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Verification Benchmarks and Validation of MAT261 for High Energy Dynamic Impact ApplicationsAdvanced computational methods for composite structures can enable smarter testing and potentially certification by analysis. These methods, known as progressive damage and failure analysis (PDFA) methods, can predict lamina level mechanics including failure and subsequent propagation. When introduced into a commercial off the shelf finite element solver such as ABAQUS, LS-DYNA, or ANSYS, it enables end users to effectively exercise PDFA methods; however, it requires an understanding of the assumed mechanics and underlying coded response. In this paper, verification benchmarks developed under the NASA Advanced Composite Consortium for a class of PDFA methods known as continuum damage mechanics approaches are applied to the native LS-DYNA material model MAT261. As a result of the verification, an instability was discovered and subsequently corrected with an engineering solution. The results of the preliminary MAT261 simulations for high energy dynamic impact and the engineering solution are compared and a discussion about the significance is presented.
Document ID
20200002370
Document Type
Conference Paper
External Source(s)
Authors
Molitor, Matthew
(Boeing Research and Technology St. Louis, MO, United States)
Justusson, Brian
(Boeing Research and Technology St. Louis, MO, United States)
Iqbal, Jaffar
(Boeing Company Seattle, WA, United States)
Byar, Alan
(Boeing Company Seattle, WA, United States)
Rassaian, Mostafa
(Boeing Company Seattle, WA, United States)
Date Acquired
April 14, 2020
Publication Date
January 7, 2019
Subject Category
Composite Materials
Report/Patent Number
AIAA 2019-0493
NF1676L-30196
Meeting Information
Meeting: AIAA Scitech 2019 Forum
Location: San Diego, CA
Country: United States
Start Date: January 7, 2019
End Date: January 11, 2019
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
WBS: 826611.04.07.01
CONTRACT_GRANT: NNL09AA00A
CONTRACT_GRANT: 80LARC17C0004
Distribution Limits
Public
Copyright
Public Use Permitted.
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