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Oh Robot Blues

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Some people might tell it that the great grim motto of the STEM (Science-Technology-Engineering-Math) field is: sweat, tears, and pointless manual labor. So here’s just a small update on how things are for the Autodesk Robot Structural Analysis (ARSA) users out there.

The last week brought some new discoveries of problems that a Robot user should be aware of. I’ll just leave it here for future reference:

  • While ARSA is able to export 3D faces from DWG/DXF files, the export process is prohibitively slow, taking some 2 minutes per single 3Dface. This adds up to the horde of problems with structural calculations compatibility, which can be summarized as follows: if you ever switch to another structural analysis software (or sometimes even another preprocessing technique), you will have to rebuild your existing models nearly from the beginning in order to be able to use them.
  • The issue with response spectra analysis (namely, incorrect ZPA calculation) that has been plaguing dynamic analysis in ARSA at least since release 2011 (and possibly in earlier releases) is still there, after a major version update and three service packs. Serioualy, how do you get away with this crap? Am I the first person to ever use ARSA for dynamics? I don’t think so, since there are guys that are much more proficient with dynamics in ARSA than me.

These issues were discussed with the support team of ARSA (these guys do a really nice job, considering the negligence that they receive from our mighty ADSK overlords) and it was established that these issues are persistent and endemic to the ARSA application.


Written by Alexander Bausk

November 16, 2011 at 1:48 pm

Posted in Программы, FEA, GUI

Доступ к средствам отрисовки в ANSYS

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Через язык программирования (или правильнее называть язык команд?) APDL можно делать многие интересные вещи, которые нам пригодятся для осуществления хотя бы минимальных действий по визуализации результата.
Итак, цитата с форума

Сообщение от Александр Бауск
я хочу, например, обозначить часть элементов (пластины, с известными номерами) одним цветом, часть — другим. .

Ответ дорогого товарища The_Mercy_Seat:
Сначала селектируете элементы по нужному признаку, а потом назначаете им цвет U_M: PlotCtrls => Style => Colors => Picked Entity Colors. Потом выделяете все.

Итак, мораль: командой /COLOR можно по желанию расцвечивать наши элементы или другие объекты базы данных ANSYS.

Written by Alexander Bausk

November 27, 2007 at 12:41 pm

Posted in ANSYS, APDL, Мелочи, GUI

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