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Title: Quantitative validation of carbon-fiber laminate low velocity impact simulations

Abstract

Simulations of low velocity impact with a flat cylindrical indenter upon a carbon fiber fabric reinforced polymer laminate are rigorously validated. Comparison of the impact energy absorption between the model and experiment is used as the validation metric. Additionally, non-destructive evaluation, including ultrasonic scans and three-dimensional computed tomography, provide qualitative validation of the models. The simulations include delamination, matrix cracks and fiber breaks. An orthotropic damage and failure constitutive model, capable of predicting progressive damage and failure, is developed in conjunction and described. An ensemble of simulations incorporating model parameter uncertainties is used to predict a response distribution which is then compared to experimental output using appropriate statistical methods. Lastly, the model form errors are exposed and corrected for use in an additional blind validation analysis. The result is a quantifiable confidence in material characterization and model physics when simulating low velocity impact in structures of interest.

Authors:
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1236477
Alternate Identifier(s):
OSTI ID: 1396754
Report Number(s):
SAND-2015-3964J; SAND-2015-3367J
Journal ID: ISSN 0263-8223; PII: S0263822315008764
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Composite Structures
Additional Journal Information:
Journal Volume: 135; Journal Issue: C; Journal ID: ISSN 0263-8223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; carbon fiber; delamination; impact behavior; finite element analysis; statistical methods

Citation Formats

English, Shawn A., Briggs, Timothy M., and Nelson, Stacy M. Quantitative validation of carbon-fiber laminate low velocity impact simulations. United States: N. p., 2015. Web. doi:10.1016/j.compstruct.2015.09.033.
English, Shawn A., Briggs, Timothy M., & Nelson, Stacy M. Quantitative validation of carbon-fiber laminate low velocity impact simulations. United States. doi:10.1016/j.compstruct.2015.09.033.
English, Shawn A., Briggs, Timothy M., and Nelson, Stacy M. Sat . "Quantitative validation of carbon-fiber laminate low velocity impact simulations". United States. doi:10.1016/j.compstruct.2015.09.033. https://www.osti.gov/servlets/purl/1236477.
@article{osti_1236477,
title = {Quantitative validation of carbon-fiber laminate low velocity impact simulations},
author = {English, Shawn A. and Briggs, Timothy M. and Nelson, Stacy M.},
abstractNote = {Simulations of low velocity impact with a flat cylindrical indenter upon a carbon fiber fabric reinforced polymer laminate are rigorously validated. Comparison of the impact energy absorption between the model and experiment is used as the validation metric. Additionally, non-destructive evaluation, including ultrasonic scans and three-dimensional computed tomography, provide qualitative validation of the models. The simulations include delamination, matrix cracks and fiber breaks. An orthotropic damage and failure constitutive model, capable of predicting progressive damage and failure, is developed in conjunction and described. An ensemble of simulations incorporating model parameter uncertainties is used to predict a response distribution which is then compared to experimental output using appropriate statistical methods. Lastly, the model form errors are exposed and corrected for use in an additional blind validation analysis. The result is a quantifiable confidence in material characterization and model physics when simulating low velocity impact in structures of interest.},
doi = {10.1016/j.compstruct.2015.09.033},
journal = {Composite Structures},
issn = {0263-8223},
number = C,
volume = 135,
place = {United States},
year = {2015},
month = {9}
}

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