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Design and Optimization of Defense Hole System for Hybrid Loaded Laminates
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Author(s): Salih N. Akour (Sultan Qaboos University, Oman), Mohammad Al-Husban (Civil Aviation Regulatory Commission- Jordan, Jordan)and Jamal F. Nayfeh (Prince Mohammad Bin Fahd University, Kingdom of Saudi Arabia)
Copyright: 2012
Pages: 10
Source title:
Technology Engineering and Management in Aviation: Advancements and Discoveries
Source Author(s)/Editor(s): Evon Abu-Taieh (Arab International University, Republic of Syria), Asim El Sheikh (Arab Academy for Banking and Financial Sciences, UAE)and Mostafa Jafari (Research Institute of Forests and Rangelands, Iran)
DOI: 10.4018/978-1-60960-887-3.ch007
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Abstract
Stress concentration associated with circular holes in hybrid loading (i.e., tension-compression ratios of 0.25, 0.50, and 0.75) achieved maximum reduction of 31.7%. This reduction is obtained by introducing elliptical defense holes along the principal stress direction. Finite element analysis is used to optimize the size and location for defense hole system. The effect of the stacking sequence, the fiber orientation, and the stiffness of both the fiber and the matrix are investigated.
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