Modeling Complex Sub-Elements by Using Discrete Damage Modeling

2019 ◽  
Author(s):  
KEVIN H. HOOS ◽  
J. SCOTT MCQUIEN ◽  
HARI K. ADLURU ◽  
JOSEPH D. SCHAEFER ◽  
HAOZHONG GU ◽  
...  
Keyword(s):  
Damage Modeling ◽  
Discrete Damage Modeling

A global-local discrete damage modeling framework for composite laminates

2019 ◽  
Author(s):  
Jeffrey S. McQuien ◽  
Hari K. Adluru ◽  
Endel Iarve ◽  
Alex Harman
Keyword(s):  
Composite Laminates ◽  
Damage Modeling ◽  
Modeling Framework ◽  
Discrete Damage Modeling

Static strength prediction in laminated composites by using discrete damage modeling

2016 ◽  
Vol 51 (10) ◽  
pp. 1473-1492 ◽  
Author(s):  
Kevin Hoos ◽  
Endel V Iarve ◽  
Michael Braginsky ◽  
Eric Zhou ◽  
David H Mollenhauer
Keyword(s):  
Compressive Strength ◽  
Input Data ◽  
Damage Mechanics ◽  
Laminated Composites ◽  
Matrix Cracking ◽  
Damage Modeling ◽  
Fiber Failure ◽  
Failure Patterns ◽  
Open Hole ◽  
Discrete Damage Modeling

Discrete Damage Modeling of complex local failure patterns in laminated composites including matrix cracking, delamination, and fiber failure was performed. Discrete Damage Modeling uses the Regularized eXtended Finite Element Method for the simulation of matrix cracking at initially unknown locations and directions independent of the mesh orientation. Cohesive interface model is used both for Mesh Independent Cracking as well as delamination propagation. The fiber failure mode is modeled by two different methods in tension and compression. Tensile failure is predicted by Critical Failure Volume criterion, which takes into account volumetric scaling of tensile strength. Compression fiber failure is simulated with a single parameter continuum damage mechanics model with non-compressibility condition in the failed region. Ply level characterization input data were used for prediction of notched and unnotched laminate strength. All input data required for model application is directly measured by ASTM tests except tensile fiber scaling parameter and compression fiber failure fracture toughness, which were taken from literature sources. The model contains no internal calibration parameters. Tensile and compressive strength of unnotched and open hole composite laminates IM7/977-3 has been predicted and compared with experimental data. Three different layups, [0/45/90/−45]2S, [30/60/90/−60/−30]2S, and the [60/0/−60]3S, were modeled and tested and showed good agreement with experiment in the case of tensile loading, whereas the compressive strength was generally under predicted for unnotched laminates and overpredicted for open hole laminates.

Modeling Composite Structural Elements Using Discrete Damage Modeling

2020 ◽  
Author(s):  
KEVIN H. HOOS ◽  
HARI K. ADLURU ◽  
ENDEL V. IARVE ◽  
JOSEPH D. SCHAEFER
Keyword(s):  
Structural Elements ◽  
Damage Modeling ◽  
Discrete Damage Modeling

Strength Prediction in Open Hole Composite Laminates by Using Discrete Damage Modeling

AIAA Journal ◽  
2013 ◽  
Vol 51 (4) ◽  
pp. 936-945 ◽  
Author(s):  
Michael J. Swindeman ◽  
Endel V. Iarve ◽  
Robert A. Brockman ◽  
David H. Mollenhauer ◽  
Stephen R. Hallett
Keyword(s):  
Composite Laminates ◽  
Strength Prediction ◽  
Damage Modeling ◽  
Open Hole ◽  
Discrete Damage Modeling
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