Customer has AEC Collection with us but has no training, during the process of structural analysis of a metallic structure model, he is facing a problem that has the description:
905 :Internal error when analyzing concentrated node masses.
According to the customer, the problem started to occur after he adjusted the Time History Analyses Time Step parameter value to 0.01s.
According to him, if keeping the value at 0.1 the analysis worked correctly in version 2023 of Robot, he installed version 2025 to check if it was a version problem.
Well, this is the problem that the customer is facing that is preventing him from continuing with his activities. If it is necessary to download the model, it can be obtained from the links below:
All project geometries were generated in Robot, however, the client previously modeled the format, I think we can call it a project scheme in single-line objects in AutoCAD using Python language, then imported an IGES into Robot and indicated which profiles would be used in those positions of the bar elements.
In addition to the problem presented, the customer also has some doubts regarding what the software can offer, namely:
1. Robot exports an STR file that allows viewing the model in text format. Is it possible to somehow edit this STR file so that when updated it generates the three-dimensional model of the project again?
2. Is it possible to use the Python language to directly interfere with the geometry of the Robot project? If yes, there is no need to answer question 1, as the task would be for that, and if there is a Python library that allows modifying the model by directly messing with the API, the client prefers to choose this path.
3. There is a feature in the Robot that when performing a structural analysis, it automatically indicates that a certain profile did not pass the structural analysis and indicates the most appropriate profile for that case, how does this mechanism work and where is it?
4. Is it possible to perform a separate Static Structure Analysis and Modal Analysis without Time History Analysis? For example, running each analysis independently, without sequencing.
5. Another question would be regarding the possibility of keeping all analyzes in a single model, without the need to create a model for each type of Modal, static, etc. analysis.
