Updates and news about the MaterialMap project as of early October 2025.

[Yury Novozhilov]

First, I added dozens of high-energy materials based on *EOS_JWL(_AFTERBURN) and *EOS_IGNITION_AND_GROWTH_OF_REACTION_IN_HE. So even for imperfect detonation, there are now many properties.

Second, I identified several dozen parameter sets for two models: HJC Concrete (*MAT_JOHNSON_HOLMQUIST_CONCRETE) and JH-2 (*MAT_JOHNSON_HOLMQUIST_CERAMICS). The library now features properties for ceramic armor, a variety of rocks, and Steel Fiber-Reinforced Concrete (SFRC) and Ultra-High-Performance Concrete (UHPC). There are even properties for sapphire, if you suddenly decide to calculate in detail the destruction of the glass of your Swiss watch.

And thirdly, the cherry on top, I added three new calculators for identifying concrete properties.
- The first one allows you to determine the parameters of HJC models (*MAT_JOHNSON_HOLMQUIST_CONCRETE) for high-strength concrete in high-speed impact problems—this model does not have its own "easy-input". -
- Next, I found an alternative calibration for the K&C model (*MAT_CONCRETE_DAMAGE_REL3) from Ben-Gurion University. All these calibrations not only increase accuracy but also expand the range of simulated concrete strength classes.
- And the third calculator is dedicated to my favorite model, CSCM (*MAT_CSCM_CONCRETE). The methodology for recalibrating and verifying this model became a key component of my doctoral dissertation.

All of this is available to everyone, completely free of charge, and with open-source code. To support the project, please share the news about MaterialMap and repost it as often as possible.

The last. The most commonly used material model in LS-DYNA is *MAT_PIECEWISE_LINEAR_PLASTICITY / *MAT_024. Although the solver supports more than 300 different models, we all like to use MAT_024 as a first approximation when performing PoC. During my two-week vacation, I created a new Piecewise Linear Plasticity Calculator, which replaced the Swift Law Calculator in my MaterialMap project. 

What you should know about the calculator:
- As before, a smooth approximation of the plastic hardening curve of the material is generated based on several input data points using Swift Law.
- A selection of Cowper–Symonds model coefficients from the built-in DB with source links is offered to account for strain rate effects.
- The stress-strain curve of the material is visualized both statically and considering strain rate effects.
- A full-fledged LS-DYNA cards *MAT_PIECEWISE_LINEAR_PLASTICITY + *DEFINE_CURVE_STRESS are generated.
- Conversion of parameters to basic consistent measurement systems is fully supported.

… And one more thing! The page allows you to load parameters for 1044 (!!!) materials thanks to the integration of the open and free VarmintAl material library. And that includes:
- Steels - 657 materials (stainless, structural, tool)
- Aluminum alloys - 190 materials (1xxx-8xxx series)
- Magnesium alloys - 80 materials (AZ, ZK, HK series)
- Titanium alloys - 34 materials (pure Ti + special alloys)
- Non-ferrous metals - 52 materials (copper, brass, bronze, precious metals)
- Rare materials - 20 materials (refractory, beryllium, radioactive)
- Polymers and others - 11 materials (plastics, iron, lead)

[l...@schwer.net]

Would you kindly post the URL (link) once again?   --len

--
You received this message because you are subscribed to the Google Groups "LS-DYNA2" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ls-dyna2+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/ls-dyna2/a554f123-3a73-4bdf-a25c-e7af72f81c48n%40googlegroups.com.

[Yury Novozilov]

Dear Dr. Schwer,

The link is https://materialmap.github.io/

—

All best,

Yury Novozhilov

06.10.2025, в 09:28, l...@schwer.net написал(а):



<image001.png>

<image002.jpg>

<image003.png>

<image004.png>

[lesz...@gmail.com]

Hi,

Using LS-Run, I can press the SW3 switch to dump a d3full and resume the computation.

Is there a keyword option to create d3full files automatically, for example, every few hours?

The options below don’t work.

P.S. I’ve read the manual, Google, and two posts here—they explain how to run a restart. I’m asking how to force automatic d3full dumps while LS-DYNA is running, ideally via a keyword in the key file, because a night-time power outage could stop the job and I could lose all progress. This has already happened to me.

Kind regards,

Leszek

To view this discussion visit https://groups.google.com/d/msgid/ls-dyna2/4FA1C411-36EA-4277-85B7-44EC1BFB5FCE%40gmail.com.

[ziyande...@gmail.com]

Why wouldn’t database cards work?

 

You can also do this outside the input file by sending a d3kill command via VS code every x number of hours.   Every time a d3kill file is placed in the working directory, it will generate a dump file (100 cycles). 

To view this discussion visit https://groups.google.com/d/msgid/ls-dyna2/000001dc3af8%24846ae290%248d40a7b0%24%40gmail.com.

[Vincnet]

Impressive. Thank you ! 

Would it be easy / possible to add a tool that automatically changes the unit system for each material card, after asking the user which system they are using?