Elastic Behavior of Lay-Ups Angles of Laminated Composite Beam with Material Property Grading 
Saeed Asiri
Saeed Asiri, Associate Professor, Department of Mechanical Engineering, College of Engineering, King Abdulaziz University, Saudi Arabia.
Manuscript received on June 30, 2021. | Revised Manuscript received on July 4, 2021. | Manuscript published on July 30, 2021. | PP: 44-51 | Volume-10, Issue-9, July 2021 | Retrieval Number: 100.1/ijitee.I93010710921 | DOI: 10.35940/ijitee.I9301.0710921
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Abstract: The article discusses the study of Vibration Analysis of Generally layered Graphite-Epoxy with lay-up [300 /500 /300 /500 ]. The finite element method is utilized in the study, to analyze the effect of lay-up on the natural frequency and comparing the results with the article[1]. Method: The study is done using Ansys. Graphite-epoxy is considered for the study. The model is prepared from SHELL 281 element which is well-suited for composite shells and sandwiched construction. The accuracy in modeling composite shells is governed by the first-order MindlinReissner shell theory. The element has 8 nodes with 6 degrees of freedom at each node translations in the x, y, and z axes, and rotations about the x, y, and z-axes respectively. Finding: The study concludes that the values of natural frequency decreased when increased the difference between angles of lay-up. Novelty/Applications: Vibration Analysis study has been done in aspects, like sandwiched beam in which different materials are sandhwiched in a layer by layer fashion. Many studies also covers composite material with lay-up in great detail, but there is acute study about the comparision of the different lay-up angles at given boundary condition. These articles cover the same at a greater extent, and conclude that the strength and capacity of composite beams can be enhanced not only by blending composites together, but also giving importance to the arrangement of layers of composite materials.
Keywords: Vibration Analysis, Lay-up, Sandwiched Beam, Finite Element Method.