Thank you for your comments. They have been passed on to our software team. You might find this FLAC2D example of some interest: docs.itascacg.com/itasca930/flac3d/zone/test2d/ExampleApplications/TailingStaticLiquefaction/tailingstaticliquefaction.html.

Hello. There are some limitations with the demo version. For example, your FLAC2D model must be <= 1,000 zones in size.

Thank you for using ITASCA software and for your valuable feedback. We’d like to clarify the distinction between perpetual and subscription licenses. Perpetual products are exactly that-perpetual-and historically, they’ve received bug fixes but not new features. Major upgrades for perpetual licenses occur on a release cycle of approximately every three years, with the next major release being Version 10. The summation of all the Version 9 point releases will comprise Version 10. Subscription products, on the other hand, offer continual access to the latest developments throughout the subscription term. With a subscription license, you benefit from ongoing updates, including both major and minor features, as they’re developed. What has changed is that we are now releasing the next major version incrementally, making each point release available to subscribers as soon as it’s ready. When Version 10 is fully available, those who prefer perpetual licenses can then purchase Version 10 to gain access to all the Version 9 point-release features. Additionally, we now offer a maintenance plan for perpetual license holders, which combines the stability of a perpetual license with the flexibility of a subscription. This plan grants perpetual license holders access to all the latest technology released to subscription holders during the term of the maintenance plan. If this sounds like something you'd like to explore, feel free to contact us at [email protected]. And once again, thank you for choosing ITASCA Software!

Hello. For technical support, please use our online form: www.itasca.se/contact-itasca/software-support-request. Please have your Griddle license number handy. This will ensure the quickest response to your questions. Thank you for using ITASCA software.

Refer to docs.itascacg.com.

Thank you for your suggestion. We have an example of this for FLAC 8.1 that we're working on adapting for FLAC2D.

It's hard to comment without seeing your project/data files, but try to run your project in a different folder. If this doesn't help. please contact our Technical Support Team via our website: www.itascacg.com/contact-itasca/software-support-request.

@@itascasoftware Thank you for your response. I contacted the technical support team and it has been sorted.

Yes, internally we once had a version 8 of FLAC(3D). This was renamed to FLAC(3D) 9 with the advent of FLAC(2D) though, as FLAC 8.1 (original 2D software) already existed. Essentially, FLAC3D 8 and 9 are the same program.

@@itascasoftware Thank you for your clarification 🙏

Yes, PFC3D and PFC2D has been used to model intact and fragmented coal.

The XSite User's Guide has been completely updated with Version 4.0 and is an excellent resource. Although it may refer to new features, it should be otherwise backwards compatible for Version 3.0. You can find it on the XSite 4.0 download page: www.itascacg.com/software/downloads/xsite-400.

Currently this is not something that can be done with hybrid bolts. However, we will be adding this improvement to the development list. Cable structural elements may be pretensioned via the structure cable apply tension command. See docs.itascacg.com/itasca910/common/sel/doc/manual/sel_manual/cables/cables.html?node1353#mechanical-behavior.

Actually, it turns out that this has already been implemented as of v900. See the relevant command here: docs.itascacg.com/itasca900/common/sel/doc/manual/sel_manual/hybrid/commands/cmd_structure.hybrid.apply.html?node1412.

@@itascasoftware pls help me, i also have a question in hybrid bolt 3dec 7.0., there are two methods to apply force for hybrid bolt, one is add tension f when create hybrid bolt, two apply force to nodes. what the differences between them.

@@李新鸿, please contact our Technical Support Team via our online form: www.itascacg.com/contact-itasca/software-support-request.

You can find a PDF of this presentation here: www.itascacg.com/learning/webinars/whats-new-in-flac3d-v9.

To do this, you could write a FISH (or Python) function to perform a bubble (or comparison) sort by looping through all of the blocks in your model, checking each block's volume, via the built-in function block.vol(...), and saving the value to a min or max variable depending on how it compares to the previous block volume. While doing this, sum up all the block volumes and divide by the number of blocks looped through for the average. This is a good type of question for ITASCA's Software Forum (forum.itascainternational.com) and you can always check with our Technical Support team here: www.itascacg.com/contact-itasca/software-support-request. In 3DEC version 7 and greater we have added multi-threaded FISH functionality which can work with data associated with model elements (e.g., blocks) as lists and then you could just query for the min, max, and average values.

In this example we are demonstrating how you can use the extruder (now called Sketch) tool to extend the model out of the plane to build a 3D model.

Hello. FLAC3D 4 was released in 2009 and is no longer supported and we cannot guarantee that it will run on a modern PC. If you have a v4 license and are seeking the software installer, please contact our technical support team at www.itascacg.com/contact-itasca/software-support-request.

Thank you for your comment. Please contact our Technical Support team with your question and if you could include a few more details of the problem, that would be helpful. You can submit requests here: www.itascacg.com/contact-itasca/software-support-request.

