Hypoplastic Interface Model (Stutz et al., 2016)


Modelling of interfaces in geotechnical engineering is an important issue. Interfaces between structural elements (e.g. anchors, piles, tunnel-linings) and soils are widely used in geotechnical engineering. This model is an enhanced hypoplastic interface model that incorporates the in-plane stresses at the interface. To this aim, a general approach to convert the existing hypoplastic model with a predefined limit state surface for sands into an interface model was developed. This was achieved by adopting reduced stress and stretching vectors and redefining tensorial operations, which could be used in the existing continuum model with few modifications. The new enhanced model is giving improved predictions by the incorporation of in-plane stresses into the model formulation.

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  1. Phuor Ty
    Phuor Ty 6 years ago

    I am a research student and I want to program the interface element between soil and footings. Therefore, I would like to ask you some comment or share me its subroutines. Thank you in advance!

  2. Hans Henning Stutz
    Hans Henning Stutz 6 years ago

    Dear Phuor,

    you can write me a message.

    Best regards,
    Hans Henning

  3. Geyang Song
    Geyang Song 4 years ago

    I’m a post-doc at the University of Nottingham, and I’m using the hypoplastic model to simulate the centrifuge tests we did. The research area is related to soil-pile interaction. In the current model, we used the basic Coulomb friction law to simulate the soil-pile interface, but the results do not match well with the centrifuge tests. I think is because of the complex interface is not well simulated.

    Does anyone know how to implement this Hypoplastic Interface Model into ABAQUS combined with the existing hypoplastic model subroutine?

    For more informations about our work:

    Geyang Song

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