GeoXPM Forum - Recent Posts

RE: Three-dimensional landslide simulation

Tanishq09 — Tue, 20 Jan 2026 13:20:37 +0000

@tienlk2004 I have imported two stl files in GeoXPM, one for pre-event and another for post-event landslide. Then I use the option convert shape from mesh, and then use the option extrude to add the thickness of 30 mm downwards to get a solid file. Same done for another file also. Then i select both the files and use the slice apart option but nothing happens, it shows not responding. Am I doing something wrong, please help me. Please refer the attached pdf for the query.

3D-Terrain-query-in-GeoXPM.pdf

RE: Three-dimensional landslide simulation

Tanishq09 — Tue, 20 Jan 2026 04:32:07 +0000

@tienlk2004 Thanks for fast replying. I will do this and if some problem occurs, I will come back to you. thanks

Answer to: 3D terrain integration

Tien Nguyen (Smith) — Tue, 20 Jan 2026 04:19:35 +0000

@tanishq09 see https://geoxpm.com/community/geoxsph/three-dimensional-landslide-simulation/#post-144

Answer to: Three-dimensional landslide simulation

Tien Nguyen (Smith) — Tue, 20 Jan 2026 04:18:30 +0000

@tanishq09 This is regarding working with CAD meshes and Parts. Note that you can only cut meshes with meshes and Parts with Parts. Whether the Mesh or Part is hollow does not matter. If you want a solid object like those in the tutorials, you can convert the Mesh to a Part, then use Parts -> Convert to solids to create a solid.

Regarding your second question, we do not manually "make" the sliding mass flow. Instead, the behavior of the sliding mass is governed by its constitutive (material) models. For example, by applying a rheology model, your sliding mass will behave as a viscoplastic material and flow accordingly.

RE: Problem generating particles correctly for tunnel excavation (2D simulation)

Tien Nguyen (Smith) — Tue, 20 Jan 2026 02:04:03 +0000

@joao-vieira After particle generation, could you capture the ParaView screen output?

Even if soil models are assigned, there will be no time steps in the simulation if no soil particles exist within the simulation domain.

Please also check the staging to ensure that soil particles are present during the simulation.

RE: reporting bugs/problems when running GeoXPM

Tien Nguyen (Smith) — Tue, 20 Jan 2026 02:00:44 +0000

@madelestin Unfortunately, in the current released version, you can only check this by outputting the simulation results and examining whether any instabilities occur. Typically, extreme stresses or particle overlap can cause the soil domain to explode, leading to excessive memory usage and termination of the simulation. Adjusting the particle spacing can sometimes help avoid instability points or stress concentrations and reduce overall memory usage.

RE: GeoXPM output tutorial

Tien Nguyen (Smith) — Tue, 20 Jan 2026 01:56:21 +0000

@madelestin You can find the real-time output in the file Run.out, located in the project’s _out folder.

3D terrain integration

Tanishq09 — Mon, 19 Jan 2026 11:28:42 +0000

I have the DEM's of pre and the post event. But to slice the pre dem stl from the post dem stl, is it necessary that the DEM's should have thickness like the one given in GeoXPM tutorial. Can i cut the dem's directly in the GeoXPM without having the thicknesses in the stl file. Or is there any other way, please help me out.
Also, if we obtained the sliding mass and the stationary object then how we are going to flow that sliding mass over the terrain, because the tutorial present in the site doesn't mention anything about this.
Please help me.......

3D terrain problem

Tanishq09 — Mon, 19 Jan 2026 11:19:29 +0000

RE: reporting bugs/problems when running GeoXPM

madelestin — Wed, 31 Dec 2025 11:41:31 +0000

I have quite the same issue, the simulation stop midway is there any way to check what the cause of it? because as i changed the particle distance the error is no longer that
but i would like to know the effect of particle distance to my simulation

error.png