# Query regarding use of block thermal substep in UDEC

**URL:** <https://forum.itascainternational.com/t/query-regarding-use-of-block-thermal-substep-in-udec/1562>\
**Category:** UDEC\
**Created:** [July 1, 2024, 12:06pm UTC](https://forum.itascainternational.com/t/query-regarding-use-of-block-thermal-substep-in-udec/1562 "2024-07-01T12:06:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SamVarun10](https://avatars.discourse-cdn.com/v4/letter/s/b782af/32.png) [@SamVarun10](https://forum.itascainternational.com/u/SamVarun10)\
**Post date:** [July 1, 2024, 12:06pm UTC](https://forum.itascainternational.com/t/query-regarding-use-of-block-thermal-substep-in-udec/1562/1 "2024-07-01T12:06:00Z")

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![image](https://canada1.discourse-cdn.com/flex031/uploads/itasca/original/2X/0/08e2d852f300ba191d1a74af4c6d89c06f0c46dc.png)  
Hello,  
I want to apply a thermo-coupled step on a block on which after heating the joints are broken(Thermal effects). I think block thermal substep is the way to achieve it. But I couldn’t understand how to go ahead with it. Can somebody please explain how to use this thermal substep.(As in does the thermal substep is written before or after/Do we need to write step or not)?

Thanking You