HyperWorks Solvers

/IMPL/RREF/OFF

/IMPL/RREF/OFF

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/IMPL/RREF/OFF

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Engine Keyword

/IMPL/RREF/OFF - Deactivation of Reference Residual Option

Description

Deactivation reference residual option and using the previous one in stop criteria for implicit nonlinear analysis.

Format

/IMPL/RREF/OFF

Comments

1./IMPL/RREF becomes the default option from this version. In this case, Residual r = fext - fint - Ma, ||r||0 = max(||fext||, || fint||, ||Ma||), (a =0 for static).

When /IMPL/RREF/OFF is used, the previous criteria is used: ||r||0 = ||r|| at the beginning of each cycle.

2.This keyword is used only for implicit nonlinear implicit, and is generally more difficult to converge.

See Also:

Implicit Finite Element Analysis