# Time varying temperature field on Johnson-Cook material model

**URL:** <https://prepomax.discourse.group/t/time-varying-temperature-field-on-johnson-cook-material-model/1106>\
**Category:** General Questions\
**Tags:** material-definition\
**Created:** [September 21, 2023, 2:18pm UTC](https://prepomax.discourse.group/t/time-varying-temperature-field-on-johnson-cook-material-model/1106 "2023-09-21T14:18:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [September 21, 2023, 2:18pm UTC](https://prepomax.discourse.group/t/time-varying-temperature-field-on-johnson-cook-material-model/1106/1 "2023-09-21T14:18:24Z")

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Hi,

I would like to know if ¿Is it possible to apply a time varying temperature field to a Johnson-Cook Material model.?  
Plasticity has shown to work properly but now I can’t find how to introduce a uniform linear increase in temperature up to the melting point.  
Nonlinear doesn’t show an amplitude option and Coupled / Uncoupled temperature-displacement doesn’t seem to have temperature field implemented.

 ![screenshot.355](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/a/a581d6eafd26dd211efc3c9b365dc4798f9e1e1d.jpeg)

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [September 21, 2023, 2:43pm UTC](https://prepomax.discourse.group/t/time-varying-temperature-field-on-johnson-cook-material-model/1106/2 "2023-09-21T14:43:43Z")

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Defined temperature field can’t be applied in procedures with temperature DOF, you would have to prescribe the temperature as a boundary condition (of course, amplitude can be used) in such a procedure.

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**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [September 21, 2023, 5:59pm UTC](https://prepomax.discourse.group/t/time-varying-temperature-field-on-johnson-cook-material-model/1106/3 "2023-09-21T17:59:12Z")

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It worked !!. Thanks. I,m cheking results make sense.