Learning Forum

[Gabriel Lucca]

Hello, Aurojyoti,

Thanks for your answer,

I am simulating a slab under fire conditions using LS Files from thermal analysis. However, I encountered an instability problem caused by the thickness of the slab (SHELL 181 element) and thermal expansion of steel. The slab experiences compression due to thermal expansion even before temperatures reach 100 degrees Celsius. Currently, I'm attempting to address this issue by solely considering displacement to determine if there's an underlying problem or if alternative approaches are necessary.