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Published in:
2020 | OriginalPaper | Chapter
Dynamic Characteristics of Twisted Composite Panels—A Finite Element Study
Authors : K. S. Shivakumar Aradhya, S. Moorthi
Published in: Advances in Fluid Mechanics and Solid Mechanics
Publisher: Springer Singapore
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Abstract
This paper presents the details of the dynamic analysis of Laminated Composite Twisted Panels. The effects of different parameters such as the angle of twist, lamination angle, aspect ratio (plate width to thickness ratio) on the natural frequencies and mode shapes are considered. The FEM analysis was carried out using the front-end commercial software ANSYS (Ver: 10.0) (ANSYS(R) Help System, 2006 [1]) with its modal analysis capabilities. The Block Lanczos algorithm with subspace iteration technique was used in the extraction of natural frequencies and corresponding mode shapes. The first few natural frequencies and corresponding mode shapes were extracted for different combinations of angles of twist, lamination angles, and aspect ratios. The frequencies extracted are in good agreement with reported analytical solutions (Qatu and Leissa in Int J Mech Sci 33:927–940, 1991 [2]).