Interfaces to FEA

SigFit interfaces to the industry leaders in finite element software allowing users complete freedom to simulate mechanical disturbances in software with which they are already familiar.

Finite element analysis: NASTRAN, ANSYS Mechanical APDL , ANSYS Workbench, ABAQUS, and SolidWorks Simulation

Finite element model data (node locations, element connectivity, and coordinate systems) are obtained from finite element model files while analysis results (displacement, temperature, and stresses) are obtained from analysis result files. The files through which SigFit obtains this data is shown in the table below for each finite element analysis software.

Finite Element Software Model File Read By SigFit Results File Read By SigFit
All Nastran Bulk Data File PUNCH File, OP2 File, or OP4 File
ANSYS Mechanical APDL File written by Sigmadyne-supplied macro
ANSYS Workbench
Abaqus Output Database File
SolidWorks Assembly File

The use of SigFit involves defining references between entities defined in SigFit and the finite element analysis. For example, surfaces and lenses defined for analysis in SigFit must be associated with their corresponding nodes and elements in the finite element model. These references allow SigFit to filter and associate finite element analysis results so that analysis in SigFit may be performed. The table below illustrates how these references may be made for each finite element software.

Finite Element Software Allowable FE Model Reference Methods
All Nastran Node ID, Element ID, and Property ID
ANSYS Mechanical APDL Node ID, Element ID, Real Constant ID, and Component Name
ANSYS Workbench Named Selection Name
Abaqus Node Set Name, Element Set Name, Node ID, Element ID, Part Instance Name, and Surface Name
SolidWorks Body Name

InterfacesFEA_Figure1

In addition, disturbance cases considered in the finite element analysis for which analysis in SigFit is desired must be referenced. The table below illustrates how these references may be made for each finite element software.

Finite Element Software Allowable Disturbance Case Reference Methods
All Nastran Subcase ID and Load Step Value
ANSYS Mechanical APDL Load Case ID and Load Step Value
ANSYS Workbench Load Case ID and Load Step Value
Abaqus Step Name and Frame Value
SolidWorks Study Name