Rotator Units
The rotator is a helper unit to achieve profile rotation before feeding into the next roll pass.
The angle of rotation is determined Rotator.rotation
hook, whose value must be in degree (may be negative).
Default implementations of Rotator.rotation
determine appropriate default values by examining the type classifiers of the incoming profile and the next roll pass in the unit sequence (determined using the Rotator.next_roll_pass
property).
The default implementations prefer rotation by 90° over no rotation, if both are appropriate.
Currently, there are the following defaults:
type of in profile |
type of roll pass |
rotation in ° |
---|---|---|
diamond |
diamond |
90 |
oval |
round |
90 |
round |
oval |
90 |
oval |
square |
90 |
square |
oval |
45 |
box |
box |
90 |
box |
diamond |
45 |
box |
oval |
90 |
square |
box |
45 |
round |
flat |
90 |
The recommended way to influence the rotation is by using the RollPass.rotation
hook, unless one has a concrete need for a dedicated rotator unit.
In contrast to Rotator.rotation
its value may also be a bool, where False
equals 0
and True
means automatic determination by hook functions of Rotator.rotation
(f.e. using the defaults above).
The roll pass unit will create an appropriate rotator upon its solution initialization and use its outgoing profile as input for itself.
If a dedicated rotator unit is present in the sequence between the current roll pass and its predecessor roll pass, automatic rotation will be disabled, as it is then assumed, that correct rotation has already happened.
To be explicit, one has basically two ways to influence the profile rotation:
using
RollPass.rotation
sequence = PassSequence([ RollPass(...), ..., RollPass( ..., rotation=45, ..., ), ..., RollPass(...) ])
using a dedicated rotator and
Rotator.rotation
sequence = PassSequence([ RollPass(...), ..., Rotator(rotation=45), RollPass(...), # automatic rotation here is skipped, since upstream Rotator is detected ..., RollPass(...) ])
Of course, both ways can be used by implementing hook functions to.
- class Rotator(label: str = '', parent=None, **kwargs)
Represents a unit rotating a profile around the rolling axis (mostly for feeding into next roll pass).
- class InProfile(unit: Unit, template: Profile)
Represents an incoming profile of a rotator.
Using the
__init__
is not recommended, use one of the factory class methods instead.- chemical_composition
Chemical composition of the profile’s material as dict of element symbols to atom fractions (0 to 1).
- classifiers
Classifiers of the profile’s shape’s type.
- core_temperature
Temperature of the profile core.
- cross_section
Shape of the profile’s cross-section.
- density
Mean density (specific weight) of the profile material.
- elastic_modulus
Mean elastic modulus of the profile material.
- equivalent_height
Height of the equivalent rectangle.
- equivalent_radius
Radius of a equivalent round.
- equivalent_rectangle
Equivalent rectangle geometry for use with equivalent flat pass models.
- equivalent_width
Width of the equivalent rectangle.
- flow_stress
Mean flow stress of the profile material.
- flow_stress_function
Flow stress depended on strain, strain-rate and temperature
- grain_size
Average grain size of the profile’s material.
- heat_penetration_number
Mean heat penetration number of the profile material.
- height
Maximum height (y-direction).
- length
Length of the workpiece (x-direction).
- material
String or sequence of strings classifying the material of the profile. Can be used by material databases to retrieve respective data.
- microstructure_composition
Phase resp. constituent composition of the profile’s material as dict of constituent names to volume fractions (0 to 1).
- poissons_ratio
Mean Poisson’s ratio of the profile material.
- scale_thickness
Thickness of the scale covering the profile.
- specific_heat_capacity
Mean specific heat capacity of the profile material.
- strain
Mean equivalent strain of the profile cross-section.
- surface_temperature
Mean temperature of the profile surface.
- t
Temporal coordinate.
- temperature
Mean temperature of the profile cross-section.
- thermal_conductivity
Mean thermal conductivity of the profile material.
- thermal_diffusivity
Mean thermal diffusivity of the profile material.
- velocity
Mean material flow velocity.
- width
Maximum width (z-direction).
- x
Spacial coordinate in rolling direction.
- class OutProfile(unit: Unit, template: Profile)
Represents an outgoing profile of a rotator.
Using the
__init__
is not recommended, use one of the factory class methods instead.- chemical_composition
Chemical composition of the profile’s material as dict of element symbols to atom fractions (0 to 1).
- classifiers
Classifiers of the profile’s shape’s type.
- core_temperature
Temperature of the profile core.
- cross_section
Shape of the profile’s cross-section.
- density
Mean density (specific weight) of the profile material.
- elastic_modulus
Mean elastic modulus of the profile material.
