Stiffness properties

Note: This is optional. NO_REDUCTION is applied by default.

Setting the stiffness arrays and these options will allow for IMPETUS Solver to control the critical time step calculations. If set, reduction operations (per element) will be performed for the specific data array(s).

Options for each stiffness variable:

  • NO_REDUCTION: No changes are made to the original values
  • MAX_REDUCTION: The maximum value reduction is applied for each element
  • MIN_REDUCTION: The minimum value reduction is applied for each element

These reduction operations affect the following data arrays defined in UserMatDevice struct:

  • stiff_shear affects device.dp_shear
  • stiff_bulk affects device.dp_bulk
  • stiff_xi affects device.dp_xi
  • stiff_bfac affects device.dp_bfac

Class member variables

 int stiff_shear
 int stiff_bulk
 int stiff_xi
 int stiff_bfac

Description

bool stiff_shear

Setting this property will apply reduction operations on the data.dp_shear array.

Options:

  • NO_REDUCTION: No changes are made to the original values
  • MAX_REDUCTION: The maximum value reduction is applied for each element
  • MIN_REDUCTION: The minimum value reduction is applied for each element

int stiff_bulk

Setting this property will apply reduction operations on the data.dp_shear array.bulk` array.

Options:

  • NO_REDUCTION: No changes are made to the original values
  • MAX_REDUCTION: The maximum value reduction is applied for each element
  • MIN_REDUCTION: The minimum value reduction is applied for each element

int stiff_xi

Setting this property will apply reduction operations on the data.dp_shear array.xi` array.

Options:

  • NO_REDUCTION: No changes are made to the original values
  • MAX_REDUCTION: The maximum value reduction is applied for each element
  • MIN_REDUCTION: The minimum value reduction is applied for each element

int stiff_bfac

Setting this property will apply reduction operations on the data.dp_shear array.bfac` array.

Options:

  • NO_REDUCTION: No changes are made to the original values
  • MAX_REDUCTION: The maximum value reduction is applied for each element
  • MIN_REDUCTION: The minimum value reduction is applied for each element