THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF DELAMINATION EFFECTS ON MODAL CHARACTERISTICS OF SYMMETRIC CROSS-PLY COMPOSITE BEAMS

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TORABI KEIVAN; SHARIATINIA MOSTAFA; HEIDARI RARANI MOHAMMAD

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Journal: Journal of Science and Technology of Composites Year:2016 | Volume:3 | Issue:2 Page(s): 177-186

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Title

THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF DELAMINATION EFFECTS ON MODAL CHARACTERISTICS OF SYMMETRIC CROSS-PLY COMPOSITE BEAMS

Author(s)

TORABI KEIVAN | SHARIATINIA MOSTAFA | HEIDARI RARANI MOHAMMAD | Issue Writer Certificate

Keywords

LAMINATED COMPOSITE BEAMQ2

DELAMINATIONQ1

VIBRATION ANALYSISQ2

FINITE ELEMENT METHOD (FEM)Q2

MODAL ANALYSISQ1

Abstract

In this study, the effects of DELAMINATION size and location on vibration characteristics of LAMINATED COMPOSITE BEAMs are investigated via analytical, finite element and experimental methods. In the analytical method, the delaminated beam is divided into four interconnected beams and the interaction of two subbeams at the location of DELAMINATION is simulated by both constrained and free mode models. The effect of bending-extension coupling is taken into account in the analytical formulation. In finite element method, MODAL ANALYSIS is performed on the deLAMINATED COMPOSITE BEAMs with different DELAMINATION sizes and locations and various boundary conditions using commercial finite element software, ABAQUS. Both free and constrained mode models are simulated in the finite element model using suitable interactions, nonlinearities and friction conditions. Analytical and finite element results of both constrained and free mode models are compared for a symmetric cross-ply deLAMINATED COMPOSITE BEAM with various sizes and locations of DELAMINATION. Also, in order to investigate the effects of axial location of relatively small DELAMINATION on the first three natural frequencies, modal tests are done on glass/epoxy composites for various boundary conditions. Results show that analytical, finite element and experimental frequencies have good agreement with each other.

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APA: Copy

TORABI, KEIVAN, SHARIATINIA, MOSTAFA, & HEIDARI RARANI, MOHAMMAD. (2016). THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF DELAMINATION EFFECTS ON MODAL CHARACTERISTICS OF SYMMETRIC CROSS-PLY COMPOSITE BEAMS. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), 3(2), 177-186. SID. https://sid.ir/paper/251729/en

Vancouver: Copy

TORABI KEIVAN, SHARIATINIA MOSTAFA, HEIDARI RARANI MOHAMMAD. THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF DELAMINATION EFFECTS ON MODAL CHARACTERISTICS OF SYMMETRIC CROSS-PLY COMPOSITE BEAMS. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC)[Internet]. 2016;3(2):177-186. Available from: https://sid.ir/paper/251729/en

IEEE: Copy

KEIVAN TORABI, MOSTAFA SHARIATINIA, and MOHAMMAD HEIDARI RARANI, “THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF DELAMINATION EFFECTS ON MODAL CHARACTERISTICS OF SYMMETRIC CROSS-PLY COMPOSITE BEAMS,” JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), vol. 3, no. 2, pp. 177–186, 2016, [Online]. Available: https://sid.ir/paper/251729/en

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