History_global
Contents
Data Structure: History_global |
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Description |
History data for global quantities |
Usage |
History_global NUM=ival where ival is the data structure number |
Description |
Overview History_global defines the output of time histories of global quantities to a history file. The time history data is written as an ASCII file in comma delimited column format to:
datafile_000.hdh
where datafile is the data file name for the model.
The output information comprises: •Convergence data •Energy in the geomechanical field •etc (see specific dataset descriptions for further details)
Notes •Only one History_global data structures may be specified
Examples demonstrating the usage of History_global include: •damp_2d4n_001a.dat •hm_2d4n_001e.dat •inc_2d4n_004b.dat
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 | Active_flag Coupled freedom active flag |
Usage |
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Description |
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Defines whether the coupled freedom set is active. Generally not required as it is set by default. Valid values are: •-1 - Deactivate and remove if defined • 0 - Not defined • 1 - Defined and active
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| Output_frequency_increment Increment output frequency |
Usage |
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Description |
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The number of time steps between each output to the history file.
Notes •If both incremental output frequency Output_frequency_increment and Output_frequency_time are specified then both will be used •Output will always be performed at the end of a control step
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| Output_frequency_time Time output frequency |
Usage |
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Description |
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The time between each output to the history file
Notes •If both incremental output frequency Output_frequency_increment and Output_frequency_time are specified then both will be used •Output will always be performed at the end of a control step
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| Mech_convergence_data Geomechanical convergence data |
Usage |
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Description |
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Labels defining the convergence data that may be output to the global history file. Valid labels are: • Dis_norm - Displacement norm (mechanical field only) • Res_norm - Residual norm (mechanical field only) • Eng_norm - Energy norm (mechanical field only)
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| Mech_global_energy_data Global energy data |
Usage |
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Description |
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Labels defining the energy data that may be output to the global history file. Valid labels are (geomechanical field only): • Initial - Initial energy • External - External energy change (work done by applied loading) • Kinetic - Kinetic energy • Elastic - Elastic strain energy • Inelastic - Energy dissipated by inelastic deformation of the bulk material • Friction - Frictional energy dissipated by contact • Cont_damp - Contact damping energy • Damping - Energy dissipated by low frequency damping energy • Bulk_visc - Energy dissipated through high frequency smoothing via a bulk viscosity • Hourglass - Energy dissipated by viscous hourglass forces
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