Ansys 19, Strain rate effect on material properties

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  • Last Post 05 July 2019
suleyman41 posted this 01 July 2019

Hello, I want to learn that how I add strain rate effect material properties. 

 

I have a stress-strain curve for multi-linear hardening. but not only one strain rate, but also I have a different stress-strain rate. 

how I define this style of material properties in Ansys?   

 

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jj77 posted this 01 July 2019

For strain rate sensitive material (e.g., steel), often the Johnson Cook (JC) model is used, in explicit dynamics - see the help manual on that.

(Not sure how to use/convert your data into the JC parameters needed in Ansys - perhaps if you look on the internet or if someone else knows)

 

Also this is of help:

https://caeai.com/blog/importance-including-strain-rate-effects-explicit-dynamics-material-models

suleyman41 posted this 05 July 2019

Thank you for your answer.

I have a stress-strain graph. accept melting temperature and ambient temperature constant. i've stress-strain curve and  strain rate, how can I determine the johnson-cook parameters using the data I have.,

 

I have this one, and also strain rate, may i determine johnson cook parameters. temperatures are constant value.

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