Transient Analysis of Rotating Beams with Varying Parameters Simulating the Foreign Object Damages

International Journal of Mechanical Engineering

© 2018 by SSRG - IJME Journal

Volume 5 Issue 1

Year of Publication : 2018

Authors : Rathika, Amaresh Kumar

10.14445/23488360/IJME-V5I1P107

How to Cite?

Rathika, Amaresh Kumar, "Transient Analysis of Rotating Beams with Varying Parameters Simulating the Foreign Object Damages," SSRG International Journal of Mechanical Engineering, vol. 5,  no. 1, pp. 34-44, 2018. Crossref, https://doi.org/10.14445/23488360/IJME-V5I1P107

Abstract:

In the present work, it is proposed to carry out a Transient analysis of rotating beams with varying parameters simulating the foreign object damages using ANSYS. Transient analysis is used to design structures subjected to shock loads, such as automobile doors and bumpers, building frames, and suspension systems. The vibration characteristics of rotating structures such as natural frequencies and mode shapes should be well-identified compared to the vibration characteristics of non-rotating structures. The variation of results from the stretching induced by the centrifugal inertia force due to the blades' rotational motion causes the structure's bending stiffness increment. This results in the variation of natural frequencies and mode shapes. The analysis has been carried out by idealizing the compressor blade as a cantilever beam for the parameters keeping the notch height constant. The notch radius is varied 2 to 6mm in steps of 2mm. It is analyzed for various notch heights of 20mm, 50mm, 80mm, 120mm, and 150mm for the said notch radii. To make sure that a given design can withstand Impact loads at different forcing frequencies.

Keywords:

Transient Analysis, Natural Frequencies, Mode Shapes, Notch Radius, etc.

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