May 24, 2017
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GENOA 4.4 Released
NANO Capability Introduced
New PFA Unit Cell
New MCO Unit Cell
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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Industrial Verification Examples
 

Industrial Verification Examples of GENOA

The following models and related reports are not available for public use unless requested or approved by Alpha STAR Corporation.

Comparison with Test

Example

Category

Application

Reference

1-1
Stringer-Stiffened Polymer Panel

Buckling and Post Buckling

Simulating the shear buckling and associated post buckling failure behavior of the panel

Dade Huang, Levon Minnetyan “Progressive Fracture of Stitched Stiffened Composite Shear Panels in The Postbuckling Range” Journal of Plastics Publication November 18, 2001.

2-1
PMC Panel under Impact

Impact and Post Impact

Investigating the low velocity impact and post impact behaviors of the PMC panel for Boeing

Frank Abdi, Dade Huang, Mohsen Khatiblou, Chris Chamis. “Impact, and Tension After Impact of Composite Launch Space Structure”. Sampe Conference Paper 2001.

2-2
Low Speed Impact of A PMC Panel

Impact and Post Impact

Simulating the drop test of a PMC panel

1. D. Huang, F. Abdi, M. Khatiblou “Progressive Failure Analysis (PFA) and Verification of Composite Test Panel Under Impact and Compression After Impact (CAI) Loading Using GENOA”. Alpha STAR Technical Report to Boeing 12/14/1999.

2. D. Huang, F. A., M. Khatiblou “Progressive Failure Analysis (PFA) and Verification of Composite Test Panel Under Impact and Tension After Impact (TAI) Loading Using GENOA”. Report Boeing Company 12/14/1999.

Consistent with both the impact and post impact compression test results

2-3
Compression after Impact of A PMC Panel

Impact and Post Impact

Simulating 1) the impact response and 2) the failure process of the subsequent compression with damage inherited from the impact.

1. Dade Huang, Frank Abdi, Mohsen Khatiblou “Progressive Failure Analysis (PFA) and Verification of Composite Test Panel Under Impact and Compression After Impact (CAI) Loading Using GENOA”. Alpha STAR Technical Report to Boeing 12/14/1999.

2. Jay Qian “Progressive Failure Analysis of Composite Test Panel Under Impact and Compression After Impact (CAI) Loading (Impact Was Analyzed Using GENOA’s Progressive Dynamic Failure Analysis Module)”.

3-1
Army PMC Mobile Bridge

Fatigue

Assessing the low cycle fatigue failure of the Army PMC mobile bridge

Frank Abdi, Zhongyan Qian, and Xiaofeng Su, Ramki Iyer, Ayman Mosallam “COMPOSITE ARMY BRIDGE UNDER FATIGUE LOADING”. Sampe 2005 Conference Paper,

Within 1-5% deviation to test

3-2
PMC Panel Fatigue

Fatigue

Evaluating the fatigue and associated probabilistic responses of a PMC panel for ORNL and Delphi

M. Lee, M. Short, Frank Abdi, and J. Qian., “A Math Based Methodology for Longevity Fatigue Prediction of 3D Woven Fiber Glass Reinforced Vynle-ester Composite”. SAE, 2006, Detroit, MI. 06M29-M28 Fatigue.

Consistent with test

3-3
Two Stage Fatigue of PMC Panel

Fatigue

Simulating the effect of loading sequence on the PMC fatigue life for NCC (National Composite Center)

Z. (Jay) Qian, Dade Huang and Frank Abdi, “3D Woven Composite under Two-Stage Fatigue Loading”. Alpha STAR Technical Report to NCC (National Composite Center). February12, 2005.

