Nov 5, 2025 · Welcome to the Autodesk Inventor Nastran Forums. Ask questions, share your knowledge, and make connections.

Apr 6, 2021 · There is a problem in the Inventor Nastran that if you set a frequency range, it will set a Parameter based on your input. Because the Parameters are used in every analysis in the model, …

Aug 14, 2014 · Due to the absurdly bad UI, Nastran is a last resort, extremely unplesant, avoid at all cost - super simple case usage only simulation package... the bugs in UI are kiling it miserably.

Oct 11, 2017 · Hello @Aadithya01, before we go into the details, there are couple of links of interest just in case you were not aware of them Nastran In-CAD help tutorial "Section 17: Ball Impact Exercise" …

Sep 24, 2016 · (the element is CQUADR) I thought the punch file structure and format is similar for all Nastran software. In the user guide of NX Nastran there are some sample outputs of punch data, …

Jul 28, 2017 · I'm aware of the Nastran In-CAD verification manual. But at 264 pages it doesn't seem to be enough. The verification manual doesn't address the pre- and post-processing at all. And bugs …

Jul 30, 2020 · Hi All, I am doing linear static simulation of model approximately 1M elements (Solid+shell) in Nastran In-CAD 2019. The solver runs fast enough but the user interface is painfully …

Apr 8, 2022 · The solution was using the Automatic button in the Nastran ribbon to automatically create contact sets between touching surfaces. Once I elected that feature, I was able to run the simulation …

Mar 22, 2021 · The nastran file indicates tetrahedron skew angle errors (which seems to be typical for these larger analyses) for a handful of elements. I ran the mesh quality check with jacobian <.1, here …

Oct 24, 2019 · The combination of shrink fit contact and temperature loads behave differently than expected according to this article: Wrong results when using shrink fit and temperature loads in …