Why do I get error MAIN: "Access violation" (C0000005) exception encountered.

d.mijajlovic over 5 years ago

0 Darrel Sinclair over 5 years ago

This article may help:

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8017295
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0 Darrel Sinclair over 5 years ago

You can also try increasing the memory for the run and see if that changes anything.
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0 d.mijajlovic over 5 years ago

All the model checks are OK, Static and Free-Free runs finished without any errors. Therefore the article KB8017295 doesn't help.

How can I increase the memory for the run?
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0 Don.Graff over 5 years ago

Can you attach the log, f04 and f06 files for the failing run?
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0 d.mijajlovic over 5 years ago

Thank you for the quick reaction. How can I attach these files? The function is not available here.
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0 Don.Graff over 5 years ago

It might be best to work this issue via technical support, rather than on the forum. I have sent you a direct email (if I used the correct email!).
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0 d.mijajlovic over 5 years ago

Yes, I have seen that you have opened the case, thank you.
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0 Don.Graff over 5 years ago

This ended up being an issue with Nastran v2016 and Windows 10 where Lanczos fails with an Access Violation. This works in v2018 onward. Nastran 2016 is not officially supported for Windows 10. If you must use v2016, then using SINV instead of Lanczos can work, but will require some iterations to make sure you get all the modes... or try one of the other eigensolvers.
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