The safety predictions of composite armors require a probabilistic analysis to take into consideration scatters in the material properties and initial velocity. Damage initiation laws are used to account for matrix and fiber failure during high-velocity impact. A three-dimensional (3D) stochastic finite-element analysis of laminated composite plates under impact is performed to determine the probability of failure (Pf). The objective is to achieve the safest design of lightweight composite through the most efficient ply arrangement of S2 glass epoxy. Realistic damage initiation models are implemented. The Pf is obtained through the Gaussian process response surface method (GPRSM). The antisymmetric cross-ply arrangement is found to be the safest based on maximum stress and Yen and Hashin criteria simultaneously. Sensitivity analysis is performed to achieve the target reliability.
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December 2016
Technical Briefs
Probabilistic Finite-Element Analysis of S2-Glass Epoxy Composite Beams for Damage Initiation Due to High-Velocity Impact
Shivdayal Patel,
Shivdayal Patel
1
Department of Applied Mechanics,
e-mail: shiv_dayal_patel@live.com
Indian Institute of Technology Delhi
, New Delhi 110016
, India
e-mail: shiv_dayal_patel@live.com
1Corresponding author.
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Suhail Ahmad,
Suhail Ahmad
Department of Applied Mechanics,
Indian Institute of Technology Delhi
, New Delhi 110016
, India
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Puneet Mahajan
Puneet Mahajan
Department of Applied Mechanics,
Indian Institute of Technology Delhi
, New Delhi 110016
, India
Search for other works by this author on:
Shivdayal Patel
Department of Applied Mechanics,
e-mail: shiv_dayal_patel@live.com
Indian Institute of Technology Delhi
, New Delhi 110016
, India
e-mail: shiv_dayal_patel@live.com
Suhail Ahmad
Department of Applied Mechanics,
Indian Institute of Technology Delhi
, New Delhi 110016
, India
Puneet Mahajan
Department of Applied Mechanics,
Indian Institute of Technology Delhi
, New Delhi 110016
, India
1Corresponding author.
Manuscript received September 30, 2015; final manuscript received May 5, 2016; published online August 19, 2016. Assoc. Editor: Ioannis Kougioumtzoglou.
ASME J. Risk Uncertainty Part B. Dec 2016, 2(4): 044504 (3 pages)
Published Online: August 19, 2016
Article history
Received:
September 30, 2015
Revision Received:
May 5, 2016
Accepted:
May 5, 2016
Citation
Patel, S., Ahmad, S., and Mahajan, P. (August 19, 2016). "Probabilistic Finite-Element Analysis of S2-Glass Epoxy Composite Beams for Damage Initiation Due to High-Velocity Impact." ASME. ASME J. Risk Uncertainty Part B. December 2016; 2(4): 044504. https://doi.org/10.1115/1.4033575
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