Hello,
I would like to model the long-term deterioration of a cut slope in high-plasticity clay similar to what is described in this paper - https://reader.elsevier.com/reader/sd/pii/S0013795220318093?token=6B2199B29F36D1E4AAA42E25B2DADFB91DD1547C8754394A2584DBB64076FD21D5244229319DEEC1131C17858DFFCF67&originRegion=eu-west-1&originCreation=20220324143715.
The researchers here used FLAC which has a strain-softening material model where the *strength* of the material reduces with strain. This allows the material to be modelled with peak and residual strength (see Fig.4 in the linked paper). I have searched this site and made enquiries internally and can't find any examples of similar analysis being undertaken in Plaxis.
So I am opening up this question to the wider user-community - does such a material model exist in Plaxis? And/or is there an example of such an analysis being undertaken using Plaxis?
Thank you,
Rebecca
Dear Rebecca,
Strain softening is a behaviour which can become difficult due to the mesh dependency and regularization issues that arise. This is a difficult topic for users to handle in any code, regardless of brands, etc..
Currently, we do offer the OC-Clay UDSM, even though it might not be 100% what you have in mind, but still applicable in Lond clay which might be of interest: https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/46246/udsm---oc-clay
The NorSand UDSM, is also a practical choice for slope stability which you can consider depending on your exact case: communities.bentley.com/.../norsand---plaxis-udsm