Test is not available

4-1
Vanes Made of 2-D and 3-D CMCs

Thermal Fatigue/Aging

Evaluating the fiber architecture effect on CMC vane thermal aging failure for NAVAIR CMC engine design

Xiaofeng Su, Jonas Sudenas, and Frank Abdi, “Low Cost Three – Dimensional Reinforced Ceramic Matrix Composites - Report II” Alpha STAR Technical Report of SBIR Phase I to Navair. March, 2005

5-1
Center Cracked PMC Panel

VCCT and DCZM

Simulating the fracture process of a center cracked PMC panel using DCZM

J. Masters, “ Translaminar Fracture Toughness of a Composite Wing Skin Made of Stitched Wrap-Knit Fabric”, NASA Contractor Report 201728, 1997

5-2
PMC Panel with An Inclined Crack

VCCT and DCZM

Simulating the fracture process of a PMC panel with an inclined crack using DCZM

J. Masters, “ Translaminar Fracture Toughness of a Composite Wing Skin Made of Stitched Wrap-Knit Fabric”, NASA Contractor Report 201728, 1997

5-3
Compact Tension PMC Panel

VCCT and DCZM

Simulating the fracture process of a compact tension PMC panel using DCZM

J. Masters, “ Translaminar Fracture Toughness of a Composite Wing Skin Made of Stitched Wrap-Knit Fabric”, NASA Contractor Report 201728, 1997

5-4
3-stringer PMC Panel2

VCCT and DCZM

Deterimining the fracture behavior of a pre-cracked 3-stringer PMC panel using DCZM for Boeing ACT program - conforms to FAA certification requirements

D. Moon, F.Abdi and B. Davis, “Discrete Source Damage Tolerance Evaluation Of S/Rfi Stiffened Panels”, SAMPE 1999, Long Beach, CA.

5-5
Polymer Honeycomb Facesheet Push-off2

VCCT and DCZM

Simulating honeycomb facesheet delamination in a fracture toughness determination push-off test designed by NASA-LaRc using DCZM

Thomas S. Gates, Xiaofeng Su, Frank Abdi, Gregory M. Odegard, and Helen M. Herring, “Facesheet Delamination of Composite Sandwich Materials at Cryogenic Temperatures”. Journal of Composite Science and Technology, 2006

6-1
Polymer Composite Panel

Crack Density and PFA

Simulating micro crack development in composite for NASA cryogenic tank design

Xiaofeng Su, Frank Abdi, J. Andre Lavoie “Prediction of Micro-crack Densities in Cryogenic IM7/977-2 Propellant Tanks”. SDM 45.

6-2
Polymer Composite Tank Dome (Quadrant Model)

Crack Density and PFA

Simulating micro crack development in composite for NASA cryogenic tank design

Xiaofeng Su, Frank Abdi, J. Andre Lavoie “Prediction of Micro-crack Densities in Cryogenic IM7/977-2 Propellant Tanks”. SDM 45.

Test result is not available

7-1
Filament Winding Tank under Pressure2

Probabilistic and PFA

Evaluating the probabilistic response of a filament winding pressured tank

Galib H. Abumeri, B. Golid “Deterministic And Probabilistic Durability Analysis Of High Fidelity Filament Wound Army Bottle Tanks”. Alpha STAR Technical Presentation to Army Arsenal, Huntsville Alabama, 2006.

8-1
CMC Panel under Salt and Moisture Exposure

Environmental Effect and PFA

Evaluating the environmental effect on the CMC stiffness and strength degradations for Navy

Frank Abdi, Galib Abumeri, George Richardson “Thermal Aging and Progressive Failure Analysis of an Oxide/Oxide CMC Coupon Subjected to a Transient Flame Loading”. Sampe 2005 Conference Paper

Consistent with test

9-1
Sandwich Honeycomb T-joint

Honeycomb and PFA

Simulating the failure and load capacity of the X-37 sandwich honeycomb T-joint

“GENOA Progressive Failure Analysis of Advanced Technology Demonstrator (ATD-2) Test Article”.  Chapter 1, and  5 - Contract No: MOD8GXH-863218W

9-2
Wright-Patterson  Honeycomb Fuselodge

Honeycomb and PFA

Predicting the failure process of the Wright-Patterson Honeycomb Fuselodge

1. F. Abdi, T. Castillo, D. Huang V. Chen, A. DelMundo, “Virtual Testing Of The X37 Space Vehicle” SAMPE 2002, Long Beach CA.

