• GeoXPM is a new generation computational software package developed at MCG-Lab, led by Professor Ha Bui, an ARC Future Fellow in the Department of Civil Engineering at Monash University.
• GeoXPM is designed to address the ever-evolving demands of solving intricate geotechnical engineering, geomechanics and geophysics challenges, particularly those involving fracturing, large deformation and flow behaviours of geomaterials.
• GeoXPM is a free software with an interactive graphical user-interface. The user interface of GeoXPM is developed based on three different open-source platforms, including FreeCAD for CAD drawing, Paraview for data visualisation, and GenCase for generating particle coordinates.
• GeoXPM comes as is, without any warranty.

• GeoXPM is taking a different approach by focusing on designing an enhanced user experience and providing a comprehensive software package for large-deformation simulations of geomaterials, which is a first in this field. This initiative aims to overcome the challenges associated with utilising open-source SPH libraries that are currently available in the literature.
• GeoXPM offers comprehensive solutions and streamlines working procedures for geotechnical professionals, ensuring ease of use for practical applications. Additionally, it provides capabilities for advanced users to incorporate new constitutive materials into the software through a robust user-defined function.

This depends on the specifications of your computer. However, in its current state, the free version of GeoXPM runs on the CPU without parallelization. In the free software version, the total number of particles for 3D calculations is limited to 50,000 to prevent excessive computational time. If you are interested in using a higher number of particles, please contact us to inquire about the collaborative version of the software.

• GeoXPM is still in the early stages of development. Therefore, many advanced features, such as multiphase flows, multiphysics, soil-structure interactions, and hardware acceleration, are not yet available in the initial release version. However, these features are planned to be implemented and released in the near future. For information on the currently available features, please refer to the Features page.
• Updated features can also be tracked through release versions on the Download page.

Advanced users can incorporate their own constitutive models into GeoXPM using the User-defined Constitutive Model module. This is achieved by creating customized constitutive models in the form of a Dynamic Link Library (DLL). Instructions on how to incorporate a constitutive model into GeoXPM are available in the Tutorial Manual.

In most cases, this is caused by users’ errors in generating the initial configuration of the computational model or input parameters. Please check the input geometry, parameters, materials, and stages, and then try running again.

GeoXPM is developed based on FreeCAD and ParaView. Therefore, both of these software programs need to be installed on the system for GeoXPM to work correctly.

During the installation process, if the installer cannot detect either of the two software programs, it will prompt the user to install the missing ones first. Please ensure that FreeCAD and ParaView are installed in the correct Program folder on the C:\ drive for proper detection.

Furthermore, if users are interested in implementing a user-defined constitutive model, a Fortran compiler is required. The Intel Fortran Compiler, which is included in the Intel oneAPI HPC Toolkit, is recommended.