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PLAXIS | SOILVISION
PLAXIS | SOILVISION Wiki 64 bit User Defined Soil model
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          • 3D Extrusion along a curved path
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          • 64 bit User Defined Soil model
          • After a consolidation analysis I have excess pore pressures in "drained" material sets. Why?
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    64 bit User Defined Soil model

    Application PLAXIS 2D
    PLAXIS 3D
    Version 3DFoundation
    PLAXIS 2D
    Date created 20 June 2011
    Date modified 20 June 2011

    Using 32-bit or 64-bit dynamic-link libraries (DLL) to run user-defined soil model (UDSM)

    Since the release of PLAXIS 2D 2017 and PLAXIS 3D 2016, both calculation kernel and graphical user interface (GUI) are designed to use 64-bit processors. Due to this, only 64-bit dynamic-link libraries (DLL) can be used to run a user-defined soil model (UDSM) in PLAXIS.

    Having compiled a 64-bit .dll file, it should be placed in the folder "udsm", located in PLAXIS installation folder.

    For further information, please refer to Plaxis user defined soil models/.

    Previous versions of PLAXIS

    In previous versions of PLAXIS, a 64-bit kernel is used in conjunction with a 32-bit GUI. To run a UDSM, it is, therefore, necessary to have a 64-bit version of the UDSM to interact with the kernel and a 32-bit version to interact with the GUI. The following is recommended:

    • compile the UDSM as a 32-bit DLL file (e.g., YourModel.dll);
    • compile also the UDSM as a 64-bit DLL file; give the same name as used for 32-bit DLL file, followed by "64"(e.g. YourModel64.dll);

    Please note that it is necessary to compile the UDSM code as 32-bit and 64-bit DLL, not just to rename one of the |DLL files. Moreover, please note that both 32-bit and 64-bit DLL files should be placed in the folder "udsm", located in PLAXIS directory folder.

    Providing that (1) the DLL are properly compiled and (2) their names are correctly set and (3) the DLL files are places in the correct directory, the 32-bit DLL will interact with the GUI, while the 64-bit DLL will interact with the kernel to run the Finite Element calculation.

    Alternatively, to make use of only the 32-bit DLL it is possible to use the 32-bit calculation kernel by disabling the 64-bit version available in the PLAXIS directory folder. As detailed below, the easiest strategy consists of renaming the 64-bit calculation kernel, which will disable it. Please note that, by using a 32-bit kernel, only a 32-bit DLL is necessary. Please note also that, to restore the 64-bit behaviour, the kernel file should be renamed to its original name.

    Disabling the 64-bit kernel in PLAXIS 2D AE, PLAXIS 2D 2015 and PLAXIS 2D 2016

    Please go to the PLAXIS installation folder and search for a subfolder called "64". Open the subfolder and rename the file "plasw64.exe" to, e.g., "_plasw64-backup.exe".

    Disabling the 64-bit kernel in PLAXIS 2D 2011, 2012 and 2D Classic

    Please go to the PLAXIS installation folder and search for the file "plasw64.exe". Having found it, please rename it to, e.g., "_plasw64-backup.exe".

    Disabling the 64-bit kernel in PLAXIS 3D 2012/2013/AE

    Please go to the PLAXIS installation folder and search for the file "plasw364.exe". Having found it, please rename it to, e.g., "_plasw64-backup.exe".

    Note: with the release of PLAXIS 3D 2016 and PLAXIS 2D 2017, Plaxis will only support 64 bit user defined DLL files. 32 bit DLL files will not be loaded by the Plaxis programs with these versions.

    See also

    Plaxis User Defined Soil Models

    [Models]


    UDSM - Anisotropic Clay Models: S-CLAY1 and S-CLAY1S

    [Models]


    UDSM - Barcelona Basic Model

    [Models]


    UDSM - CLoE Hypoplastic Model

    [Models]


    UDSM - Generalized Hardening Soil Model

    [Models]


    UDSM - Hypoplastic model with inter-granular strain

    [Models]


    UDSM - Isotropic Jointed Rock with Mohr-Coulomb Failure Criterion

    [Models]


    UDSM - MIT S1 Model

    [Models]


    UDSM - Mixed Isotropic-kinematic Hardening Elastoplastic Models for Structured Clay

    [Models]


    UDSM - SHANSEP MC model

    [Models]


    Concrete model

    [Models]


    UDSM - Swelling Rock Model

    [Models]


    UBCSAND3D Model

    [Models]


    UDSM - Visco-elastic perfectly plastic model

    [Models]

    • Plaxis 3D
    • 32 bit
    • UDSM
    • compile
    • PLAXIS
    • 64 bit
    • PLAXIS 2D
    • User defined soil model
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    • Micha van der Sloot Created by Bentley Colleague Micha van der Sloot
    • When: Mon, Dec 23 2019 7:07 AM
    • Micha van der Sloot Last revision by Bentley Colleague Micha van der Sloot
    • When: Tue, Dec 24 2019 6:12 AM
    • Revisions: 2
    • Comments: 0
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