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Hi all.
And what about the energy error? Which value that this parameter should be less than?
Hi Pohan,
The energy error percentage is the parameter that checks the energy conservation during each numerical cycle and it is computed by RADIOSS is a percentage. If the energy error is negative it means that some energy has been dissipated. If the error is positive there is an energy creation. If the positive energy error is high, the source of this energy has to be identified. Incompatible kinematic conditions can lead to such a situation. Normally, the energy error must be negative and decreasing (except for the first cycle ). The error should be less than 15% at the end of computation but if the model undergoes high plastic deformation the energy error can increase.
Hi George.
Sometimes, almost of the energy errors are high and only some cycles at the end of computation have small energy errors. Is it ok?
If the initial energy in the system is low, then it is possible to have large Energy Errors early in a simulation that reduce as energy is added to the system and this is fine.
This is because, small numerical differences in the energy causes large percentage Energy Errors.
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