Temperature (25C to 1000C) and velocity (200m/s to 5000m/s) effect on Impact

- April 22, 2024 at 10:26 am
  
  VAGISH MISHRA
  Subscriber
  
  Hi All,
  I am trying to study the temperature (25C to 1000C) and velocity effect (200m/s to 5000m/s) on the impact of 2 solid objects (Steel and Aluminum).
  I am using the Johnson-Cook model for the materials. Still, I do not see any effect of Velocity and temperature.
  Kindly let me know the source where I can learn and correct my mistakes.
  
  Thank you in advance
- April 22, 2024 at 1:42 pm
  
  Armin
  Ansys Employee
  
  Hi Vagish,
  Could you describe how you calibrate and implement coefficients of Johnson-Cook model for the steel and aluminum in your impact simulation?
- April 26, 2024 at 4:33 am
  
  VAGISH MISHRA
  Subscriber
  
  Hi,
  
  I used the data provided in the literature. I assigned the data to the Material property section (MAT; 015: Johnson-Cook). Kindly let me know if you want any other information.
  Thank you.
- April 26, 2024 at 1:42 pm
  
  Armin
  Ansys Employee
  
  Thanks Vagish.
  I would suggest you investigate this further at local (or element) level to evaluate the strain rates the same elements of the model are experiencing at the two different velocities. If the strain rates experienced by the elements of interest are different, they should demonstrate different mechanical responses provided that the model is set up properly.