Electromagnetic Design and Analysis Method Based on Subdivision Iso-Geometric Representation

 

Introduction

 

Computational methods have become a cornerstone in many scientific disciplines, including electromagnetics. CAD/CAM/CAE (CAD) is the leading methodology for engineering design and solving higher order equations for systems of interest.  CAD for electromagnetics primarily focuses on generating 2-dimensional or 3-dimensional representations of curves and surfaces by subdivision and fitting (meshing).  Its goal is to divide the surface into single common units such as triangles and build a physical representation of the object’s surface with this common unit.  A pitfall of this technique though is that it often produces a discontinuous surface lacking continuity in the resulting surface’s 1st derivative.  This discontinuity is problematic and causes errors in analyzing the physics of the surface. 

 

Once the meshing and physical representation is complete, analysis of the physical properties is desirable.  However, much of the physical analysis such as electromagnetic fields or temperature responses is calculated by finite element analysis (FEA).  Currently, it is necessary to convert data between CAD and FEA packages to analyze new designs during development, a difficult task since the computational geometric approach for each is different.  The two most time intensive steps are the development of the geometric representation and the conversion of data between the two computational systems.  For application to electromagnetic computations development is needed to bridge the gap between these two methodologies.

 

Description of Technology

 

This technology is a method for the design and analysis of electromagnetic (and acoustic) devises by means of improving the mathematical representation of the desired surface integrated with the physics on the electromagnetic field interaction of that surface.  This method uses iso-geometric analysis and couples the physical representation of an object to the physics on/within the object seamlessly in one data set.  The analysis renders a smooth surface with continuous 1st and 2nd derivatives. 

 

Benefits

  • Speed—Significantly less time spent developing geometric model (meshing)
  • More accurate—  much smaller error than competing technologies
  • Ease of implementation—software can be incorporated into existing systems

 

Applications

  • Computer aided design for electromagnetic field analysis

 

Patent Status

 

Patent pending and software copyright

 

Licensing Rights Available

 

Full licensing rights available

 

Inventors

 

Shanker Balasubramaniam, Jie Li

 

Tech ID

 

TEC2015-0121

 

Patent Information:

For Information, Contact:

Raymond DeVito
Technology Manager
Michigan State University
devitora@msu.edu
Keywords: