HyperWorks Solvers

/IMPL/DT/1

/IMPL/DT/1

 Previous topic Next topic No expanding text in this topic  

/IMPL/DT/1

 Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function  

Engine Keyword

/IMPL/DT/1 - Implicit Time Step Control - Method 1

Description

Implicit time step control method 1.

Format

/IMPL/DT/1

lt_w   symbol_tri-boldTsca_i   L_dtn   symbol_tri-boldTsca_d

Data

Description

lt_w

If the solution of a time step converges within It_w iterations, the next time step will be increased by a factor of symbol_triTsca_i

= 0: set to 2

symbol_triTsca_i

Scale factor for increasing the time step.

= 0: set to 1.1

L_dtn

Maximum number of iterations before resetting and decreasing the time step by a factor of symbol_triTsca_d.

= 0: set to 15

symbol_triTsca_d

Scale factor for decreasing the time step.

= 0: set to 0.67

Comments

1.If /IMPL/DT/1, /IMPL/DT/2, or /IMPL/DT/3 are not present, the only time step controls are /IMPL/NCYCLE/STOP and /IMPL/DT/STOP. In the case of divergence, the time step will be reduced by half and repeated.

See Also:

Implicit Finite Element Analysis

Example 16 - Dummy Positioning