Boundary Element Software Technology Corporation

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Technical Support


 

 

 

 

Technical Support
Custom Software
Technical Consulting
Education & Training

In order to offer our customers the highest quality technical support, many support enhancements are scheduled to be implemented. Currently GPBEST technical support is available to commercial customers via email to support@gpbest.com and by telephone at (716) 639-1920 USA.

Key Benefits

Quick response time.
Personal attention.
Knowledgeable staff for all GPBEST questions.

Future Enhancements

Website question and answer archive.
GPBEST user news and update mailing list.
GPBEST specialized solution forums.

Frequently Asked Questions

"What is the difference between Finite Element Method (FEM) and Boundary Element Method (BEM)?"
FEM requires a volume mesh where BEM only requires a surface mesh. It is much more difficult to incorporate gaps and contact analysis involving multiple material properties using FEM than BEM where this type of analysis is inherently better suited. Design changes involving small changes in the geometry are much more easily incorporated in the BEM surface mesh also.
 
"Is the skinned surface mesh from FEM analysis appropriate for BEM analysis?"
Often the skinned surface mesh from FEM analysis is too refined for an efficient BEM analysis. BEM only requires the geometry to be captured correctly in order to model the body accurately. One can then, with the same surface mesh, use either linear or quadratic shape functions for analysis. As a rule of thumb: one quadratic BEM surface element can be used for every four quadratic FEM surface elements.
 
"How do I know that the boundary element solution has converged?"
If the appropriate order shape functions have been used and the geometry has been captured; the convergence is excellent. In other words no further mesh refinement is required. As a subsequent measure of convergence GPBEST calculates a load balance to aid in measuring the level of accuracy.
 
"My FEM and BEM solutions are different; what does this mean?"
Often times users observe much higher stress concentrations in a GPBEST analysis versus a FEM analysis. After closer inspection, often a more refined FEM analysis will begin to approach the GPBEST solution. This is a testament to the unequaled accuracy of the boundary element method. Furthermore, many of our users have actually run experimental testing to prove that GPBEST correctly modeled the stress concentrations.
 

 

 

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