June 24, 2017
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GENOA 4.4 Released
NANO Capability Introduced
New PFA Unit Cell
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Issue #22 - 7/16/2013
Structural Health Monitoring Test Validation
Issue #21 - 1/16/2013
Managing Defects & End of Life Prediction / Validation in Composite Wind Turbine Blades
Issue #20 - 4/13/2010
Material Characterization & Qualification (MCQ)
Issue #19 - 11/17/2009
Composite Structures & Parametric Robust Design (PRD)
Issue #18 - 7/13/2009
Numerical Approach to Determine Crack Path and Delamination Growth in Composite Structures
Issue #17 - 5/4/2009
Certification-by-Analysis (CBA)
Issue #16 - 10/20/2008
Material Qualification and Certification Determine Allowables by Means of Virtual Simulation Combined With Limited Testing
Issue #15 - 6/10/2008
Predicting Post-Buckling Response and Ultimate Failure of Composite 2-Stringer Panels
Issue #14 - 4/28/2008
Composite Storage Module Joint Analysis and Test Verification
Issue #13 - 2/25/2008
GENOA 4.3 Release with A- and B-Basis Allowables
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PFA VCCT
 

PFA - Virtual Crack Closure Technique (PFA_VCCT)

View Product Datasheet (PDF)

Product Highlights:

·         Virtual Crack Closure Technique (VCCT) is a fracture mechanics based approach for the progressive crack growth analysis integrated into GENOA-PFA. The technique 

o        Is based on the linear spring elements

o        Is insensitive to FEM mesh size

o        Avoids the use of "singular" crack elements. As a result, extensive mesh preparation is eliminated

o        Is computationally efficient due to the use of the node-based displacements and forces, which does not affect the problem size

o        Requires a fracture path to be predetermined based on either: 1) experimental testing; 2) a preliminary GENOA/PFA analysis; or 3) the user experience. The predetermined path can be effectively prescribed using the GENOA GUI

o        Can be used for computing strain energy release rate in linear elastic materials

o        Requires fracture toughness data as input. The fracture toughness test data can be obtained from testing, material handbooks, or from GENOA-FTD.

 Applications/Benefits:

·         Efficiently solves crack propagation problems for aerospace, automotive and other structural applications.      

·         Predicts crack propagation mechanisms in composites.

·         Predicts facesheet-core delamination in sandwich materials.  

·         Provides accurate failure analysis of adhesively bonded joints.

·         Detects critical crack propagation and arrest in pipelines.

·         Can be applied to interface failure analysis in MEMS (Micro Electro Mechanical Systems).

 


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