/KEREL

Engine Keyword Kinetic energy relaxation.

Format

/KEREL

Tstart Tstop

Definitions

Field Content SI Unit Example
Tstart (Optional) Start time for kinetic energy relaxation.

Default = 0.0

 
Tstop (Optional) Stop time for kinetic energy relaxation.

Default = Final time of the analysis

 

Comments

  1. Set all velocities to 0 each time the kinetic energy reaches a maximum.

    engine_kerel_chart
    Figure 1.
  2. It is not advised to use /KEREL with combined Advanced mass Scaling and Single Precision.
  3. If the maximum kinetic energy is reached due to the elastic vibration of shell or solid part, the result can be wrong because the stress, strain and strain rate tensors in the element will no longer be in equilibrium.