a simple model in which I am trying to simulate single lap joint of two cold formed sheets (represented as solid elements)connected through a screw (self drilling screw).
I have managed to draw the screw with the threads and also managed to mesh the screw in addition to...
That is what I meant by linking the element number to one of its nodes...and I don't know if Sergiano have other meaning... by default when talking about an element, we mean the center of that element unless we specify another node of its geometry. Thank you Mustaine3 for making things obvious...
I don't know if this will help making it work but there is a method that gets the coordinates of vertices, datum nodes, reference points and mesh nodes. This method can work with you if you -somehow- linked the element number one of its nodes. This method is written as follows...
It works!!
I have found out the missing part...I was defining the the interaction module via a python script in which by mistake, I defined the section of the connectors prior to defining the discrete fastener. By rearranging the code every thing works fine now except for the connector failure...
Thank you for your kind reply. But if by using coupling constraint I have eliminated the job of the connector...I want to make use of this feature in ABAQUS. Especially that its much easier and accurate method(in my case at least). I also want to point out a point that I am not using holes in...
But if so, how did the file submit and give deformation and load-displacement curve that was really good fit to the experimental work?
I am sorry being headache to you FEA way. And really appreciate your advice.
I didn't use any type of coupling, should I? Instead I have created attachment points on the surface the created the wire frames using the projection feature in ABAQUS and selected the second surface as a target surface. Then assigned the sections to the created wires.
I am not able to send the...
I appreciate your help FEA way. About your question if the failure criteria is activated at early stage of the solution and subsequently losing stiffness completely...I have to tell you that the model is thoroughly contact-free i.e has no contact or interaction and all the load has to be...
Thank you FEA way very much, but it still giving that damned zero. :)
but I have a one further question are these output only available in explicit solver? or it's also available in General-Static and Riks in implicit CAE?
So sorry, but I have found a warning message telling the following:
"Output request s is not available for element type conn3d2"
I did not look carefully at the warning messages but I have found it out just few minutes ago.
I don't know if it is related to my issue but I have defined the field...
Hi FEA way and thank you for referring me to the article. It was actually a useful addition my knowledge. About your question if I have added behavior to the connector section or not, yes I have defined a failure criteria to the section of type "Failure" to the available CORM in the Cartesian...
I have a model in which i have defined fastener connector section to simulate self drilling screws in a cold formed sheet. I have chosen a connector sec. of type Cartesian and Align for the connection.The reason why I selected these types of connection; is that I needed to provide a failure...
Thank you Erik for your time and explanation. I am replying late because a harmful virus had infected my device and I had to spend some time restoring my backups from everywhere. Now I managed to solve the model by means of using Implicit Dynamic step and the convergence is running perfectly...
Thank you Dave442 and IceBreakerSours for response. I want to ask also about the 5% ratio between ALLKE and ALLIE what is meant by this ratio, is it to compare individual xy-data from abaqus in a spread sheet for example?
Hi everybody. I have a quasi static problem that I need to use mass scaling to increase the stable time increment and it's the first time i use mass scaling. I used two mass scaling factors as I followed a strategy in assigning mass scaling factor to selective element sets with larger value of...
Hi Erik Panos Kostson I want first to thank you for fast response and secondly to point out some points in the model so as it may help understand my question for further benefit from your experience for me at least.
I have three more questions:
a) Now you have kindly shown me a new method (I...
Hi everybody. I have the created and submitted the model in the figure attached below. I need to know how I can extract the moment curvature of the connection just to get rotational stiffness during different stages of loading and steps. I have surfed the net to find a solution but all what I...
