I find your videos great but I was wondering what do you do if the job aborts due to errors. Is there a way to find out what exactly the errors are? For some reason the two other jobs didnt successfully compile

@MichaelOkereke

Жыл бұрын

Hello @Burcu, it is difficult to know exactly why a model fails without looking at the *.DAT or *.MSG files that come with the simulation. These files will often containe warnings and erro rmessages telling the user why things are not working out well with the model. I suggest you look at those. You will need to have someone with more experience of ABAQUS than you have to try and understand what you are doing and help you in correcting the problem. Good luck with it.

Hi dear @MichaelOkereke Thanks for your great videos. I have a question about create a new section with semi-circular cross section for beam. How can I create?

@MichaelOkereke

9 ай бұрын

Hello @soheilgh1845, thanks for this query. Normally, you will use pre-existing profiles in ABAQUS to create cross-section of a beam. Unfortunately, there is no option for a semi-circular cross-section under the Property Module of ABAQUS. What I will suggest you do is to go to the Property Module of ABAQUS. Click on the Create Profile option. In the pop-up window, you can name the profile - SemicircularProfile, and go to either the *Arbitrary* or *Generalized* options under Shape. You can create your profile from either of those sub-options. I will recommend you use the arbitrary option. You simply need to draw up your semicircle within say MATLAB, and get the coordinates of each point that make up the curve and the segments. The Arbitrary option assumes you descritize the semi-circule into segments which you can number numerically from 1 to as many as possible. Find the coordinates of all the segments. Specify the thickness of the semi-circular cross-section and specify all that. After that, ABAQUS will take all the input and recreate a semicircular option for you. On the other hand, you can use the Generalized option which will not create an actual semi-circular option but only works with an arbitrary shape. This in your case will be the semicircle. But you have to have worked out for that cross-section what the area moments of inertia would be along the x- and y-axis. You can find the formula in an Engineering Mechanics textbook. Input those into the boxes and ABAQUS will use them to work out your solution. The reason why the later approach is still correct is because the essence of specifying a profile is for ABAQUS to use those to work out the corresponding area moment of inertia values. So, if you can supply those directly to ABAQUS, you then do not need to explicitly describe the profile geometry. The downside is when you visualize your results in ABAQUS, it does not show the right geometry but the answers will be right. Let me know if the above helps.

@soheilgh1845

9 ай бұрын

Thank you so much. I tried arbitrary option. I create my semi-circular profile in MATLAB and divided it into 100 segments to obtain the x-y coordinates. After that, I entered x and y coordinates in Abaqus. I used y coordinates as the thickness of profile. I don't know it's true or not. But it gave me an opened semi-circular profile. Then I tried the second method which is generalized option. Firstly, I found the area moments of inertia along the x-, y-axis and xy. As you mentioned, it gave me another shape (like an oval). But in my case, I want the curved part to be inside of my part (Just imagine FCC unit cell, in solid simulation we cut the outside of the FCC part in order to create our lattice with neighbor unit cells). If I use this method, how can I understand which side is used for curved part of semi-circle? @@MichaelOkereke

@MichaelOkereke

9 ай бұрын

Great to see you try both methods. I did say the second case is not a visualization method, as it is based on an arbitrary geometry. If you want to visualize it properly, in the simulation results, then the first method is the way to go. You can try a different section say a circular section (full circle) and then do the semi-secular (first method). YOu should get results that look similar at least on the top side of the circle with respect to the semi-circle (assuming the semicrcle is full on its top side). Hope this further comments make sense.