The PyRolL Core Package

PyRolL Core (the pyroll-core package) is basically just a library of data structures and simple iteration logic. The actual physical model logic is, in contrast, provided by plugin packages (see here). User interfaces and similar are, however, provided by distinct extension packages (see here).

The core concepts of data structure are profiles and units. Profiles represent the state of a workpiece somewhere in the rolling process and are basically an infinitive thin slice of the workpiece perpendicular to the rolling direction. Units, however, represent the processing steps applied to the workpiece. They are basically black boxes that transform profiles from one state to another.

How this transformation is done and how the properties of a profile look like is defined by hooks. Hooks are basically placeholders for properties of the respective profiles or units. Famous hooks on profiles are f.e. Profile.temperature and Profile.flow_stress, on units of roll pass type, however, RollPass.roll_force and RollPass.elongation. The value of hook can be either set explicitly to a constant value, or determined by evaluating hook functions defined for the respective hook.

Read into the sections below for detailed information. Make sure you understand the core concepts of PyRolL before reading into the matter of models, plugins and extensions.

• Basic Assumptions and Definitions
• The Concept of Profiles
  • Derived classes
  • Profile Classifiers
• The Concept of Units
  • The Base Unit Class
  • Roll Pass Units
  • Transport Units
  • Pass Sequence Units
  • Rotator Units
  • Disk Elements
• The Plugin System
• Configuration
  • Configuration of the Core Package
  • Creating Configurations for Plugin Packages