July 28, 2023 at 3:26 pm #4738
I’m trying NextFEM to use it on a regular basis on my academic life as professor of Structural Concrete. Thanks for the free, basic version of your program, which is not so basic. The possibility to use it with API is very powerful.
In this trial, I was faced with some problems. In this post I’ll describe the first one. The method addBeamLoad() doesn’t seem to work properly when using non-uniform distributed loads on a beam. For example, for a simple supported beam with a span of 5 m, subjected to a uniform load of 12 kN/m, the program gives the true result (37.5 kNm). But when we apply the same load on a partial length of the beam, the program gives the same result, as if the beam was loaded in the full length.
Applying the load via GUI doesn’t seem to work properly either.
Attached is the python file with illustrating the problem.
Thank you in advance for your support.
Luciano JacintoJuly 28, 2023 at 4:38 pm #4740
Dear prof. Luciano,
thanks for writing to us, we immediately released a patch for this. Please re-download version 184.108.40.206 from now on (https://www.nextfem.it/it/download/) and re-install it over the existing copy.
you can rewrite the Python code as attached, wihtout hard-coding the API path.July 28, 2023 at 5:47 pm #4742
Many thanks for your quick reply. The problem is solved. I will continue to test NextFEM, which seems to be a very interesting program: simple and powerful.July 28, 2023 at 6:02 pm #4743
Thanks for your appreciation.
Also, we can issue academic licenses for some of the modules for free – if needed, let us know by using the contact page: https://www.nextfem.it/it/request-a-quote/July 28, 2023 at 7:40 pm #4744
Sorry, but the problem with non-uniform loads on beams persists. For a simple supported beam with a span of 5 m and a triangular load, 0 at the beginning and 12 kN/m at the end, the moment at the mid-span is 18.75 kNm, but the program gives a strange result (a negative value!). Please verify this. Thanks.July 29, 2023 at 11:52 am #4745
Hello, the previous minor patch brake something, a new patch will be released today and then please update again to 220.127.116.11.
We get the correct results by using the attached script.July 29, 2023 at 3:00 pm #4747
Thak you very much. I will look forward for the new release.July 31, 2023 at 5:50 pm #4748
Congratulations for the 18.104.22.168 release. I made some tests, and everything seems work perfectly. I also notice that it was made an improvement in API for Python. Now we can specify several load values and the corresponding positions:
elem = e1,
values = [0, -12, -12, 0],
positions = [0.0, 1.0, 4.0, 5.0],
direction = 2,
loadcase = ‘lc4’,
local = True,
Is there a change log so that we can look for the improvements in each release?
Thanks for this very nice program.August 1, 2023 at 8:12 am #4751
thanks for your interest. Yes, the new command for beam loading allows to insert values and positions as arrays. We don’t have a change log for minor releases.
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