Shock Response of an Antenna Structure Considering Geometric Nonlinearity

Date

2016-01-28

Author

Ozcelik, Yunus Emre
Ciğeroğlu, Ender
Çalışkan, Mehmet

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Antenna structures used in electronic warfare, radar, naval, satellite, spacecraft systems encounter mechanical shock from various sources such as near miss under water explosion, pyrotechnic and ballistic shocks. Since most of the antenna structure has larger dimension in longitudinal direction and experience high frequency, high amplitude shock energy, geometric nonlinearity become crucial to predict dynamic behavior in real life. In this study, the antenna structure is modeled by Euler-Bernoulli beam theory including geometrical nonlinearity. The resulting partial differential equations of motion are converted into a set of nonlinear ordinary differential equations by using Galerkin's Method, which are solved by Newmark. The results for the linear system obtained from time integration and approximate methods such as Absolute Method, Naval Research Method, and Shock Response Spectrum Method (SRS) are compared to the nonlinear ones. Moreover, these results are compared with the ones obtained from commercial Finite Element software.

Subject Keywords

Antenna structure, Mechanical shock, Nonlinear dynamic analysis, Finite element method

URI

https://hdl.handle.net/11511/33245

DOI

https://doi.org/10.1007/978-3-319-29739-2_6

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

Y. E. Ozcelik, E. Ciğeroğlu, and M. Çalışkan, “Shock Response of an Antenna Structure Considering Geometric Nonlinearity,” 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33245.