Check out this highway embankment example for FLAC2D: docs.itascacg.com/itasca900/flac3d/zone/test2d/ExampleApplications/FromFLAC/14HighwayEmbankment/HighwayEmbankment.html. Since FLAC2D is based on FLAC3D it should be easy to apply this in 3D case. Just remember that FLAC2D is based on Y-axis being up, while FLAC3D is based on Z-axis being up.

You can download the tunnel extrusion example, including the bolts DXF, here: itasca.sharefile.com/d-s847d192347b245ffbf9c0355017f6c64.

Thankyou very much sir. But sir when I'm importing the dxf file it is given an error stating that .dxf doesn't exists. What should I do sir for this error?

@@amlipursaishankar6551 Please contact FLAC3D Technical Support for help with this. You can contact them online here: www.itascacg.com/contact-itasca/sw-tech-support-flac3d. It would be helpful if you included an screen capture of the dialog and error message.

Previously there was an extrusion icon to switch to the side view where the rotation icon is now. The new Sketch UI added a view plane dropdown (front, side, top, and bottom) to the Sketch menu. The front view plane (XY) is the default and a good orientation for revolving around the z-axis or x-axis. The conventional extruder works best from the side view. Essentially we're making some changes to the UI as we work towards even more powerful extrusion and meshing tools.

@@itascasoftware So, there is no difference between the 3D extruded from the sketch and the one obtained from the building block? Further, where can I find the unit setup section?

@@sameeplamsal8579the Sketch and Building Blocks are two different tools for mesh creation available within FLAC3D. Whereas the Sketch tool allows you to quickly draw a section view and extrude it out-of-the-plane, Building-Blocks lets you snap together and manipulate blocks into forming your final model. You can also use a 2D DXF as a starting point when creating the 2D profile in Sketch. The Sketch tool can export a model directly to the model pane or it can also export the model to Building-Blocks should you want to modify the mesh some more (e.g., tapper the end blocks of an extrusion at some angle). You can learn about to use consistent systems of units (of measurement) in FLAC3D here: docs.itascacg.com/itasca900/common/docproject/source/manual/program_guide/modelformulation/systemofunits.html?highlight=units. For technical support, please contact ITASCA at www.itascacg.com/contact-itasca/software-support-request or check out out Software Forum at forum.itascainternational.com. Thank you for using ITASCA software.

@@itascasoftware Thank you. But I still didn't understand the significance of rotation about axis while extruding the sktech geometry? Should I not bother about this and just give offset value to make it a 3D? I am using FLAC 3D V9.

@@sameeplamsal8579, the rotation about an axis is only necessary if you want to form a revolved solid mesh (think symmetrical cone for a stock pile or a cylindrical tower or a vase). But for a simple linear extrusion (into the page) switch the view to "Side" and specify the depth and zone resolution along the extruded axis. See docs.itascacg.com/itasca900/flac3d/extruder/doc/manual/sketch_pane/ops_in_extrusion_view/opsinextrusionview.html?node2761. There is also this example (uses older UI, but go to Side view and will be essentially the same): docs.itascacg.com/itasca900/flac3d/zone/test3d/TheoryAndBackground/FactorOfSafety/BenchExtrusion/BenchExtrusion.html?node113. We will work on providing a new tutorial example that helps to walk through this process.

When you first start up FLAC, you will first see a Model options dialog. Click OK and the Project File dialog will pop-up asking for a project title (optional) and a [project] filename (*.prj) - enter a filename and click OK to save the project in your current directory or click the yellow folder icon to move to a different folder or create a new one. To get back to the Options dialog or the Project dialog, use main menu File > New project... Also, at any time you can use the main menu (File > Save project... or > Save project as...). You can see this in this video around 42 seconds.

I appreciate any help in advance.

​Thanks for your question. We do not currently have the SCLAY1 constitutive model available in FLAC3D and I do not see it available via our UDM Library (www.itascacg.com/software/udm-library). Also, Python is not inherently set-up for creating user-defined constitutive models currently. A few options here are (1) see if the soft-soil creep constitutive model (docs.itascacg.com/itasca900/common/models/softsoilcreep/doc/modelsoftsoilcreep.html?node3640) might be useful for your case - requires the creep option or (2) use the user-defined material model option to create a custom constitutive model using C++. Templates are provided for the latter and you can learn more here: docs.itascacg.com/itasca900/flac3d/docproject/source/options/cppplugin/writeyourownmodel.html?node3603. If you have more questions, please contact Technical Support via www.itascacg.com/contact-itasca/software-support-request.

@@itascasoftware I appreciate your comprehensive response. Thank you!

With FLAC2D, automatic meshing is built-in. You can import a DXF to help with model construction or use the available drawing tools to draw your model and then you can mesh it - all using Sketch. Refer to the chapters (in the video description) that discuss "Model Building in Sketch" and the "Example Demo". If you have FLAC 8.1, you can also export your model to FLAC2D.