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Altair EmployeeHi Subhu,
External work is any external loading applied in the simulation. This can include, Imposed movement (displacement, velocity or acceleration), force (/CLOAD or /GRAV), and pressure to name a few. Work by done an external force on a system is always a transfer of energy to some other form of energy and this negative work represents the transfer of energy during the simulation and this is fine.
Hi,
Please let me know below mentioned energy relations are correct or not.
External work = Internal energy+kinetic energy+contact energy+hourglass energy
Total energy = Internal energy + kinetic energy
@jsk459 Yes the above relation is correct.
External work = Internal energy+kinetic energy+contact energy+hourglass energy
This is NOT correct.
External Work includes the work from Imposed movement (displacement, velocity or acceleration), force (/CLOAD or /GRAV), and pressure. It also include the frictional energy from a /RWALL (when FRIC!=0.0)
If there are only an initial velocity, gravity and a rigid wall in the model then I would assume the high negative external work is caused by the friction on the rigid wall and maybe gravity. It is difficult to say without seeing the model.
Thank,
Andy
The External Work Forces is Decreasing. Is this Good??
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