Element deletion after including dynain file in CFST column analysis
이승철
Hello everyone,
I am currently studying the impact behavior of CFST columns. In my LS-DYNA model, the steel tube is modeled with shell elements, while the core concrete is modeled with solid elements. Part of the steel tube penetrates into the coping and footing.
I defined *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_TIEBREAK between each steel tube and a part set consisting of the coping, footing, and two core concrete parts.
After impacting the green column, I generated a dynain file for a subsequent loading analysis. Then, I included the dynain file in another keyword file and ran the analysis. However, many elements are deleted immediately after the analysis starts, as shown in the figure.
The same problem occurs even when no additional load is applied in the subsequent analysis.
Does anyone know what might be causing this issue? I am wondering whether it could be related to the initial stress/strain state in the dynain file, the contact definition, or the penetration of the steel tube into the coping and footing.
Thank you for reading my question. Any advice would be greatly appreciated.
l...@schwer.net
Have you read Appendix X: Multistage Analysis, in particular the description of the “LSDA format” used with the dynain file?
See the User Manual Volume I. --len
--
You received this message because you are subscribed to the Google Groups "LS-DYNA2" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ls-dyna2+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/ls-dyna2/7bf6db3a-3918-44ab-a7dd-45c193403b28n%40googlegroups.com.