# Dynamic Rupture Simulation in Pylith-4.2

**URL:** <https://community.geodynamics.org/t/dynamic-rupture-simulation-in-pylith-4-2/4255>\
**Category:** PyLith\
**Created:** [August 20, 2025, 5:19pm UTC](https://community.geodynamics.org/t/dynamic-rupture-simulation-in-pylith-4-2/4255 "2025-08-20T17:19:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dyrussss](https://avatars.discourse-cdn.com/v4/letter/d/c89c15/32.png) [@Dyrussss](https://community.geodynamics.org/u/Dyrussss)\
**Post date:** [August 20, 2025, 5:19pm UTC](https://community.geodynamics.org/t/dynamic-rupture-simulation-in-pylith-4-2/4255/1 "2025-08-20T17:19:57Z")

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Hello!

I’m a beginner of Pylith. I want to know if it’s possible to simulate dynamic rupture in Pylith-4.2. I couldn’t find FaultCohesiveDyn in version 4.2, which was available in version 2.2.2.

Any replies and suggestions will be valuable to me.

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**Author:** ![baagaard](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/baagaard/32/615_2.png) [@baagaard](https://community.geodynamics.org/u/baagaard)\
**Post date:** [August 20, 2025, 5:34pm UTC](https://community.geodynamics.org/t/dynamic-rupture-simulation-in-pylith-4-2/4255/2 "2025-08-20T17:34:28Z")

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Spontaneous rupture (fault friction) is not yet ported to the multi-physics formulation used in PyLith v3 and after. This feature is under active development.

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**Author:** ![Dyrussss](https://avatars.discourse-cdn.com/v4/letter/d/c89c15/32.png) [@Dyrussss](https://community.geodynamics.org/u/Dyrussss)\
**Post date:** [August 21, 2025, 5:38am UTC](https://community.geodynamics.org/t/dynamic-rupture-simulation-in-pylith-4-2/4255/3 "2025-08-21T05:38:08Z")

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Thank you！ I successfully installed Pylith-4.2, but I failed to install v2.2.2. I will continue to try to install v2.2.2. Thank you for your reply again.