• FEA in reach
  • |
  • Challenges
  • |
  • Single-Physics
  • |
  • Multiphysics

Stress Distribution of Loudspeaker Suspension Made of Rubber
Under Deformation  [Click to Animate - 0.7MB]

FEA in reach



Concept and product development driven by illustrative and animated physical behaviour has, in recent years, become within reach of many companies.


Partly due to access to affordable computers and partly due to significant improvements of graphic user interfaces of general Finite Element Analysis (FEA) software packages.


Magnetic Flux Density of Neodymium Based Cyclic Periodic Loudspeaker
Motor Magnet Outside Coil  [Click to Animate - 2.1MB]

Challenges


However - FEA is still quite costly considering investments in software licenses.

Furthermore implementation is time consuming for highly paid specialists who can spend up to 2-3 years to get the technology operational.

Despite this, many companies are in need of FEA in order to shorten development time, reduce costs and improve concepts early in the product development phase where the design inexpensively can be changed.


Deformation of Loudspeaker Basket Free-Vibration Mode at 827Hz
[Click to Animate - 2.7MB]

Single-Physics



FEA is widely used, but has mostly been adapted within single-physics applications performing static analysis (for example deformation and stress analysis of steel structures or thermal analysis).


The barrier to do single-physics is manageable and needed modelling skills such as understanding of physics as well as knowledge of material property is low.


Safety Sound Pressure from 7-Speaker Array Fitted On Front of A
Silent Electric Car at 500Hz 40degrees  [Click to Animate - 1.3MB]

Multiphysics


When it comes to dynamic multiphysics analysis and simulations (for example frequency response simulations of vibroacoustic models) the complexity dramatically escalates.

Due to the fact that more physics are in play, material knowledge become critical, computer resources to run simulations increase and signal processing skills are needed to navigate in the large amount of results produced.

Finally, it is a known fact that it is difficult to find specialists spanning more than a single-physics application.