- equivalent_height
Height of the equivalent rectangle.
- equivalent_radius
Radius of a equivalent round.
- equivalent_rectangle
Equivalent rectangle geometry for use with equivalent flat pass models.
- equivalent_width
Width of the equivalent rectangle.
- flow_stress
Mean flow stress of the profile material.
- flow_stress_function
Flow stress depended on strain, strain-rate and temperature
- grain_size
Average grain size of the profile’s material.
- heat_penetration_number
Mean heat penetration number of the profile material.
- height
Maximum height (y-direction).
- length
Length of the workpiece (x-direction).
- material
String or sequence of strings classifying the material of the profile. Can be used by material databases to retrieve respective data.
- microstructure_composition
Phase resp. constituent composition of the profile’s material as dict of constituent names to volume fractions (0 to 1).
- poissons_ratio
Mean Poisson’s ratio of the profile material.
- scale_thickness
Thickness of the scale covering the profile.
- specific_heat_capacity
Mean specific heat capacity of the profile material.
- strain
Mean equivalent strain of the profile cross-section.
- surface_temperature
Mean temperature of the profile surface.
- t
Temporal coordinate.
- temperature
Mean temperature of the profile cross-section.
- thermal_conductivity
Mean thermal conductivity of the profile material.
- thermal_diffusivity
Mean thermal diffusivity of the profile material.
- velocity
Mean material flow velocity.
- width
Maximum width (z-direction).
- x
Spacial coordinate in rolling direction.
- class Profile(unit: Unit, template: Profile)
Represents a profile in context of a rotator.
Using the
__init__
is not recommended, use one of the factory class methods instead.- chemical_composition
Chemical composition of the profile’s material as dict of element symbols to atom fractions (0 to 1).
- classifiers
Classifiers of the profile’s shape’s type.
- core_temperature
Temperature of the profile core.
- cross_section
Shape of the profile’s cross-section.
- density
Mean density (specific weight) of the profile material.
- elastic_modulus
Mean elastic modulus of the profile material.
- equivalent_height
Height of the equivalent rectangle.
- equivalent_radius
Radius of a equivalent round.
- equivalent_rectangle
Equivalent rectangle geometry for use with equivalent flat pass models.
- equivalent_width
Width of the equivalent rectangle.
- flow_stress
Mean flow stress of the profile material.
- flow_stress_function
Flow stress depended on strain, strain-rate and temperature
- grain_size
Average grain size of the profile’s material.
- heat_penetration_number
Mean heat penetration number of the profile material.
- height
Maximum height (y-direction).
- length
Length of the workpiece (x-direction).
- material
String or sequence of strings classifying the material of the profile. Can be used by material databases to retrieve respective data.
- microstructure_composition
Phase resp. constituent composition of the profile’s material as dict of constituent names to volume fractions (0 to 1).
- poissons_ratio
Mean Poisson’s ratio of the profile material.
- scale_thickness
Thickness of the scale covering the profile.
- specific_heat_capacity
Mean specific heat capacity of the profile material.
- strain
Mean equivalent strain of the profile cross-section.
- surface_temperature
Mean temperature of the profile surface.
- t
Temporal coordinate.
- temperature
Mean temperature of the profile cross-section.
- thermal_conductivity
Mean thermal conductivity of the profile material.
- thermal_diffusivity
Mean thermal diffusivity of the profile material.
- velocity
Mean material flow velocity.
- width
Maximum width (z-direction).
- x
Spacial coordinate in rolling direction.
- duration
Time needed to pass the unit (temporal extent).
- energy_consumption
Energy consumption of this unit per produced mass.
- iteration_precision
Precision of iteration break in solution loop.
- length
The length of the unit (spacial extent in rolling direction).
- mass_flux
Flux/throughput of mass through this unit.
- max_iteration_count
Count of maximum solution loop iterations before aborting.
- property next_roll_pass
Returns a reference to the first succeeding roll pass of this unit in the sequence. If the parent of this unit is a roll pass, it is considered as the next roll pass.
- Raises:
ValueError – if this unit has no parent unit
- power
Total energy demand per time of this unit.
- property prev_roll_pass
Returns a reference to the first preceding roll pass of this unit in the sequence. If the parent of this unit is a roll pass, it is considered as the next roll pass, so the preceding of this is searched.
- Raises:
ValueError – if this unit has no parent unit
- rotation
Rotation applied to the profile in ° (degree).
- surface_area
Surface area of workpiece within the unit.
- velocity
Mean velocity of material flow.
- volume
Volume of workpiece material within the unit.
- volume_flux
Flux/throughput of volume through this unit.