region and Rayleigh

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Posts: 30
Joined: Tue Nov 22, 2022 10:24 am

region and Rayleigh

Post by » Sat Mar 18, 2023 11:24 am

Dear stko team
Is there any tutorial that explains the difference between the region and Rayleigh commands? It's a bit difficult to understand what's written on the openseeswiki
When I assign an incorrect region value to a soil mass, ground motion does not cause soil deformation or increase in pore water pressure. What is the reason for this?
However, after adjusting the values of the parameters in the region, the ground motion was successfully applied to the soil mass, resulting in normal deformation of the structure and an increase in pore water pressure

Posts: 1718
Joined: Tue Oct 29, 2019 8:45 am

Re: region and Rayleigh

Post by STKO Team » Mon Mar 20, 2023 8:56 am

They are the coefficients of the Rayleigh damping. You can google it to understand how to compute them properly

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