Correlation Analysis - 8421

Correlation Analysis Software for correlating two modal models, typically consisting of a finite element model and a test model.

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This application allows you to perform a complete visual and numerical comparison of two modal models, typically a test model versus a finite element (FE) model. The complete workflow process is intuitive, yet flexible, and guides you efficiently through geometry alignment, degree of freedom (DOF) mapping, comparison, vector comparison, mode pairing and reporting. In addition, test planning and test validation tools help you design optimal test conditions and evaluate different modelling strategies.

COMPARISON TOOLS

The software helps you to scale and orientate the two geometric models in order to align them for easy comparison. You can animate the various test and FE mode shapes and view mode tables, to clearly compare their modal parameters. Mode pairing is automatically done between the two modal models according to their degree of frequency or shape correlation.

CAPABILITIES

Import test modal models in standard formats
Import FE models such as Nastran^® (MSC, NX, NEi), ANSYS^®, ABAQUS^® or UFF files
Select and validate test nodes from FE models for test planning
Decimate finite element models to create test models
DOF mapping to match the DOFs from the two models being correlated
AutoMAC, CrossMAC, auto-orthogonality and cross-orthogonality tables and 3D plots calculated in reduced test space
Import reduced mass matrix from Nastran or ABAQUS
SEREP algorithm can be used if no reduced mass matrix is available
Expand test modal vectors to FE space using the SEREP algorithm
Integrated Microsoft^® Office reporting capabilities

FINITE ELEMENT INTERFACES

We offer BK Connect Finite Element Interfaces for importing FE models:

BK Connect Nastran Interface Type 8400-D
BK Connect Ansys Interface Type 8400-E
BK Connect Abaqus Interface Type 8400-F

Identifying shortcomings in modal tests and areas of insufficient modelling quality in finite element (FE) models
Applying information that can only be measured or simulated, such as applying measured modal damping to analytical modes and scaling operational mode shapes using the scaling from analytical mode shapes
Defining targets and updating variables for FE model updating
Structural health monitoring (SHM) and damage detection by correlating (operational) modal test results with the analysis results of a reference FE model
Test planning: Decimation of an FE model to a test model for identification of optimal excitation and response locations.
Investigation of frequency range of interest, mode density and critical modes for the modal test
Test validation by comparing test and finite element analysis (FEA) results

File	Description	Type	Languages	Size
BK Connect Correlation Analysis - Datasheet (BP2577)	BK Connect Structural Dynamics:..Correlation Analysis Type 8421, Finite Element Interface Types 8400-D, 8400-E and 8400-F	Technical Document	English	2 MB

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Correlation Analysis - 8421

COMPARISON TOOLS

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FINITE ELEMENT INTERFACES

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