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We have now released a new numgeo version, with plenty new features, bugfixes and new examples. 

In particular, we have added:

• New 𝗛𝗮𝗿𝗱𝗲𝗻𝗶𝗻𝗴 𝗦𝗼𝗶𝗹 𝗺𝗼𝗱𝗲𝗹 with Matsuoka-Nakai failure surface
• 𝗛𝘆𝗽𝗼-𝗜𝗦𝗔-𝗦𝗙: A hypoplastic model with ISA and semi-fluidized state (SF) extension
• Up to 2x 𝗳𝗮𝘀𝘁𝗲𝗿 𝘀𝗼𝗹𝘃𝗲 𝘁𝗶𝗺𝗲𝘀 with PARDISO solver improvements
• 𝗔𝗻𝗱𝗲𝗿𝘀𝗼𝗻 𝗮𝗰𝗰𝗲𝗹𝗲𝗿𝗮𝘁𝗶𝗼𝗻 for improved convergence in implicit simulations
• New factor of safety extrapolation schemes for strength reduction
• Initial conditions for 𝗳𝗹𝘂𝗰𝘁𝘂𝗮𝘁𝗶𝗻𝗴 𝗳𝗶𝗲𝗹𝗱𝘀 𝘄𝗶𝘁𝗵 𝗺𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗰𝗼𝗿𝗿𝗲𝗹𝗮𝘁𝗶𝗼𝗻 𝗹𝗲𝗻𝗴𝘁𝗵𝘀
• Extended Mohr-Coulomb friction model incorporating dilatancy

A special thank you goes to Merita Tafili and Hossam Abdellatif for the implementation of the Hypo-ISA-SF model, a novel constitutive model also covering semi-fluidized states in sands.

For the non-German speaking readers: the below animation shows the simulation of a pull-out experiment of a grout anchor using an advanced hypoplastic soil-structure interaction model available in numgeo.

A new scientific publication has appeared in the Journal of Geotechnical and Geoenvironmental Engineering. The work uses numgeo to examine the load scenario of so-called freak waves in the context of the geotechnical design of offshore foundations.

Freak waves are exceptionally large waves that can occur in all oceans and are considered a possible cause of serious shipping accidents. In addition to maritime structures, they can also place considerable stress on the foundations of offshore wind turbines. Until now, the effects associated with such extreme waves have not been explicitly taken into account in geotechnical design. The article now published closes this research gap.

The results show that wave-induced groundwater flow in particular must not be neglected in the analysis of extreme wave events. Furthermore, the investigations indicate that existing offshore foundation systems are highly likely to fail under the load conditions of a freak wave event.

We are happy to announce a new numgeo release packed with powerful features!

Special thanks to Antaeus Bettmann, who has invested significant time to make numgeo more robust and to fix bugs — steadily growing into the role of core developer.

Highlights (among others):
• Many new constitutive models for soils
• Structural elements such as trusses and Timoshenko beams
• 3D elements for partially saturated soils
• Change materials mid-analysis
• Easy import of random fields
• Improved contact modelling with serendipity elements in 3D
• 4 new Tutorials and 11 new Benchmark studies

For the full list, see the release notes:

A huge shout-out to Johann Clausen (Aarhus University) for sharing his impressive implementations of elasto-plastic soil models such as Mohr-Coulomb and Hoek-Brown.

And thank you to Luis Mugele (Karlsruhe Institute of Technology) for the joint effort in implementing the Generalised Intergranular Strain into numgeo.

The simulation of the train shown in the animation has been done by Paul Haberl.

🎄 Christmas has come early this year! 🎄

We are thrilled to announce the latest release of Hashtag#numgeo, our finite element software for advanced geotechnical simulations.

Here’s a glimpse of what’s new in this release:

✅ Enhanced modelling for unsaturated soils: A novel approach to incorporate suction effects into the effective stress.
✅ Faster and more robust contact simulations.
✅ New mixed Implicit-Explicit time integration scheme.
✅ New equal-order stabilised elements tailored for unsaturated soil behaviour.
✅ Improving the integration of Hashtag#numgeo into the pre-processor GiD SIMULATION

… and much more! Dive into the details by checking out the full release notes here

Thank you to Antaeus Bettmann, Antonia Nitsch, Rahul Dogra, and Christoph Schmüdderich for their significant contributions to making this release possible!

We hope you enjoy exploring the new features, and we look forward to your feedback!