Experimental and finite element numerical studies on the post-buckling behavior of composite stiffened panels

Masood, Nadeem and Kotresh, Gaddikeri M and Viswamurthy, SR (2021) Experimental and finite element numerical studies on the post-buckling behavior of composite stiffened panels. Mechanics of Advanced Materials and Structures, 28 (16). pp. 1677-1690. ISSN 15376494

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Abstract

Aircraft composites structures are typically made using stiffened skin construction as it provides a minimum weight solution to many design problems. However, designers are reluctant to allow composite stiffened structures to operate in the post-buckled load regimes due to their poor inter-laminar properties. The post-buckling response of cocured composite stiffened panels is explored by experiments and numerical simulations. An integrated progressive damage finite element model is presented which captures inter and intra-laminar failures in panels. Detailed analysis of measured experimental structural responses in terms of strain, deformations, the failure mode is carried out and validated from the numerical analysis.

Item Type:	Article
Uncontrolled Keywords:	Cocured stiffened panels, cohesive elements, compression load, damage progression, digital image correlation
Subjects:	CHEMISTRY AND MATERIALS > Composite Materials ENGINEERING > Mechanical Engineering
Depositing User:	Smt Bhagya Rekha KA
Date Deposited:	20 Jul 2022 09:47
Last Modified:	20 Jul 2022 09:47
URI:	http://nal-ir.nal.res.in/id/eprint/13569

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