2. “GENOA Progressive Failure Analysis of Advanced Technology Demonstrator (ATD-2) Test Article”. Chapter 1, and  5 - Contract No: MOD8GXH-863218W

10-1
F22 Polymer Composite Panel

Static

Capturing edge effect in F22 composite panel under tension

N. J. Pagano, G. A. Schoppner, R. Kim, and F. L. Abrams, “Steady-State Cracking and Edge Effects in Thermo-Mechanical Transverse Cracking of Cross Ply Laminate”. Composite Sciences and Technology, 58(1998)

10-2
Polymer Honeycomb Facesheet Push-off1

Static

Simulating honeycomb facesheet delamination in a fracture toughness determination push-off test designed by NASA-LaRc using damage mechanics method

Thomas S. Gates, Xiaofeng Su, Frank Abdi, Gregory M. Odegard, and Helen M. Herring, “Facesheet Delamination of Composite Sandwich Materials at Cryogenic Temperatures”. Journal of Composite Science and Technology, 2006

10-3
3-stringer PMC Panel1

Static

Deterimining the fracture behavior of a pre-cracked 3-stringer PMC panel for Boeing ACT program

Darwin Moon, Frank Abdi, Bill Davis “Discrete Source Damage Tolerance Evaluation Of S/RFI Stiffened Panels”. Sampe Conference Paper 1999.


10-4
PMC Open Hole Model

Static

Evaluating the failure process of notched composite

Steve Hinrichs, “Stitched Composite Wing Allowable and Miscellaneous Test Coupon Results”, McDonnell Douglas Aerospace Transport Aircraft – West. Report # MDC96K0215

10-5
3-point Bending of RCC Panel

Static

Simulating the RCC panel bending behavior for return to flight shuttle

V. S. Sokolinsky, J. Housner, J. Surdenas and F. Abdi, “Progressive Failure Analysis of Shuttle Reinforced Carbon-Carbon Plate Specimens”, 47 AIAA Paper # 1789, 2006.

Within 4% deviation to test

10-6
PMC Bridge Component

Static

Evaluating the PMC component load capacity for Schuler – Hiem Bridge Long Beach, CA

A. Mossallam, M. Haroun, A. Abdel-Kareem, H. Elsanadedy, M. Elbahar, F. Abdi “Service and Ultimate Behavior of the Schuyler Heim Bridge Hybrid Composite Deck” ICCE Conference Paper July 6, 2002.

Within 1-5% deviation to test


10-7
Navy Composite Joint

Static

Determining strength and failure modes of composite joints to effect improved design for Navy

Cody Godines, Frank Abdi, Steve Kiefer, Keith Kedward “Simplified Analytical Procedure for Prediction of Fracture Damage in Composite Structures”. ASTM Conference Paper 3/17/03.

Within 8% deviation to test

11-1
Filament Winding Tank under Pressure1

Filament Winding and PFA

Evaluating the capacity of a filament winding pressured tank

Galib H. Abumeri, B. Golid “Deterministic And Probabilistic Durability Analysis Of High Fidelity Filament Wound Army Bottle Tanks”. Alpha STAR Technical Presentation to Army Arsenal, Huntsville Alabama, 2006.


Successfully modeled the three composite systems

12-1
Composite Mobile Bridge

Material and PFA

Modeling the various composite systems and simulating their mechanical properties

Ayman Mosallam, Frank Abdi, and Xiaofeng Su, "Virtual Testing And Progressive Failure Analysis Of Army Composite Bridge".  Sampe SAMPE 2004, Long Beach, CA 2004,


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