Mechanical sets and kinematic coupling in Flux Skew

Introduction

Mechanical sets are entities used to implement simulations with Kinematic coupling in Flux projects. In other words, they are used to describe the dynamics of the moving parts of an electromagnetic device.

In Flux Skew, mechanical sets have the additional role of determining which parts of the 2D representation created in the pre-processing stage are subjected to skewing. Moreover, only two types of mechanical sets are available in Flux Skew. These specificities are covered in the following sections of this chapter.

Types of mechanical sets available in Flux Skew

Flux Skew provides the user with the following mechanical set subtypes:
  • Rotation around one axis and
  • Fixed.
Remark that the other types of mechanical set available in Flux 2D are not supported in Flux Skew projects (e.g., Translation along one axis, Compressible and others).

Using a mechanical set to determine the skewed part of a machine in Flux Skew

During the creation of a new application, Flux Skew asks the user to choose the Skewed mechanical set from a drop-down menu. Two options are available, namely:
  • Fixed mechanical set and
  • Rotating mechanical set.
Keep in mind that this choice only assigns the skewing to a specific type of mechanical set: it does not create any mechanical set entities. These must be created manually by the user after the application definition. Moreover, the created mechanical sets must be coherently assigned to the physical regions available in the project. More specifically:
  • If the Skewed mechanical set drop down menu was set to option Fixed mechanical set during the creation of the application, then a mechanical set of type Fixed must be assigned to the face regions representing the stator of the machine (i.e., a machine with a skewed stator is being described).
  • On the other hand, if the Skewed mechanical set drop down menu was set to option Rotating mechanical set during the creation of the application, then a mechanical set of type Rotating around one axis must be assigned to the face regions representing the skewed rotor of the machine (i.e., a machine with a skewed rotor is being described).
A coherency check with respect to the existence of the appropriate mechanical sets is performed by the Check Physics command in Flux Skew. For a comprehensive discussion on the creation of Flux Skew applications, please refer to the topics