Thank you for your support. I decided to use the 3D beam model because *release command works with no bug. In this 3D space, How would you simply model the half-car model as shown in the picture, providing a surface-to-surface interaction between the beam and contact point? That model works well...
Is it possible to assign both the revolute and Pin to the beam without using two separate parts and connector assignment like assigning moment *release? If two parts are necessary, I am concerned that the resulting two surfaces could create numerical problems (contact chatter problem creating...
When you assign a reference point by directly clicking on any point of a part (beam, shell etc.), you can not edit its coordinate. You can assign displacement or velocity boundary conditions to the reference point for moving. Then the part that you assigned the reference point can move based on...
Additionally, you can also check this attachment to see the same error message when the point mass is added to the beam in eigenvalue analysis.https://files.engineering.com/getfile.aspx?folder=5b18e325-4f64-4a2d-9e03-b07af31e3093&file=Job-quartcar-Part2-mass-eigen.inp
I have just shared it. Thank you!https://files.engineering.com/getfile.aspx?folder=a505df76-bef1-4129-ae7d-1bc8f3e56088&file=Job-quartcar-Part4-static.inp
When I got that error the first time, I was trying to apply moment releases in my actual model (complicated one) that has a surface-to-surface interaction, assigned point mass, rigid body etc. Then I decided to model the bridge from scratch without adding any of those features simply as seen in...
Hi again.
I need further help to solve one more issue. I am using the 2d Beam (b21), and it works perfectly when I use *Release, no matter if I use either M1 or ALLM commands. I conducted eigenvalue analysis and static analysis, and both worked well. In the further step, I need to define a...
I tried it with M1 but I received the same error message " An invalid element end identifier 0 has been specified on the element
Degree of freedom 3, 4, or 5 has been specified on the model. Beam elements in space should be used with the *release option"
I suppose it should be very simple and...
Thank you so much, FEA way.
When I tried to implement the *Release feature, I received the error messages below.
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When I tried this:
*RELEASE
4, S2, ALLM
Error message...
Hi!
I would like to assign a moment release to the beam shown in the picture, but not using the classic method that is commonly taught on YouTube or engineering forums. I know how to do it the classic way, which involves separately modeling a 2m length beam element (AB segment) and a 25m length...
Firstly thank you for your feedback and valuable comments. @FEAway
4) I am starting with your last comment. You are correct that the top Reference point goes in the opposite direction. I saw it in the results of U2 displacement. In the model, I actually coupled each top (vehicle) and bottom...
Thank you for your interest. I gave some details regarding the model below. The thing that I cannot understand is why using two contacts does not work even if all the features are the same with Models 2 and 3 that work perfectly.
1)The mass of 1000 kg assigned to each XRP- vehicle that is...
Hi! I perform moving load analysis using Sprung mass (SDOF system) for bridge modal identification (called drive-by monitoring) from the vehicle responses. I face a problem when using more than one contact point (like two quarter cars).
The bridge (25m) and the approach slab (2m) are modelled...
Dear all,
I modelled a concrete cylinder (diameter:150mm,height:375mm, fixed at the base) for a compression test and applied 2 mm displacement under 2 sec and 4 sec separately, using both dynamic implicit and explicit methods. The obtained results were the same. However, the problem is that the...
Dear all,
Using the CDP model, I modelled an RC beam for a 4-point bending test. I followed all the instructions as explained in an example in the literature. The beam was loaded for 10 sec. I observed that the tensile region in the bottom of the mid-span turned out to be a compressive region...
